Thread: ran my turbo'd gtp at cecil dragway....

got 4 runs in. temps were ~60* and dropped to ~50* as the night progressed.

1st run:
i wasnt certain where my boost was set at so i did my first run to see where it was. brake torqued at 2K RPMs and eased into it. noticed as i was getting off the line the tires werent spinning so i gave more and more throttle til it was floored. hit full boost and let it rip. went to pick my time slip:
60' - 2.35
1/8 - 8.66
MPH - 89.08
1/4 - 13.046
MPH - 112.7
i was ONLY boosting ~12-12.5psi

2nd run:
so i realized i'll run again the same way and get on the throttle at the line alot more
60' - 2.25
1/8 - 8.51
MPH - 89.04
1/4 - 12.89
MPH - 112.97

3rd:
i upped the boost a couple turns
got on it hard off the line and then *BOOM* no boost and the car felt like it lost all of its power after the 1/8 mile and i just coasted. took the road going back to the pit and the car was idling rough and then stalled on me. i knew what it was......the rubber adapter between the tb and the LQ4 maff blew off from the tb side and caused alot of unmetered air. rehooked everything back up and lowered the boost lol.
i dont recall the time but i ran a 14.0@86mph

4th and last run:
ran at unknown boost level:
60' - 2.25
1/8 - 8.64
MPH - 87.06
1/4 - 13.13
MPH - 109.9
this was on ~11psi after i looked over my logged scans

btw this is on stock tc , otherwise i'd be able to brake torque up to like 3K RPMs in my 2750 stall and get into boost a whole lot quicker. kinda disappointed but then again i broke into the 12s

well i had a zzp 2750 stall i bought from a member a while ago but it went bad and i had to revert back to a stock tc. i got no power off the line even with full throttle waiting on the turbo to fully spool up lol. as it sits i can only muster ~2.20-2.25 sixties. i am currently running ~14-15psi now and hope to run again later on.

Dude, if your sig is correct you're running a stock L67 with a Turbo Kit, A2A IC with the little supporting stuff and pulling off High 12s on street tires? Looks pretty damn good to me! Get a set of Hoosier QTPs on that thing and i'll bet it'll do mid 12s easy enough. Throw on some rockers and expect a little more. The stall will do wonders too, a 3,000 or 3,500 would do alot for you. I'm impressed.

I wouldn't ***** about trapping 112 mph, i'll tell ya that....

yep, running a stock L67 with the z7 kit. i originally had a vs cammed motor that i thought had a bottomend rod bearing occuring but that was not the case. after sooo many diagnosing and figuring to swap in a new motor the sound was still there and finally, after replacing the zzp 2750 stall to a stock stall the sound was gone! so now i have a working vs cammed motor sitting in my garage lol. i can use that as a backup in case the curernt motor in the car now goes out(hopefully not though for a long long time *knock on wood).

damn, those trap speeds are impressive. Makes me wish I went z7/L67 block combo instead

just got back. had a decent run...only got 2...thats all that i needed
left the front tires as is and lined up.

60' 2.16
330 5.58
1/8 8.298
MPH 90.39
1/4 12.61
MPH 114.6

got back inline and was able to get another run luckily(had alot of break downs when i got there )

increased the brake torque from 1800 to 2200RPMs....slightly increased the boost via MBC a half turn


60' 2.15
330 5.53
1/8 8.21
MPH 91.50
1/4 12.448
MPH 117
2nd run i was getting some knock, at most 2* when it hit 3rd gear. after the run i lowered the MBC a slight bit and added a bit of fuel up top in the 10K-11K by +1%. thats where im gonna leave it an run it for now on. boost is prolly ~15-15.5psi as im only guestimating . btw, my friend who was there said when i let off after the track he saw my car shot a fireball . i'm running open downpipe pointed straight to the ground and running a 70/40 methyl/water mixture.

Little bit of that spent fuel burning

Those 60 fts. are killing ya! Is this on street tires or whats your launching technique? I know its a T67 but there are ways to get better 60fts out of it! Impressive traps!

Originally Posted by FoSHO99

Those 60 fts. are killing ya! Is this on street tires or whats your launching technique? I know its a T67 but there are ways to get better 60fts out of it! Impressive traps!

street tires. i break torque up to 2100-2200RPMs then floor it and get no wheel spin cause of the lack of power while the turbo's spooling....turbo lag for the loss this is a T66.

Originally Posted by fst

street tires. i break torque up to 2100-2200RPMs then floor it and get no wheel spin cause of the lack of power while the turbo's spooling....turbo lag for the loss this is a T66.

lol i see... not too much you can do on street tires and stock stall. But from the times above it looks like you could get some slicks and with a good 60ft. tap into the 11's. Hard to say though with that stock stall...

yea, alot of what if's, but im not gonna run slicks nor drags ever on this car.

nice traps. no wheel spin at all???

i had slight wheel spin off the line but enough for traction. i did had a bit of traction issues when i hit full boost at like 45-50mph lol

damn. breakin loose at 50... that would be cool


it takes that long to hit full boost???

yea. apparently the T66 i bought form the previous seller is the older T66 b4 ZZP switched to the .63 A/R whereas mine is a .82 A/R along with the T03 hotside which is somewhat large as well lol....full optimal boost is said to be at 20psi and im not even there yet lol

yea. hey i hear hot oil helps spool the turbo faster...