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Project: Ultimate DIY High MPG Commuter
22 Attachment(s)
This is my build thread that kind of snowballed out of control. My original plan was to just buy this "cheap" 1990 white Miata, fix it up and drive it around for a little while and sell it. The top window was ripped out, and it had a little shake to it at idle, but it ran decent and I figured it might just be injector o-rings or something simple. It was fairly rust free so it didn't seem too bad. The only rust I've found isn't more than surface rust.
https://www.miataturbo.net/attachmen...ine=1408693309 https://www.miataturbo.net/attachmen...ine=1408693309 https://www.miataturbo.net/attachmen...ine=1408693309 So I replaced the top, injector o-rings, got it repainted white. Drove it on multiple trips totaling over 1000+ miles. It was always down on power, but I figured that is just the N/A Miata life yo. I decided to finally compression test it. Turns out it had a cracked exhaust valve on cylinder #3. https://www.miataturbo.net/attachmen...ine=1408693309 repainted and new top: https://www.miataturbo.net/attachmen...ine=1408693309 https://www.miataturbo.net/attachmen...ine=1408693309 https://www.miataturbo.net/attachmen...ine=1408693309 https://www.miataturbo.net/attachmen...ine=1408693309 At this point no one really wants to deal with buying a car like that, and I wasn't having any luck selling it, so I decided to just go all in and fix it. Besides cylinder #3, it had strong compression of 180+ psi per cylinder so I figured the rings were still good. I also figured since the head is coming off, might as well just put a new head on for basically the same cost as getting a new valves etc... One thing led to another and I ended up with a plan of a $1500 budget turbo car (not counting head replacement, etc... TURBO related stuff only.) I think realistically I will come closer to $2000. I am trying to do everything myself and keep it as DIY as possible. Installed brand new head, timing belt, water pump, gaskets, new crankshaft/cam seals, viton CAS o-ring, new alternator, intake manifold gasket, stuff for coolant reroute... I've forgotten a few things but I have receipts of everything in a folder that I will be putting into my excel sheet soon to see if I stuck to the original budget. The ultimate goal for the car is a budget commuter that gets 30+ mpg. Not sure if it's doable, but I am going to try. https://www.miataturbo.net/attachmen...ine=1408693309 https://www.miataturbo.net/attachmen...ine=1408693309 https://www.miataturbo.net/attachmen...ine=1408693309 |
18 Attachment(s)
DIY Manifold:
I used to have an S14 with an sr20, did plenty of turbo swaps with it and knew the places to look for a good t25 sr20. I got a freshly rebuilt one to use. Plans for the manifold are steel head flange with 304L SS runners and turbo flange. ER312 to join the mild steel flange to the 304L elbows, and ER308 for the SS to SS welds. I used a gas lens, as well as back purging the manifold with argon while I welded. I had to get a dual flow regulator so I didn't have to buy another bottle of argon. I made a purging setup on my welding table I made. Here a some pictures. I used the GTAW (TIG) process. https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 https://www.miataturbo.net/attachmen...ine=1408694259 |
Very cool.
Where'd you get your 1.6 head flange? |
I was expecting the first line to go along the lines of, I wanted a miata but I decided the MX3 met my goals much better.
Err, good like with your 30mpg tops commuter car. I'm waiting for concealer to come in here and talk about his 40+mpg 400hp mx6 to make your penis feel small. |
He should be able to get well into the 30's. I just pulled 29mpg in my b6t last weekend....but I has awd, 190k miles and stock(ish) engine management.
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Originally Posted by iantboyd
(Post 1159967)
He should be able to get well into the 30's. I just pulled 29mpg in my b6t last weekend....but I has awd, 190k miles and stock(ish) engine management.
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1 Attachment(s)
Its more of a little black brick but I like the vastly superior comment.
https://www.miataturbo.net/attachmen...ine=1408716890 |
People are claiming good mpg gains with an undertray/ splitter and other aero mods from the DIY aero thread.
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Just spend a few hours on the free way at a steady 55-65mph, getting those AFRs in the mid 16s, and I think really high spark numbers help for MPGs? I think Scott had a ~4x4 table of 38* IIRC. Not sure if that helps.
