Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
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-   -   93' Miata stolen and flipped build thread (https://www.miataturbo.net/build-threads-57/93-miata-stolen-flipped-build-thread-75474/)

hornetball 10-02-2014 09:27 AM

Can you post a recording of it?

revlimiter 10-02-2014 11:11 AM

About a template... I can attempt to measure and draw this up in CAD when I get mine. I'll post the file for everyone to download (if I can indeed draw it up). It would be a HUGE file, dimensionally, and pretty expensive to have plotted out at a retail place like Staples, but at least folks would have measurements.

leboeuf 10-02-2014 11:28 AM

Fedex stores will do 3ft wide plots at something like $0.50 per linear foot + ink.
I use them for my ski templates and it usually ends up being about $6 per print. My templates don't use much ink but I can't see it climbing much higher than $10 if you can keep it under 3ft wide.

Jeffbucc 10-02-2014 05:43 PM

2 Attachment(s)
As long as I simplify the amount of curves I don't see an issue, I went hog wild on the form fitting and made it really complicated, yet really really perfect.

Ignore the shitty plastic welding. It looks messy, but it is solid as a rock. I forgot to take pictures after I used my dremmel to sand down the edges properly. Plus, I heated the plastic just a touch to much hence my gloves leaving indentations in the plastic.

Honestly though? Who cares about the superficiality of the piece, or the "bling" factor of it. It is the most functional you can get with out creating custom mounts for the radiator, which I plan to do. So much unnecessary metal in the radiator/condenser piece that holds the vertical radiator bars to the radiator, I can easily envision a much more simple mounting system for the radiator and ac condenser which alleviates all the air cracks and shapes you have to work around. For those that don't want to spend the time to do it/don't care, I can see your point of view, but after making this piece it is a bitch to seal it 100%.

I'm pretty proud of this rear section and how it bolts & tensions the rear of the cowling to the bottom of the radiator/fans. This is the ONLY place that physically bolts to the car. The bolts tension the intercooler holes so tight I can't even physically move the piece.

https://www.miataturbo.net/attachmen...ine=1412286221

See how I molded the plastic into the vertical radiator support bars? That was a bitch to get right, but it ensures no air flow around the radiator.

I could have done the plastic welding in a much cleaner fashion, but considering this was my "test piece" I did all the plastic welding and forming while it was mounted on the car.

Revlimiter's radiator will get the professional looking piece, since I have exact dimensions to utilize now.

https://www.miataturbo.net/attachmen...ine=1412286221

greeenteeee 10-03-2014 05:26 PM

Finally caught up on this entire build, have been reading it closely and taking notes like everyone else has. I don't think I've ever followed a build thread this closely, esp one that is 150+ pages! Love the meticulous attention to detail and that is an understatement. My gf's Tahoe just got rear ended so she's driving a Jetta. Curiousity got me under the hood and the plastic battery case reminded me of your work with the radiator shroud... except yours looks much more precise in fitment! loll Keep up the good work!

Jeffbucc 10-04-2014 09:26 AM


Originally Posted by greeenteeee (Post 1172753)
Finally caught up on this entire build, have been reading it closely and taking notes like everyone else has. I don't think I've ever followed a build thread this closely, esp one that is 150+ pages! Love the meticulous attention to detail and that is an understatement. My gf's Tahoe just got rear ended so she's driving a Jetta. Curiousity got me under the hood and the plastic battery case reminded me of your work with the radiator shroud... except yours looks much more precise in fitment! loll Keep up the good work!

Glad you enjoyed it. I love it when I come across a good build thread that makes several hours disappear. The thing I hate the most is when you get to the end and there hasn't been an update for several years or they decide to stop building it!
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OK, so Hornet, you requested some logs to help me figure out why my car is sputtering when I hit full boost, and killing my power, so here they are. I can't figure out what the issue is from the data but maybe those smarter than me can pinpoint it. Also posting my current tune in case it is a setting issue.

If anyone doesn't mind taking a look, I'd appreciate it.

I have to wait until next week for my -6an to 5/16 barbed hose fittings to show up before I can install my AFPR. I totally forgot to order some from Bryan at Fab9. :facepalm: Almost tried to use NPT fittings, luckily I didn't thread them and cause damage to the AFPR!

