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T's 94 Track car 300hp? from itb to c30-74
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So my local forum is basically dead and i wanted to continue a build thread somewhere so here it is.
Just a little background on my car. Iv had it since January 09. it lived life as a street car for a few years and in the last couple of years its become a Friday car/track car. Here is how it looked a few months into owning it. https://www.miataturbo.net/attachmen...ine=1455495121 And more current pictures https://www.miataturbo.net/attachmen...ine=1455495121 https://www.miataturbo.net/attachmen...ine=1455495121 |
Needs moar dyno plots
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for posterity.
this was at blacktrax where the car gets tunes. this dyno reads super low. https://www.miataturbo.net/attachmen...ine=1455501894 same setup different dyno 2 months later https://www.miataturbo.net/attachmen...ine=1455501894 Then i added cams https://www.miataturbo.net/attachmen...ine=1455501894 or about 180 on a dynojet |
T, what the heck happened to NCR? I moved and got super busy with house projects and by the time I got working on my track car again the forum was a ghost town. What gives?
Anyway, cool build. I didn't get a chance to say hi at Miatas at Laguna Seca. I'm going to try to get my MS2 in the car soon and get my turbo working properly so I can have fun at the track again. Hope to see you out there. |
Hey Andy!
I think most of the usual posters on NCR moved onto different platforms. id love to jump start it back up but its probably not going to happen. Ill be at laguna so, Stop by and say hi! |
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I haven't seen too many pictures of a Wilwood 1 inch master installed. This is the good-win kit and i wish i did it a long time. One of my favorite recent mods paired with torque rt-700 fluid its almost like im driving an air cooled Porsche
https://www.miataturbo.net/attachmen...ine=1455599262 This kit would be better if it came with a different hose option so you can eliminate the extra fitting and line from the master to the prop valve. |
the start of a stupid idea
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Well im starting a new engine build. clearances will be tight so i needed too see what the valve overlap looked like.
i shortened up a timing belt and adapted a tensioner to the head so i could better watch how the valve move inside the head. https://www.miataturbo.net/attachmen...ine=1456809829 |
Very cool stuff, hope you update with more testing and results.
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What in the hell was going on with the dyno on the MCE rig?
Horsepower swinging back and forth by like 20WHP and AFR swinging back and forth from 12 to 14 above 5500 RPM? Everything looks nice and smooth on the dynapack. |
Originally Posted by Arca_ex
(Post 1312391)
What in the hell was going on with the dyno on the MCE rig?
Horsepower swinging back and forth by like 20WHP and AFR swinging back and forth from 12 to 14 above 5500 RPM? Everything looks nice and smooth on the dynapack. Good question! Shitty o2 feedback. Turned it off and it smoothed out. Haven't run o2 feedback since |
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im probably stupid for this...
All the seats and guides are out of this head. https://www.miataturbo.net/attachmen...ine=1456894986 more on this project maybe by the end of the month Big things happening, possibly never done before to a miata head. |
Never before done, and the seats are out. Looks like my friends head when he was convinced he could fit small block chevy valves in a tiburon head.
I've probably drank beer out of the aluminum made from that thing by now. |
Progress
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Finally got around to cutting up some aluminum. ported roughly around the valve guide first, then put in the new guides and oversized seats.then a little more roughing. I know i am losing out on velocity with the big valves but then again this motor wont live below 4k or even 5k for that matter.
https://www.miataturbo.net/attachmen...ine=1461126675 |
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stuck the approximate sized valves ill be using in the head. these will probably get trimmed down .5mm each or so.
https://www.miataturbo.net/attachmen...ine=1461385677 put the exhaust seats in today also. you can see how much bigger the throats will be. https://www.miataturbo.net/attachmen...ine=1461385677 And finally ran a radiused cutter through the throats https://www.miataturbo.net/attachmen...ine=1461385677 |
What valves did you end up choosing?