Just don't forget weight savings, that's also a huge help. Ditching the AC, PS, manifold brace, trimming the alternator bracket, etc. It'll all help. I think higher temps too, so keep the stock 192* thermostat. |
Originally Posted by Leafy
(Post 1159950)
I was expecting the first line to go along the lines of, I wanted a miata but I decided the MX3 met my goals much better.
Err, good like with your 30mpg tops commuter car. I'm waiting for concealer to come in here and talk about his 40+mpg 400hp mx6 to make your penis feel small. What if i told you the built motor 2554 car also hasn't recorded a mixed-driving tank lower than 32mpg since March, and has a record high so far of 35.3mpg tank, all highway? Doesn't beat the MX6, but it's still pretty easy on the wallet. :giggle: |
Originally Posted by concealer404
(Post 1159995)
What if i told you the built motor 2554 car also hasn't recorded a mixed-driving tank lower than 32mpg since March, and has a record high so far of 35.3mpg tank, all highway?
Doesn't beat the MX6, but it's still pretty easy on the wallet. :giggle: |
Originally Posted by curly
(Post 1159994)
Just spend a few hours on the free way at a steady 55-65mph, getting those AFRs in the mid 16s, and I think really high spark numbers help for MPGs? I think Scott had a ~4x4 table of 38* IIRC.
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Thats why the car should be tuned on a load varying dyno. So you can lock the car into each rpm range and keep increasing the spark advance until torque stops increasing.
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Originally Posted by Leafy
(Post 1159996)
Holds the record for a miata swap in a miata. Only one better is that 3 cylinder guy that does 55mph on the highway to get upper 40's. The car is still a brick. I get the same mileage in the city as I do on the highway.
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Originally Posted by Leafy
(Post 1159999)
Thats why the car should be tuned on a load varying dyno. So you can lock the car into each rpm range and keep increasing the spark advance until torque stops increasing.
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Originally Posted by Efini~FC3S
(Post 1160018)
Right...spend $400+ in dyno time to pick up that last 1mpg. That'll pay off quickly.
When i paid $300 for dyno time once the Haltech was installed on the MSM, the car picked up 4mpg overage everywhere vs. the Hydra w/ FM tune. A week later, we took it on an 8,000 mile road trip. Saved $175 in gas. Shit was so cash. |
Originally Posted by Efini~FC3S
(Post 1160018)
Right...spend $400+ in dyno time to pick up that last 1mpg. That'll pay off quickly.
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6 speed + 3.63 gears will help you get better mileage while cruising on the interstate. I hit around 33-34mpg in Hustlers super commuter with cruise control set between 75-90mph.
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15 Attachment(s)
Head flange is a CXracing. I had to widen the holes a bit because fitment wasn't 100% perfect. I also cut between each runner for stress relief, heat expansion, etc...
https://www.miataturbo.net/attachmen...ine=1408744311 My attack plan for 30+ MPG is 440cc Yellow RX-8 Injectors I got a super sweet deal on from a race shop I worked at. I figured I could pick up 1-2 MPG on the design over OEM type. https://www.miataturbo.net/attachmen...ine=1408744311 https://www.miataturbo.net/attachmen...ine=1408744311 I also was originally going to build my MS3x... but then Brain decides to step out of retirement right at the moment I was about to start building... His price is so fair, it's hard to pass that up. Should be getting that back from him completed soon. https://www.miataturbo.net/attachmen...ine=1408744311 Super messy bench with new V-band turbo outlet. http://i12.photobucket.com/albums/a2...ps8001c03c.jpg Opens and closes fully. https://www.miataturbo.net/attachmen...ine=1408744311 https://www.miataturbo.net/attachmen...ine=1408744311 Fitting water/oil lines for the turbo. Going with -3 AN oil feed lines with the proper restrictor for oiling the T25. Doing reroute stuff, pulling engine for 949 Clutch kit install, need to make oil return bung to clear A/C. https://www.miataturbo.net/attachmen...ine=1408744311 https://www.miataturbo.net/attachmen...ine=1408744311 https://www.miataturbo.net/attachmen...ine=1408744311 Installed clutch, and chopped off OEM water neck up front and welded it shut to use in the reroute. https://www.miataturbo.net/attachmen...ine=1408744311 https://www.miataturbo.net/attachmen...ine=1408744311 https://www.miataturbo.net/attachmen...ine=1408744311 https://www.miataturbo.net/attachmen...ine=1408744311 http://i12.photobucket.com/albums/a2...ps47e57756.jpg Attachment 184748 Attachment 184749 Do my water routing lines look good for the reroute? |
Originally Posted by carbon
(Post 1159919)
The ultimate goal for the car is a budget commuter that gets 30+ mpg. Not sure if it's doable, but I am going to try.