Log 1
Log 2
Log 3
Current Tune

Jeffbucc 10-05-2014 01:40 AM

My brother and I were brainstorming things and I think we've got it pinpointed. What I'm looking at I believe is wastegate flutter/surge. Now that it is staring me in the face I think I know why this might have happened. When I was filing down the wastegate rod, I also enlarged the hole a little to get it down far enough to be able to fit the E-clip properly. What I forgot to do was increase the preload due to losing that little bit of tension.

I love lightbulb moments. Will be testing this tonight.:idea:

This video of an STI is EXACTLY what my car is doing.


18psi 10-05-2014 02:04 AM

I'm not sure what problem you're looking for (maybe I missed it) but that STI vid you've linked demonstrates what a 3port solenoid in interrupt mode will make an external gate do at full boost. it sounds like flutter, but doesn't affect power in any way, just makes the operation of the wastegate a lot more obvious.

Jeffbucc 10-05-2014 02:07 AM

Basically when I hit full boost I get the exact same sound as the STI in the video, and an interruption in power. It isn't a strong interruption in power, just a "wall" that keeps me from holding the boost limit. Only topping out at 270kpa, no spark blowout.

Chiburbian 10-05-2014 02:08 AM

that ducting looks fantastic Jeff. What are your plans in regards to sealing it to the nose of the car?

Jeffbucc 10-05-2014 02:15 AM


Originally Posted by Chiburbian (Post 1173042)
that ducting looks fantastic Jeff. What are your plans in regards to sealing it to the nose of the car?

I'm making a jig right now in the shape of the bumper opening so that I can get a good clean bend in the right shape. It really only needs to be the bottom and the sides that are fitted as the top is sealed with the radiator panel at the top.

Then I'll either plastic weld it or connect it with dzus fasteners so that it will be easy to remove.

Thanks for the compliment, I think it is pretty damn ugly myself, but its functional so I'm making myself be ok with it.

18psi 10-05-2014 02:16 AM

your logs don't show the boost fluctuating though.

also I hate it when people post logs of the weirdest crap and you have to dig through it to find the WOT pull. 2k rpm, start log, WOT, redline, stop log. DONE.
No offense :giggle:

(though yours aren't even that bad, I'm just ranting lol)

Jeffbucc 10-05-2014 02:23 AM

No I totally felt bad posting those long ass logs. I just don't like messing with it while I'm driving so I leave it running.

True, boost fluctuation is pretty tiny, but seriously what else could it be? plugs look fine, if even burning a little hot(white), my injector data is straight from ID's Megasquirt settings.

The only other thing I can consider is somehow my FPR is malfunctioning due to the 255. But then I'd see a really rich/lean spike in the area in full boost.

Jeffbucc 10-05-2014 02:25 AM

One thing, of which I don't know is related or not. But bring up the RPMdot/TPSdot plots, and you'll see a lot of spikes in the same area.

Also, should my fuel pump duty be at 100%?

18psi 10-05-2014 02:32 AM

hmm, I'll look them over again in the morning, but the dot spikes you mention sound a whole lot more like the problem vs boost fluctuation.

Jeffbucc 10-11-2014 04:41 PM

4 Attachment(s)
Installed the Fuelab 515 AFPR from Byran @ Fab9. Quite pretty for a FPR. After I tracked down the correct -6an connections I was able to cobble it together.

The return from my fuel rail goes to the inlet, and the outlet goes to the fuel return hardline. Vacuum is pulled from your OEM line. To dial in your pressure, start your engine, disconnect the vacuum line and plug it(engine will stall). Then adjust your static rail pressure to whatever you'd like(58 psi/4bar for me). Tighten down your locking nut and reconnect your vacuum like.

Then, change all your required settings on your fuel injectors to reflect them now outputting more flow(Flow,deadtime offset @ 13.2V, high & low deadtimes) and start autotuning your VEAL so you aren't running pig rich!

Still working on my VEAL map before I see if it helped my current issue. Don't want to run the risk of being to rich/lean in full boost.

The install was easy, more of a pain to find a spot to put it. I had to remove my oil separator and move it over to the left more, and then bend my clutch hardline a little but it is now out of the way. Looks like it is at a slight angle, but it is just the curve of the panels throwing you off...

