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[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos One more correction RE: C900 compression ratio.... Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Jonathan Scupin [Email] (#428) [Profile/Gallery] (more from Jonathan Scupin) on Wed, 11 Apr 2007 10:03:31 In Reply to: Casualty of a new BB.Yes, my info is from C900, Chaz, Tue, 10 Apr 2007 18:43:04 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

...versus boost.

Lots of folks run the high compression engine (10:1 CR) with stock "full boost" levels (10-12psi), safely controlled by the APC system along with a stock turbo fueling system & ECU.

I'm one of them, Hans and Pete Kelly are too, there are several others out there with this setup.

The high compression ratio just means the engine is going to detonate sooner than a lower compression engine. So while a 9:1CR turbo engine can run 20 psi boost (with proper fueling & timing), a 10:1CR engine will need a lot more than just fueling to get up to those boost levels (but it can be done, search for posts by "ssaaby" on the perf. board!)

Take care,

Jonathan

• Boost on a '96 9000 LPT, Travis, Tue, 10 Apr 2007 13:42:27
  • LPT is base boost only, turrbo , Tue, 10 Apr 2007 13:48:23
    • One more question..., Travis, Tue, 10 Apr 2007 14:25:31
      • The latter, Ari , Tue, 10 Apr 2007 14:42:48
        • LPT cannot tolerate higher boost..., Chaz, Tue, 10 Apr 2007 18:04:30
          • You can use an MBC, Joel F, Wed, 11 Apr 2007 17:14:13
          • That's not true at all for the 9000, Chaz., turrbo , Tue, 10 Apr 2007 18:39:03
            • Casualty of a new BB.Yes, my info is from C900, Chaz, Tue, 10 Apr 2007 18:43:04
              • One more correction RE: C900 compression ratio...., Jonathan Scupin , Wed, 11 Apr 2007 10:03:31 <-- Viewing This Message
          • Excuse me, but...., Bill U, Tue, 10 Apr 2007 18:34:13
            • Bill U and Turrbo are correct and I am not correct..., Chaz, Tue, 10 Apr 2007 18:45:36
              • Thanks for all the help!!!!, Travis, Tue, 10 Apr 2007 21:41:34

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