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Is it weird that i came here hoping for an electric miata?
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Might wanna consider sequential injection if you really wanna save fuel with those injectors.
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16 Attachment(s)
Welding downpipe and intercooler piping. Using a delta fin ebay intercooler with 2.5" ebay aluminum intercooler piping on both sides. Mounted up intercooler and intercooler pipng.
Also picked up an 04 WRX wagon as my DD that on the street. Mostly stock, but new engine swap, larger intercooler and 3" exhaust all the way out, also came with an new Accesport V2... Thinking about an up-pipe for it so the cat doesn't pop and blow the turbo apart, but I honestly haven't even checked it out if it has an OEM up pipe or not. https://www.miataturbo.net/attachmen...ine=1408749850 https://www.miataturbo.net/attachmen...ine=1408749850 https://www.miataturbo.net/attachmen...ine=1408749850 https://www.miataturbo.net/attachmen...ine=1408749850 https://www.miataturbo.net/attachmen...ine=1408749850 The pie-cuts for the aluminum elbow are actually for the hot pipe side. In a few pictures down you can't see it, but it runs alongside the driver's side inside fender. 100% wheel clearance. It worked out pretty good too because with the ebay universal piping kit, it ended up being the only piece I really needed to cut/weld besides the cold pipe bungs/IAT bung. I know a few of you guys are saying lose weight, lose A/C and PS... but I am trying to model this as if it were an OEM setup, just pretending it's an OEM Turbo Miata with all the amenities that would make for a comfortable drive anywhere around town/highway... Not going for super speed... Yet. I already have a track car that is plenty of fun. https://www.miataturbo.net/attachmen...ine=1408749850 Here is a little more reason as to why I said things spiraled out of control... we've got 3 Miata's now... Whoops. One of the white ones is my roommates and it is turbo. 2 turbo and the blue miata is going to stay N/A. It came with the manual rack and going to keep it that way. It will kind of be my benchmark to test the MPG of the stock N/A vs. Turbo. https://www.miataturbo.net/attachmen...ine=1408749850 https://www.miataturbo.net/attachmen...ine=1408749850 This is basically as it sits now. It might now have a huge impact on the MPG, but I am going to use LS1 coil packs because I've already got spare ones lying around and the whole point of this build I've been telling myself to reuse/re-purpose all the car parts I have collected over the years... The down pipe I was able to fit 3" without cutting firewall or anything, so I am going to go a full 3" exhaust even though that is overkill. I have a 3" cat lying around too... and well, you get the idea of what I do with stuff lying around. Anyone know if the OEM fuel pump will work with what I've got? I've got a Walbro 255, lying around of course, but do I really need to use it?... I kind of figure why not? Just waiting on the MS3x and I should have everything to be able to fire it up with an open down pipe. Needed to do a clutch job in the blue N/A Miata so that has been taking up all of my time lately, but I am just about finished with it so I can get back to work on the turbo Miata. The things I have left to do are:
I've never tuned a car from scratch before, I've only ever had to make small tweaks, and this was on an SR20. Hoping I can find find a good basemap somewhere to start with for my setup... Especially since I will be street tuning without a dyno for awhile. Then finalize with a dyno tune. Want to minimize dyno time if I can. |
Forget the log manifold stuff, more pics of RX7.
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Originally Posted by curly
(Post 1160166)
Might wanna consider sequential injection if you really wanna save fuel with those injectors.
Originally Posted by triple88a
(Post 1160161)
Is it weird that i came here hoping for an electric miata?
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15 Attachment(s)
Originally Posted by Nagase
(Post 1160185)
Forget the log manifold stuff, more pics of RX7.
https://www.miataturbo.net/attachmen...ine=1408752065 Back when it had sort of interior. https://www.miataturbo.net/attachmen...ine=1408752065 https://www.miataturbo.net/attachmen...ine=1408752065 https://www.miataturbo.net/attachmen...ine=1408752065 https://www.miataturbo.net/attachmen...ine=1408752065 https://www.miataturbo.net/attachmen...ine=1408752065 https://www.miataturbo.net/attachmen...ine=1408752065 https://www.miataturbo.net/attachmen...ine=1408752065 https://www.miataturbo.net/attachmen...ine=1408752065 |
Norotors, dissapoint.