The left -6an was replaced with a plug as it wasn't necessary.
https://www.miataturbo.net/attachmen...ine=1413060092

relocated oil separator
https://www.miataturbo.net/attachmen...ine=1413060092

all finished up. I need to use a little touch up paint here and there.

https://www.miataturbo.net/attachmen...ine=1413060092

This should be a fun project for this weekend too. I was going to powdercoat it but I think I'll just hit it with some caliper paint, which is pretty tough stuff.

https://www.miataturbo.net/attachmen...ine=1413060092

Jeffbucc 10-16-2014 12:46 AM

6 Attachment(s)
Finished up my Singular Hood Vents finally. Turned out really good. Didn't have time to pick up some black zinc hardware so the stainless looks a little out of place, but I can ignore it for now.

Carefully cover as much of your car as you can. Especially the engine bay. Tape up your seams! Or, if I had to do it again, remove your hood and do it outside. much easier cleanup.

https://www.miataturbo.net/attachmen...ine=1413434815

Used a christmas tree bit to cut the holes. Cut them as close to the corners as you can. I had to do a lot of sanding which, being aluminum, ate through my barrel sanders like crazy.

https://www.miataturbo.net/attachmen...ine=1413434815

Angle grinder out the straight sections and cut the 2nd/3rd skin 3/4 of an inch farther back than the main hole. Sand until happy with your curve/it fits.

https://www.miataturbo.net/attachmen...ine=1413434815

I used the really nice rubber included in the kits to prevent the paint from chipping.

https://www.miataturbo.net/attachmen...ine=1413434815

Self etching primer
filler primer
Wet sanded
Primer sealant
Semi-gloss black engine enamel

Really nice finish with the semi-gloss.

https://www.miataturbo.net/attachmen...ine=1413434815

Final result. Quite happy with it.

https://www.miataturbo.net/attachmen...ine=1413434815

18psi 10-16-2014 12:53 AM

dat heat extraction doe

Jeffbucc 10-16-2014 12:58 AM


Originally Posted by 18psi (Post 1175826)
dat heat extraction doe

Hopefully it is the last puzzle piece to good temps. I'm sick of tinkering for a while.

18psi 10-16-2014 12:59 AM

this car needs nothing but a solid tune now.

you're done son. don't let anyone tell you otherwise lol

enjoy it.

Jeffbucc 10-16-2014 01:02 AM


Originally Posted by 18psi (Post 1175831)
this car needs nothing but a solid tune now.

you're done son. don't let anyone tell you otherwise lol

enjoy it.

Just gotta convince my brain of that. I have an ATI damper and a 12-1 timing wheel on the way. All I really need after that is an oil cooler and there is really nothing else I can think of to improve track reliability without spending a lot of money.

18psi 10-16-2014 01:03 AM

...I mean might as well order an EFR and coat it in diamonds :dealwithit:

Jeffbucc 10-16-2014 01:09 AM

Tempting...but if I do change turbos it will be a gtx 2867r turbo. It fits my 2860 turbine and is plug and play with my T25 downpipe. Big upgrade in spool without needing new exhaust manifold and downpipe.

Not necessary AT ALL though, so someday.

rleete 10-16-2014 05:49 AM


Originally Posted by 18psi (Post 1175831)
this car needs nothing but a solid tune now.

you're done son. don't let anyone tell you otherwise lol

enjoy it.


Except for adjusting those headlight covers. C'mon, Jeff, we expect more from you.

Monk 10-16-2014 06:36 AM


Originally Posted by Jeffbucc (Post 1175818)
Didn't have time to pick up some black zinc hardware so the stainless looks a little out of place, but I can ignore it for now.

Invasion of the bodysnatchers? There is no way the real Jeff Bucc would say this.

Jeffbucc 10-16-2014 11:07 AM


Originally Posted by Monk (Post 1175857)

Invasion of the bodysnatchers? There is no way the real Jeff Bucc would say this.

The length of time I will deal with it is only until I have time to remedy the situation ;)

EO2K 10-16-2014 12:44 PM


Originally Posted by rleete (Post 1175853)
Except for adjusting those headlight covers. C'mon, Jeff, we expect more from you.

I'm glad I'm not the only one who noticed ;)

turbofan 10-16-2014 12:52 PM

passenger side headlight cover still mismatched. give up.

:giggle:

EO2K 10-16-2014 12:56 PM

I know, right? How can you see anything BUT that now?

