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Uh, I run 24.5psi on 9.5:1
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Posted by Jay Hassinger (more from Jay Hassinger) on Thu, 20 Dec 2001 08:12:56 Share Post by Email
In Reply to: As I said 9:1 is too high, I run 8:1,,,, ssabb, Wed, 19 Dec 2001 20:47:31
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409whp@22psi (Havn't dyno'd at 24.5psi), stock cast pistons. It's all about engine managment and an efficient turbo/IC. (I have a large 50 trim T04E compressor wheel in a .50 a/r 3" inlet housing with a 76 trim T31 turbine in a .82 a/r housing with a high density Blackstone 24x8x4 IC core.)

I also use the ERL Aquamist system. Works like a champ.

Granted this isn't a Saab engine (Nissan SR20DE 2.0 4cyl), but the motor itself is stock and never came without a turbo.

The 9.5:1 makes even that big turbo come alive at 3500rpm and is rocking by 4000rpm right to 8000rpm. It also gives great throttle response and off boost power. The car without the turbo put down 150wph and 140wtq.

Compression wasn't the ultimate cause of the detonation. The engine managment and tune was. My Nissan is living proof of that.

I'm not trying to start a fight, just spreading some information.

Pic of the car in question is below.

Jay Hassinger
89 900T 16V (Daily driver. Damn near stock)
97 200sx SE-R (409whp 2400lbs, you do the math)
92 Sentra SE-R (New Road Race project)

posted by 24.18.134...


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