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What dash is that?
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Owns a car capable of getting 30+ mpg on the highway that makes v8 noises. Tries to make a hyper miler turbo miata. I think you're doing it wrong.
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Originally Posted by Nagase
(Post 1160191)
Norotors, dissapoint.
Originally Posted by jpreston
(Post 1160209)
What dash is that?
Originally Posted by Leafy
(Post 1160211)
Owns a car capable of getting 30+ mpg on the highway that makes v8 noises. Tries to make a hyper miler turbo miata. I think you're doing it wrong.
I wanted a turbo daily because I missed turbo noises, so I went down the Miata path. Got hooked and bought another one... Then the sweet deal for WRX popped up. So I got a turbo daily now, which makes this white turbo Miata kind of nil for my needs. But I got to finish it because I like a good project and will try and sell afterwards. If not successful in selling, it seems to be a great track car candidate, much cheaper for brakes etc... than the FD. Besides, cruising with the top down in good weather WITH turbo noises is hard to beat. FD for fast times, Miata for great times. :makeout: |
OP delivers.
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10 Attachment(s)
Decided to take a break from the blue Miata and do a little something for the white one.
First, some slightly older pics of hot side piping and the IAT/bung welded onto the cold pipe. https://www.miataturbo.net/attachmen...ine=1408778113 https://www.miataturbo.net/attachmen...ine=1408778113 I used LS1 coil packs with my Haltech E8 on an SR20 about 6 years ago... and made a bracket similar to this to mount them. I figured I would stick to the same rough design since I never had any problems with it in the SR. If only I still remembered what spark plug wires I had gotten... So I fabbed up the LS1 coilpack bracket out of some scrap I had. Spent $8 at TSC to get nylon spacers and a little bit of all thread with some matching nylon lock nuts. https://www.miataturbo.net/attachmen...ine=1408778113 https://www.miataturbo.net/attachmen...ine=1408778113 https://www.miataturbo.net/attachmen...ine=1408778113 https://www.miataturbo.net/attachmen...ine=1408778113 https://www.miataturbo.net/attachmen...ine=1408778113 https://www.miataturbo.net/attachmen...ine=1408778113 On the parts of the all-thread that you can see on the outside of the coilpacks but inside the bracket, I will put 4 pieces of rubber hose that will compress to keep everything tight for final assemble, so don't mind the gap. Rough install. https://www.miataturbo.net/attachmen...ine=1408778113 Here it is painted. I will do the final assembly tomorrow and post pictures of it, then I can figure out/measure for spark plug wires. https://www.miataturbo.net/attachmen...ine=1408778113 |
Why there instead of the traditional over the intake location?
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Originally Posted by triple88a
(Post 1160307)
Why there instead of the traditional over the intake location?
I have been doing some google searches and I can't really find any pics of them over the intake. I see FM has a big spark kit, but it almost looks like it mounts in the OEM location. Searching on the forums too but am failing pretty hard at finding some pics. I can always change the bracket fairly easy if this doesn't work out for some reason. *Edit* Finnally found a pic of over the intake, and those are truck coils which I do not have spares of. Just found this thread https://www.miataturbo.net/engine-pe...70/#post723432 Near the bottom of the page... He said he wishes he would have put them on the front of the valve cover. So I think I will just run with it for now. |
don't listen to the retards OP: LS swap into that rx7 was the coolest thing you coulda done.
rotors are for people that hate properly/consistently running cars. I am in love with your rx7. hnggg |
2 Attachment(s)
Originally Posted by 18psi
(Post 1160326)
don't listen to the retards OP: LS swap into that rx7 was the coolest thing you coulda done.
rotors are for people that hate properly/consistently running cars. I am in love with your rx7. hnggg So until I clear my platter, I am just going to let it be and keep enjoying all the racing events, and get my tinkering "fix" from the Miata's. And here is the completed coil pack mount. Looks like I should be getting the MS3x sometime this week along with new heater hoses. Need to slap in my variable TPS. Things are moving along at a pretty good pace. Expect big progress soon! (hopefully) https://www.miataturbo.net/attachmen...ine=1408857850 |
4 Attachment(s)
Making variable TPS bracket... Still haven't made spark plug wires yet. Tightened up IC piping and got it all ready. Very good clearance everywhere so I am pretty happy with it... although looking at the first pic, it might look like it doesn't have good clearance, but it would hit the wheel well before it touches the IC piping.