18psi 10-16-2014 12:59 PM

time to set the car on fire and start over

turbofan 10-16-2014 01:05 PM

ILY Jeff :party:

Jeffbucc 10-16-2014 02:16 PM

At this point I am going to leave it just to constantly piss you guys off. There has to be something to for you guys to bitch at me for! ;) I thought maybe flaring(correctly) my fenders for future wider wheels/tires, but Ed said he'd slap the stupid out of me if I mauled my car like that...

I must have leaned on one side and the bracket slipped a little. It was straight I promise!


*edit* Ed, I actually had to google what the hell ILY meant...I'm feeling old now.

18psi 10-16-2014 02:33 PM


Originally Posted by Jeffbucc (Post 1176045)
At this point I am going to leave it just to constantly piss you guys off. There has to be something to for you guys to bitch at me for! ;) I thought maybe flaring(correctly) my fenders for future wider wheels/tires, but Ed said he'd slap the stupid out of me if I mauled my car like that...

I must have leaned on one side and the bracket slipped a little. It was straight I promise!
*edit* Ed, I actually had to google what the hell ILY meant...I'm feeling old now.

you realize you're on a miata site right?

Jeffbucc 10-16-2014 02:46 PM


Originally Posted by 18psi (Post 1176052)
you realize you're on a miata site right?

Vlad no past tense because Russia?:facepalm::giggle:

18psi 10-16-2014 02:49 PM

I'll show you tense

Monk 10-16-2014 02:53 PM

1 Attachment(s)
https://www.miataturbo.net/attachmen...ine=1413485597

18psi 10-16-2014 02:55 PM

1 Attachment(s)
https://www.miataturbo.net/attachmen...ine=1413485755

Jeffbucc 10-16-2014 03:09 PM

Maybe we should avoid MRLS discussion right about now based on the direction this is heading. Better not mention the orgy breakfast we 5 MT.net members enjoyed together.

EO2K 10-16-2014 03:11 PM

I like where this is going...

18psi 10-16-2014 03:14 PM

2 Attachment(s)
https://www.miataturbo.net/attachmen...ine=1413486885https://www.miataturbo.net/attachmen...ine=1413486854https://7e8c.https.cdn.softlayer.net...t-what.jpg?209

Jeffbucc 10-16-2014 03:17 PM

*wink wink nudge nudge say no more*

turbofan 10-16-2014 04:28 PM

The lame part is where after that Vlad split and Jeff had to head for the hills.

18psi 10-16-2014 04:29 PM

I know. I didn't even get to finish :cry:

Braineack 10-16-2014 04:46 PM

has OP driven car yet?

18psi 10-16-2014 04:52 PM

nope. but it has driven him

rleete 10-16-2014 04:56 PM


Originally Posted by Jeffbucc (Post 1176045)
At this point I am going to leave it just to constantly piss you guys off.

Don't make me come down there and smudge your window!

EO2K 10-16-2014 04:57 PM


Originally Posted by 18psi (Post 1176125)
nope. but it has driven him

Make no mistake, we drive him now. :party:

FAB 10-16-2014 05:09 PM


Originally Posted by EO2K (Post 1176129)
Make no mistake, we drive him now. :party:

This sounds like we should all chip in for a billboard.. A picture of Jeff with his arms crossed looking swag... MiataTurbo.net Forum posts faded into the background... then across the bottom in bold print - Make no mistake, we drive him now..

Jeffbucc 10-16-2014 05:09 PM


Originally Posted by Braineack (Post 1176123)
has OP driven car yet?

:mad: You know I have!

Jeffbucc 10-16-2014 05:25 PM

1 Attachment(s)

Originally Posted by FAB (Post 1176131)
This sounds like we should all chip in for a billboard.. A picture of Jeff with his arms crossed looking swag... MiataTurbo.net Forum posts faded into the background... then across the bottom in bold print - Make no mistake, we drive him now..

https://www.miataturbo.net/attachmen...ine=1413494725

I do not like the bitch/pimp sound this has to it.

*MT.net has a new young attraction that bends to the suggestions of those he is with. Make it seem worthwhile and watch as he buys all the things*
:vash:

I aint no $2 trick to make you all that dollah dollah bill ya'll! I'm worth at least $50, $100 on a solid nights sleep!

18psi 10-16-2014 06:07 PM

Yeah, BACK OFF!!!


On the weekends I get $300 + tip for him

turbofan 10-16-2014 06:24 PM

Sheesh. All I get is the tip.

