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les_garten les_garten is offline
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Join Date: Jun 2003
Location: PSL, FL
Posts: 861
Quote:
Originally Posted by 125shifter View Post
Here's a chart from "Forced Induction Performance Tuning" by A. Graham Bell



98 RON is about what our 93 is.

The chart shows with a 60% efficient intercooler and 9.3 compression you could get away with about 9psi, but I'd knock off another point or two or three since it's an aircooled 2-valve motor. Be sure to data log your lambda numbers as you ease the engine up to speed.
Hi David,
Any idea where the Garrettson IC sits on this graph?

Les
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---Les Garten---85 930, Andial IC, GHL Headers, Fabspeed Dual, K-27 HF2, 3.4 JE Full Finned 7.5:1 CR, 964 CAM'd, Carerra 3.2 Manifold Cut/Flipped, Tec3r, Siemans 55#, GSF Fuel Rails, Clewett Crank Trigger, Clewett Cam Trigger,Dual Plugged, ARP Head Studs/Rod Bolts, Clewett Wires.Tial 46mm WG, Tial 50mm BOV, WEVO Shifter,934 Boost Gauge, Wideband EGO Sensor/Gauge, C2T Head Gaskets, '88 MB 300TE,BMW R100RT
Old 01-14-2008, 05:59 AM
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