https://www.miataturbo.net/attachmen...ine=1409729987 https://www.miataturbo.net/attachmen...ine=1409729987 https://www.miataturbo.net/attachmen...ine=1409729987 https://www.miataturbo.net/attachmen...ine=1409729987 Not exactly sure where to place an air filter for the turbo. The LS1 coilpacks are kind of in the way for up front, and the P/S is in the way too... Need to come up with a solution. Slow steps forward. |
Originally Posted by carbon
(Post 1163420)
Making variable TPS bracket... Still haven't made spark plug wires yet. Tightened up IC piping and got it all ready. Very good clearance everywhere so I am pretty happy with it... although looking at the first pic, it might look like it doesn't have good clearance, but it would hit the wheel well before it touches the IC piping.
Not exactly sure where to place an air filter for the turbo. The LS1 coilpacks are kind of in the way for up front, and the P/S is in the way too... Need to come up with a solution. Slow steps forward. |
2 Attachment(s)
I tried with an aftermarket air filter off a WRX, but it is too large to fit anywhere. I am going to have to get a smaller filter... It MIGHT work behind headlight. If not there, then under the coilpacks/behind rad fans?
Doing some wiring for sequential setup on MS3X, trying to fact check a few things before I complete harness. Stripped LS coilpack harness and hacked up Miata fuel injector harness. https://www.miataturbo.net/attachmen...ine=1409912408 Making 8 pin connector for injector harness to replace the OEM 6 pin connector. #5 is the white/red wire that all the injectors connect to. That is NOT the ground right? And do I have the INJ A,B,C,D setup correctly for sequential on MS3X? Going off of a few things I have read around here, but would rather not have any mistakes. https://www.miataturbo.net/attachmen...ine=1409912408 |
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Went with the above wiring for the pin out of connector. Injectors wired for sequential. Now just need to match up harness side, and then rinse and repeat for setting up ignition.
https://www.miataturbo.net/attachmen...ine=1410162420 |
7 Attachment(s)
Wired my 971-0002 TPS. Waiting on aluminum-nylon 3D printed adapter. Need to confirm the TPS wires are the same.
Does anyone know if the wire colors(Green, Red, Black) match up to the OEM colors? https://www.miataturbo.net/attachmen...ine=1410933795 https://www.miataturbo.net/attachmen...ine=1410933795 https://www.miataturbo.net/attachmen...ine=1410933795 https://www.miataturbo.net/attachmen...ine=1410933795 After playing in the engine bay for close to an hour trying to figure out where to fit the air filter, I finally got to the only spot it would really ever work. It just BARELY clears the hood. Now the question is: To weld or not to weld? I feel like not welding might make it a little easier to take off if I need to get to the belts... but IDK, welding might look cleaner and be more robust. https://www.miataturbo.net/attachmen...ine=1410933795 https://www.miataturbo.net/attachmen...ine=1410933795 https://www.miataturbo.net/attachmen...ine=1410933795 |
Nice build so far. You've got a good collection going.
This site used to have some good TPS info on that model: http://westfieldmx5.devocht.com/mega.../variable-tps/ but I'm getting a 404 no-exist error on it now... I think the wires match up on that model, either that or the red/black are reversed. I used "the kia one" and had to swap the polarity. |
Originally Posted by ahawks9er
(Post 1168027)
Nice build so far. You've got a good collection going.
This site used to have some good TPS info on that model: http://westfieldmx5.devocht.com/mega.../variable-tps/ but I'm getting a 404 no-exist error on it now... I think the wires match up on that model, either that or the red/black are reversed. I used "the kia one" and had to swap the polarity. I'll do a little more research before finishing up engine harness. Got my collection of V-bands today and wideband + bung, so I plan on finish welding the down pipe tonight. I actually have a 2 day autox this weekend so I probably won't get too much done on the Miata as I need to do some stuff to prep the FD. |
26 Attachment(s)
Working on downpipe. Just need to weld in wideband bung and then fully weld everything.
