1/4 mile - stock motor, 223k miles, ebay turbo and ssautochrome - 12.54@117.8mph
#1
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1/4 mile - stock motor, 223k miles, ebay turbo and ssautochrome - 12.54@117.8mph
There were a lot of tuning and driving mistakes made on my part, that's about all I'll say.
I want to stress that the most interesting part is that this is a STOCK motor that has never had the head off or any sort of refurb. The pulley is JB Welded to the crank. It has 223k miles on it. It is daily driven as much as possible.
I'll head off some posts with a quick Q&A:
Q: Dood, why did you run so slow? Like, you should, like, be like running 11's.
A: Poor tuning(too rich, not enough timing up top but mostly poor boost control) and poor driving (not figuring out how to launch on the current setup).
Q: More info on the car. Turbo specs? What color? Are those really camo seat covers?
A: https://www.miataturbo.net/diy-turbo...results-11402/
Q: What did the car run before?
A: https://www.miataturbo.net/dynos-tim...r-again-39626/
https://www.miataturbo.net/dynos-tim...w-10psi-22496/
Q: What does it make on the dyno?
A: It's never been on a dyno.
Q: C'mon, how much does it make at the wheels?
A: You can use a hp calculator. 2500lbs @ 117.83mph, which would have been higher if I wasn't bouncing off the limiter.
Q: Did you zip tie your phone to the steering wheel?
A: Sorta.
Q: This thread is useless w/o media.
A: It's useless all the way around but here it it:
I want to stress that the most interesting part is that this is a STOCK motor that has never had the head off or any sort of refurb. The pulley is JB Welded to the crank. It has 223k miles on it. It is daily driven as much as possible.
I'll head off some posts with a quick Q&A:
Q: Dood, why did you run so slow? Like, you should, like, be like running 11's.
A: Poor tuning(too rich, not enough timing up top but mostly poor boost control) and poor driving (not figuring out how to launch on the current setup).
Q: More info on the car. Turbo specs? What color? Are those really camo seat covers?
A: https://www.miataturbo.net/diy-turbo...results-11402/
Q: What did the car run before?
A: https://www.miataturbo.net/dynos-tim...r-again-39626/
https://www.miataturbo.net/dynos-tim...w-10psi-22496/
Q: What does it make on the dyno?
A: It's never been on a dyno.
Q: C'mon, how much does it make at the wheels?
A: You can use a hp calculator. 2500lbs @ 117.83mph, which would have been higher if I wasn't bouncing off the limiter.
Q: Did you zip tie your phone to the steering wheel?
A: Sorta.
Q: This thread is useless w/o media.
A: It's useless all the way around but here it it:
#5
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Not detonation. The motor would be scattered if it was making those noises under detonation. It was hitting the hard boost cut for a relatively long time.
I don't even know if you could have detonation that sounded like that, especially on E85.
I don't even know if you could have detonation that sounded like that, especially on E85.
#8
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That sound kind of sounds like when mine has spark blowout over 10psi. I've lowered the gap in the plugs and was able to get it to go away, but still the coils wont support any more boost.
Or it could be det. Who knows. New motor going in this winter anyways and will run e85 and lsx coils
Or it could be det. Who knows. New motor going in this winter anyways and will run e85 and lsx coils
#9
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Good observation. It's a 4.10 in back. The problem is that the tires are 205/55-14's. They are less forgiving than the 225/50-15 BFG's that I used a few years back. I hadn't expected to mph that high. I had to raise the rev limiter from 7300 to 7500 for that run.
More good points. I am running a .026" gap on the BKR7's which is probably iffy with a stock 1.6 ignition. Haven't been able to get my ecu to play nicely with the D585 LS2 coils yet.
The Evo E85 guys have issues when they run richer than 11.0, one guy even at 11.5. They call it detonation but I'm thinking it's like you said, blowout. I was approaching 10.0:1 which is unacceptable. I am aiming for 11.7-12.0. I hadn't expected the boost to be that high and hadn't properly tuned in that area, just made it rich and backed down the ignition a lot.
A lot of things may have been happening, I'm planning on addressing all issues before going back to the track.
That sound kind of sounds like when mine has spark blowout over 10psi. I've lowered the gap in the plugs and was able to get it to go away, but still the coils wont support any more boost.
Or it could be det. Who knows. New motor going in this winter anyways and will run e85 and lsx coils
Or it could be det. Who knows. New motor going in this winter anyways and will run e85 and lsx coils
The Evo E85 guys have issues when they run richer than 11.0, one guy even at 11.5. They call it detonation but I'm thinking it's like you said, blowout. I was approaching 10.0:1 which is unacceptable. I am aiming for 11.7-12.0. I hadn't expected the boost to be that high and hadn't properly tuned in that area, just made it rich and backed down the ignition a lot.
A lot of things may have been happening, I'm planning on addressing all issues before going back to the track.
#12
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I've run 7500 since 2006, only turning it down after a bumpy autox where it would spike to 8100. I was definitely not good with that. Turned it down to 7300 and it only spiked to 7800 or so. I forgot to turn it back up because it hasn't been an issue until last night.
The ssautochrome manifold has been very reliable. I have one thin brace on the turbo and one on the WG VTA downpipe. I have no idea why the the villagers are always hunting them down with torches and pitchforks.
#15
Wolf 3dV4. Old Aussie ecu, hasn't ever been supported by the company and there is no community to speak of.
I've run 7500 since 2006, only turning it down after a bumpy autox where it would spike to 8100. I was definitely not good with that. Turned it down to 7300 and it only spiked to 7800 or so. I forgot to turn it back up because it hasn't been an issue until last night.
The ssautochrome manifold has been very reliable. I have one thin brace on the turbo and one on the WG VTA downpipe. I have no idea why the the villagers are always hunting them down with torches and pitchforks.
I've run 7500 since 2006, only turning it down after a bumpy autox where it would spike to 8100. I was definitely not good with that. Turned it down to 7300 and it only spiked to 7800 or so. I forgot to turn it back up because it hasn't been an issue until last night.
The ssautochrome manifold has been very reliable. I have one thin brace on the turbo and one on the WG VTA downpipe. I have no idea why the the villagers are always hunting them down with torches and pitchforks.
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