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They will be custom ferrea or made from ferrea blanks
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Iv been side tracked and have been working on an itbr setup for my car. not finished yet maybe next weekend ill have it setup and start messing with the tune.
https://www.miataturbo.net/attachmen...ine=1464742308 |
Im curious how the hp curve ends up :)
looks like it will be fun to tune... |
Almost ready for mrls
got my itbs all setup and running. headed to the dyno Tuesday for the disappointment.
https://cimg7.ibsrv.net/gimg/www.mia...ab4d216da1.jpg Also got my car on the scales after removing some "stuff" looks like front to rear ratio is better. This is with a half tank of gas without me. Time to find the last 44 lbs to remove. https://cimg2.ibsrv.net/gimg/www.mia...3f3b3346c1.jpg |
Thanks for the pic of the Wilwood master. My kit from V8R came without any instructions, and even though it seemed pretty self-explanatory, I was scouring the internet for pictures of the lines so I didn't fuck something up. The line exiting from the top of the tee is the one running down to the front left caliper, correct?
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Originally Posted by CalebMars
(Post 1358619)
Thanks for the pic of the Wilwood master. My kit from V8R came without any instructions, and even though it seemed pretty self-explanatory, I was scouring the internet for pictures of the lines so I didn't fuck something up. The line exiting from the top of the tee is the one running down to the front left caliper, correct?
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Im still not finished developing my old motor! I put in a 264 inatake cam and raised the rev limit. This is untuned so i expect a few more once i get it tuned and hopefully i can pull some of the bottom end back up with the cam gears.
https://cimg1.ibsrv.net/gimg/www.mia...481d7a80b4.jpg |
So this is with that crazy radically ported head you were working on?
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No this is on my "old motor" rather normal ported ports and +1mm valves. i simply did a baseline pull then dropped in an intake cam at the dyno and did a pull.
On the subject of my new motor the billet mains should be coming in tomorrow :) |
Stock crank?
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Originally Posted by aidandj
(Post 1396991)
Stock crank?
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its been a while i suppose.
Little run down on things. N/a power is great and im sure i will miss it but everyone around me has stepped it up and i need to keep up somehow. here is was in its last form https://cimg1.ibsrv.net/gimg/www.mia...1b70a5ac44.jpg |
First things first was getting an intake manifold setup.
I had Mike at Chantham build me up a honda ultra manifold with a little extra anngle upwards to match the port runners https://cimg5.ibsrv.net/gimg/www.mia...1349606e0b.jpg While that was happening i strapped the c30-74 rotrex to the side of the engine and built a 3 inch intake for it. https://cimg3.ibsrv.net/gimg/www.mia...a6c7f65331.jpg My intercooler finally showed up after being back ordered for a while. its a Treadstone tr8 https://cimg9.ibsrv.net/gimg/www.mia...cf122527c6.jpg |
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Intake manifold on and it should lead to an interesting cold side charge pipe.
https://cimg5.ibsrv.net/gimg/www.mia...a45cfbee57.jpg Hot side plumbed up with a turbosmart 34mm diverter so i shouldnt see any boost off throttle at high rpm. https://cimg3.ibsrv.net/gimg/www.mia...06a6e6b98b.jpg |
Originally Posted by Twibs415
(Post 1312255)
Well im starting a new engine build. clearances will be tight so i needed too see what the valve overlap looked like.
i shortened up a timing belt and adapted a tensioner to the head so i could better watch how the valve move inside the head. https://www.miataturbo.net/attachmen...ine=1456809829 With your permission, im dying to troll miata club facebook page with this pic. |
Originally Posted by hi_im_sean
(Post 1470521)
With your permission, im dying to troll miata club facebook page with this pic.
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Originally Posted by hi_im_sean
(Post 1470521)
With your permission, im dying to troll miata club facebook page with this pic.
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No way dewd, I have an electric motor on the rear of the exhaust cam hooked up to my megasquirt. Infinitely variable timing.
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I haven't laughed so much in a while. Tarek, I owe you some stickers.
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new c30-74 miata record?
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Time to break down your motor specs sir. Likecat awarded.