Lots of pie cuts. https://www.miataturbo.net/attachmen...ine=1411505206 Cleaned up 5 of them for use in downpipe. https://www.miataturbo.net/attachmen...ine=1411505206 I already have a hell of a time taking it in and out without the v-band on the bottom... so it may prove extremely difficult to get it in again, maybe even impossible. But fuck it, will figure that out later. Fitment is already nearly perfect in my book. There isn't a whole lot I could do differently anyway because there isn't really even any more room because it's 3" pipe. https://www.miataturbo.net/attachmen...ine=1411505206 https://www.miataturbo.net/attachmen...ine=1411505206 https://www.miataturbo.net/attachmen...ine=1411505206 https://www.miataturbo.net/attachmen...ine=1411505206 Also I here is my nylon/aluminum 3D printed VTPS adapter for my Vishnay. I actually need to widen up the circle to so that the sensor can sit flush inside of it. The STL file was orignally for the BMW TPS, but that is just about the only dimension I didn't verify was the same. O well, should be fairly easy as it's only about 1-2mm that needs to be removed. https://www.miataturbo.net/attachmen...ine=1411505206 https://www.miataturbo.net/attachmen...ine=1411505206 https://www.miataturbo.net/attachmen...ine=1411505206 and unexciting, but necessary small aluminum pipes for air intake/charged pipe bungs for oil evac and wastegate connection. https://www.miataturbo.net/attachmen...ine=1411505206 Also, a little off topic, but had a 2 day autox event this weekend... which led to me finally finding another photo of FD in action after only having 1 for 2 years... haha... THEN, I found some even older ones from a past event. https://www.miataturbo.net/attachmen...ine=1411505206 White turbo NA behind me that is usually one of the fastest guys out there. https://www.miataturbo.net/attachmen...ine=1411505206 https://www.miataturbo.net/attachmen...ine=1411505206 They got some great camera's out there. I don't even think all the photos have been uploaded yet. But that's enough I need to get to welding downpipe. In closing, here was my fastest time of Sunday. |
4 Attachment(s)
Finished welding downpipe. O2 bung will go through my palm.
https://www.miataturbo.net/attachmen...ine=1411511690 https://www.miataturbo.net/attachmen...ine=1411511690 https://www.miataturbo.net/attachmen...ine=1411511690 https://www.miataturbo.net/attachmen...ine=1411511690 |
sugar sugar, sugar sugar, ow ow.
Get some back purge yo. |
It's just carbon steel, not stainless. I don't think I need to back purge. I do have a gas problem though.
My gas bottle is really low, and I think the regulator is leaking, it is always showing a 15 cfm, and the whole tank seemed to drop by about 1/3 overnight and has gotten really low after just a little bit of use. Going to be getting a new bottle tomorrow and take apart the torch and reassemble everything to check for leaks and try and use what I have left to start the post-downpipe exhaust. |
Thats mild steel? It really does look like not back purged stainless, but looking at the super fuzzy interior picture what I thought was sugar on my work monitor just looks like photo fuzz at home.
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Touch it up on the wire wheel and make it look shiny so it can rust underneath the car :D
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4 Attachment(s)
O2 bung welded in.
Yeah I forget if I mentioned it already, but I dropped my phone awhile back and the camera lens has cracks all through it. Honestly I am surprised the photos look as good as they do given how the camera looks... I should be getting a new phone soon, so better pictures incoming! (hopefully) Tried to take another photo of the inside. The sugar could be cutting wheel dust also. Wire wheels and acetoned' and cleaned up and coated so it WON'T rust underneath the car. (hopefully) https://www.miataturbo.net/attachmen...ine=1411524306 https://www.miataturbo.net/attachmen...ine=1411524306 https://www.miataturbo.net/attachmen...ine=1411524306 https://www.miataturbo.net/attachmen...ine=1411524306 |
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i of course think you had mad skills but, those welds...any way you can clean them up? other than that...can't wait for more progress pics. |
4 Attachment(s)
Originally Posted by Alejo_NIN
(Post 1169891)
subbin
i of course think you had mad skills but, those welds...any way you can clean them up? other than that...can't wait for more progress pics. That ugly middle portion I've been trying to hide is actually another very small <5 degree piece I needed to get the angle right. There was a lot of gaps and I am not really good at filling huge gaps with GTAW. But alas, nearly full penetration everywhere so I feel good about it. All of this on top of my gas flow leaking leads to the welds you see before you... I've got excuses for days. Just got my WRX a/c working again, so now I am going to go exchange argon bottles, take Miata off jack stands and roll out of garage. Then clean up the garage so I can get my fab table back to make welds that you fuckers won't complain about :D Forgot to post some pics from finishing working last night. With the help of roomate and a brass hammer, I was able to fit the downpipe back in and got it all bolted up. https://www.miataturbo.net/attachmen...ine=1411577067 https://www.miataturbo.net/attachmen...ine=1411577067 https://www.miataturbo.net/attachmen...ine=1411577067 Also got wideband O2 mounted in there with an adel clamp for the harness. It's about 13" downstream of the exhaust. I know AEM recommends 36" for a turbocharger... but I'm gonna do a 1/3 of that because I don't think it will overheat. If it does, I can always move it. https://www.miataturbo.net/attachmen...ine=1411577067 Off to do errands! |
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Got hardware for VTPS, and also got another argon bottle. I am going to try using my dual flow regulator... but only use one path. Hopefully just my single regulator is leaking, and that the dual solves my gas issue... if that doesn't work, then it is most likely my gas exciter in my machine :( Luckily still got many years of warranty left if that is the problem, just going to suck because won't have GTAW for a little while.
