who's got the most psi
Originally posted by bkapold@aol.com
In2Twins:
ChrisSpeeds car is the **** in my opinion....What an amazing time for a stock chassis RX-7, but then he's running alcohol....Big difference too...
In2Twins:
ChrisSpeeds car is the **** in my opinion....What an amazing time for a stock chassis RX-7, but then he's running alcohol....Big difference too...

crispeed
87 RX-7 TII
9.204@150.47mph
2600lbs
un-tubbed
Originally posted by ErnieT
I've ran 28lbs of boost. I know Demetrios and Ray Wilson have run over 30psi. Hell, if you add the stress of N2o, its safe to say racers of pushed upwards of 40psi. Its all about winning.
I've ran 28lbs of boost. I know Demetrios and Ray Wilson have run over 30psi. Hell, if you add the stress of N2o, its safe to say racers of pushed upwards of 40psi. Its all about winning.
High boost is a lot less stress than with low boost and nos.crispeed
87 RX-7 TII
9.204@150.47mph
2600lbs
un-tubbed
Full Member
Joined: Jan 2003
Posts: 108
Likes: 0
From: Houston, Texas,USA
i run 20psi on pump gas. i have gone over as much as 1.6 bar on pump because of weird boost creep that just randomly occurs... not that my motor is actually liking that kidna boost especially with a 2 bar map sensor(oops!)... i guess my timing must be way back or i am one lucky mf'er.
Crispeed: Don't ask why but I thought you ran alcohol.....Now I'm even more impressed 
As I've said before, as long as your timing is dialed in 20psi isn't hard to get out of a rotary...Thats one of the main ingredients
Brad

As I've said before, as long as your timing is dialed in 20psi isn't hard to get out of a rotary...Thats one of the main ingredients
Brad
Senior Member
Joined: Dec 2002
Posts: 639
Likes: 0
From: cali
Come to think of it, I've run 26psi on my TO4. This was not intentional(setting up my boost controller), and it was on 103 octane with very conservative timing, and af ratios around 10:1. I've run 23 psi autocrossing several times with no problems. Ignition is 3-msd6a, NGK race plugs,stock FC coils. Carl Byck
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