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Blowed up the headgasket
I was at Sonoma last week and during my last session I noticed the car tried to spin me out for no apparent reason. So, I slowed down after the carousel and saw my racepak alarm go off as my coolant temps were climbing. Must be a coolant leak I thought. Got to about 215 degrees and shut it down and had the track workers open my hood and look for a leak. They couldn’t seen anything but there was coolant down the side of my car finally got in an my coolant ant resivoir was full to the top. Clearly a lifted head or blown gasket. Replaced the coolant and drove it home no problem. Flash forward pull the head and cleary heat passed the fire ring and got into the coolant jackets. So a new non modified gasket went in with new studs. |
Some new revisions under the hood aswell. New intake setup and good side because everyone complained. Also vented the bpv to atmosphere it didn’t lower intake temps but I’m sure it’s better than pumping hot air into the intake when out of boost https://cimg3.ibsrv.net/gimg/www.mia...98de0dc4c.jpegOld intake https://cimg2.ibsrv.net/gimg/www.mia...1624f2c61.jpegNew intake https://cimg9.ibsrv.net/gimg/www.mia...84d911003.jpeg |
Time for 245 wide tires
Best time to get into a project... 10 days before Laguna Seca.....https://cimg5.ibsrv.net/gimg/www.mia...69088e869.jpeghttps://cimg4.ibsrv.net/gimg/www.mia...62461427a.jpeg https://cimg6.ibsrv.net/gimg/www.mia...a127cc3b2.jpeg |
Looking good, I definitely should have driven your car when I was sitting in it with the keys in...Maybe I can get a ride at Laguna? (It's Alex BTW, you know, the guy who's been texting you nonstop since we met?)
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Laguna was hard on my car. Broke my exhaust from front to back. Also blew 106.x db while it was broken. https://cimg8.ibsrv.net/gimg/www.mia...ff460de33.jpeg https://cimg0.ibsrv.net/gimg/www.mia...90b00788a.jpeg https://cimg7.ibsrv.net/gimg/www.mia...697d42661.jpeg |
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Found it.
Good reads. |
Sorry
Uhmm some things I skipped... lifted the head last season a hand full of times, figured out what Head studs to get.
Went to buttonwillow 2 weeks before super lap battle and was turning a 2 minute lap. Made Some suspension adjustments and went to slb. Took 4th In lrwd with a 1:54. interesting thing on track is we kept dropping tire pressure and adding rear wing. https://cimg4.ibsrv.net/gimg/www.mia...bab1ba056.jpeg With last year behind us I’ll catch up briefly for this year. after slb, found my Supertech intake valves wore out after 6 race hours and some dyno time. So this year, I pulled the head off once again, new custom valve guides. installed b18 ferrea intake valves with a f20 retainers/ keepers and dsm conical springs with a modified Supertech spring seat. Massive amounts of seat pressure now. I also upgraded to a megasqurt ultimate and required the engine bay https://cimg8.ibsrv.net/gimg/www.mia...4addb5080.jpeg |
Did a track day at thunder hill west and broke the exhaust yet again.
https://cimg8.ibsrv.net/gimg/www.mia...400729132.jpeg New design has much more slack and a few more rubber mounts. Ali g with being welded onto the tube part of the muffler. I also made a trade for a c30-94 that will go in the car very soon. Looking to put a restrictor in it to cap the boost. Hopefully I can make more mid range power and cap it at 350hp https://cimg7.ibsrv.net/gimg/www.mia...a23624454.jpeg |
Making parts now
Figured out that once
you more than triple the power things will have issues Especially when you try to put the power down. all the aftermarket ruca have crappy designs one way or another. Sat down with my colleague and designed up a bracket to weld into the ruca to stiffen it up. https://cimg3.ibsrv.net/gimg/www.mia...7e36535e4.jpeg https://cimg1.ibsrv.net/gimg/www.mia...d15569ba4.jpeg https://cimg2.ibsrv.net/gimg/www.mia...7543ceb4a.jpeg https://cimg4.ibsrv.net/gimg/www.mia...776874629.jpeg |
Header
in the never ending quest... header for the c30-94. 1.875 primaries 2.5 merge to 3inch out.
https://cimg3.ibsrv.net/gimg/www.mia...8e7353cee.jpeg https://cimg7.ibsrv.net/gimg/www.mia...08f443dc0.jpeg |
I also sent my intake manifold out to get cnc ported by vpm.
Plan is to drop the compression on my new engine, go to a 30mm exhaust valve and play with cams on the dyno. Looking to slow the motor down to keep it from blowing up again. https://cimg3.ibsrv.net/gimg/www.mia...73f9101e7.jpeg |
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