https://www.miataturbo.net/attachmen...ine=1411586066 https://www.miataturbo.net/attachmen...ine=1411586066 https://www.miataturbo.net/attachmen...ine=1411586066 https://www.miataturbo.net/attachmen...ine=1411586066 The TPS shaft did not fit all the way flush with the sensor, so I could deck the mount down to have it fully in there, but it should be fine how it is. Just need to tighten down now and confirm the wiring colors to the harness side. Does anyone know if the red/green/black on this VTPS matches the factory red/green/black? Everyone I asked who has one hasn't gotten back to me. https://www.miataturbo.net/attachmen...ine=1411586066 |
thats so fancy
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Nice work on the adapter. How much did that cost to print in nylon?
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You can get it printed for ~$22 in nylon.
Been awhile since I updated. Been real busy with other things, but managed to get some progress done. I am actually really close to a start up. If I didn't have A/C, I would have put the MS3 here https://www.miataturbo.net/attachmen...ine=1414985446 But, it won't fit with A/C so I had to put it here https://www.miataturbo.net/attachmen...ine=1414985446 https://www.miataturbo.net/attachmen...ine=1414985446 MAP sensor hose and put a DT connector for the sequential inj/ign, wideband, and EBC. https://www.miataturbo.net/attachmen...ine=1414985446 EBC mounted and wired. https://www.miataturbo.net/attachmen...ine=1414985446 https://www.miataturbo.net/attachmen...ine=1414985446 I need to weld on a few bungs and mount the wastegate... And I think that's basically all I need to do besides first start up with MS3. Anyone have a basemap they could send me for RX-8 yellow injectors and sr20 t25? |
First start up. :party:
Sounds like an exhaust leak I need to chase down somewhere. I am going to make an exhaust before I move forward with tuning. This was a major test, because this start-up was representing an entirely new head install/timing belt etc...coolant reroute, along with the turbo setup, injectors, computer, etc... As far as I can tell everything appears OK. Engine was pulling ~20 inHg. Ignition was locked at 10*, but I haven't confirmed with timing light yet. I don't have a tach signal, and I doubt I have all the settings on the MS3 correct. For LS1 coilpacks I selected COP as they are "coil-near-plugs." Still only 3.5ms of dwell even though I can turn that up. Few other sequential related settings I haven't confirmed yet. But I digress, need to plan out exhaust. I want to make a really quiet 3" exhaust, but am having trouble finding a muffler that I think will work. I have a Vibrant 3" Ultra Quiet resonator on my WRX, and it did help quiet it down, but it wasn't anywhere near as much as I had hoped. So I fear a resonator only approach won't cut it for my needs. Ideally, I'd like to really only hear the turbo spooling and barely any engine note, but that is going to take more than just exhaust work. Anyone got any suggestions for a quiet 3" muffler that doesn't choke the hell out of the system? |
I am able to find Magnaflow muffler videos all day, but does anyone have any experience with a Walker Quiet-Flow? http://www.summitracing.com/parts/wlk-21054/overview/
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The walker quiet flows I've heard on miatas were kind of quiet but they also sounded like ass, raspy and farty.
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