Jeffbucc 10-18-2014 10:24 PM

4 Attachment(s)
One day down another to go tomorrow. Way fun day. With only 35 people we all got a lot of runs in. Had trouble in the morning with tires not heating up properly but once I got a good tire pressure at 40 rear 38 front I took 4 seconds off my time and landed at 61.2 for my best.

Best time of the day was the national autocross champion for 2014 in his supercharged Lotus Elise on 275 Hoosiers and 15x10s. He landed I think a 54 for the day. He just had power and grip everywhere and his lines were beautifully perfect. Amazing/inspiring to watch. Gonna try to get a ride along tomorrow.

https://www.miataturbo.net/attachmen...ine=1413685475

https://www.miataturbo.net/attachmen...ine=1413685475

Really fast group, there was an old dude in an NC who was coaching me all day long, he has 5 championships under his belt and drives the hell out of his Semi-stock NC. Beat my time by 1 second. Love the Utah chapter, very focused on helping everyone.

450 WHP STI that was incredible to watch.

https://www.miataturbo.net/attachmen...ine=1413685475

Very properly built Evo X

https://www.miataturbo.net/attachmen...ine=1413685475

And my favorite was a very very powerful BMW with all of it driving the hell out of it.



I'll pull some of my videos later.

Ryan_G 10-18-2014 11:14 PM


Had trouble in the morning with tires not heating up properly but once I got a good tire pressure at 40 rear 38 front I took 4 seconds off my time...
What tires are you running that 38-40psi hot is a good pressure?

Jeffbucc 10-18-2014 11:32 PM


Originally Posted by Ryan_G (Post 1176735)

What tires are you running that 38-40psi hot is a good pressure?

Rivals. And it being cold means they aren't heating up as fast. Crazy how much pressure they like.

18psi 10-18-2014 11:34 PM

that looks like a really really good time/day. nice

turbofan 10-19-2014 03:18 AM

Looks like a blast Jeff. Can't believe how ugly that Lotus is though. Wow.

Fireindc 10-19-2014 05:42 PM

Wow, awesome updates. More recent pics of your car with the new extractors? It looks great.

gooflophaze 10-19-2014 08:36 PM

I was trying to fall asleep last night so I decided to read a build thread in bed - well, we both share the same insomniac tendencies...

Great build - so much of this has inspired me to update my long lapsed build thread, as we've used so much of the same materials/methods independently. I had to build new ducting after getting my AC working, and used the same 1/8th inch ABS - but I had the advantage of shoving mine into a sheet metal stomp sheer and break (works great with 20 seconds of heat gun). Two things I'd throw in - 1/8th inch aluminum stock is great to rivet plastic to if you use the rivet washers, and you can easily add modularity by using rivnuts. My "undertray" comes out with 4 screws for bottom of engine access, and another 4 for intercooler/condenser/radiator to grill mouth.

I see you're plastic welding - a quick shot of some acetone will chemically weld ABS (well, melts it together). I'd use a syringe and shoot it into a crack, hold pressure, and about 15 seconds later it'd be sufficiently strong. It's easy to use too much and have it pool into a pile of runny plastic that'll take a half hour to dry, but you quickly become accustomed to how much to use.

also: ultrasuede is the shit.

Jeffbucc 10-20-2014 10:22 PM


Originally Posted by Fireindc (Post 1176868)
Wow, awesome updates. More recent pics of your car with the new extractors? It looks great.

Thanks! Ill get some more tomorrow, front bumper is off right now working on Revlimiters cowling.


Originally Posted by bittetech (Post 1176896)
well, we both share the same insomniac tendencies...
Two things I'd throw in - 1/8th inch aluminum stock is great to rivet plastic to if you use the rivet washers, and you can easily add modularity by using rivnuts.

I see you're plastic welding - a quick shot of some acetone will chemically weld ABS.

Glad there are more insomniacs out there! Nice to know someone knows the blessing/curse... Thanks for the advice on the plastic welding. I have a metal break, but ended up not using it for the first one. I will on the second.

Here is a quick video of my best 4 runs. I was hitting boost cut(285kpa) suddenly with the cooler air, but it was only near redline in 2nd and was barely noticeable.

It is such a fun course. The end of the long straight in 3rd with the 180 degree corner is FAST, at least in my car it takes a lot of braking to get slowed down enough to not drift it.

I think the last run at around 4:50 is my best, can't be sure. Anyways, enjoy!



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