JohnKoaWood

Strap on a JATO or two, and watch the fun ensue...



OR

RPHARRIS

Wednesday night, fuel pump or not, we're running. Meth injection isn't sorted out yet so we're going to run c-16 with some serious timing and boost. Any Idea what kind of timing I should aim for with a stock motor, super 61 stg V, and about 18psi of boost? I'm guessing about 16 or 17 degrees?? at about 5500 RPM perhaps more. I'll post a map when I get home!

Let me know If any of you have advice about how to tune for higher octane!

dand86951

Very Carefully. Only way I know is to first have a good knock indicator, and it may be the only one you have is your ear, then take the timing up very little bit at a time at the boost you plan to run, on the gas you plan to run, until you get indication of knock, then dial it back a degree or two. Preferably, you would have it on a dyno so you could measure the increase in torque and hp as you increase timing. If you didn't see any increase in either then you would stop increasing the timing prior to causing any damage.

At 18psi on C16 I would think you could run 20 degrees safely at 5500rpm, probably more, but each engine is different so you need to go up in small increments to keep it safe.

blown 944

Yes I would say you should be able to run over 20 degrees given everything is right Fuel wise.

You can run more on spoolup and taper down.

If you can make a 3rd gear pull log boost knock timing afr we should be able to see.

You could also try to up the timing (and fuel) on a short 3rd pull until knock is present then pull a couple degrees.

porshhhh951

God I need to get wasted spark.

CMF

CMF 3.0L8v
ET12.266@194km/h 2.169 60ft
video: http://www.youtube.com/watch?v=u6LxaAVFuRI

95ONE

Great job! At about regular weight, that puts you right around 400whp.

VERY close to the 11's. It's really a matter of a better launch at that point to hit 11's.

porshhhh951

120mph trap speed is moving. Nice job. Any details on the build? pics?

gt37vgt

is 120mph near the rev limit in third ??
I haven't read the last 10 pages of the thread but it looks like the fastest quarter mile set up for these cars is 951 gearing and perhaps increased redline .. as it seems shorter gearing means an extra shift

porshhhh951

No I think shifting at around 6.8k gets me like 104-105mph in 3rd. 120 is too far of a stretch in that gear. In the 1/4 you are going to have to shift into 4th. No way around that when the traps get up that high.

gt37vgt

earlier in the thread it had said that Ok then it's still not clear what is the best gearing the shorter twin cam ratios would be slightly quicker through third but could be tricky in first and second with wheel spin issues

Olli Snellman

Tere Kert,

Nice job. Is that track in Tallin?

CMF

The track is in Haapsalu, and its very slippery.
btw. Supra time 9,5sec.

333pg333

Have you a list of your cars modifications and weight?
Nice going by the way.

Duke

Well done!
Patrick, CMF posted mod list in he dyno thread.