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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
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Originally Posted by jonesb930 View Post
Ok, the top line is a code that tells you:

32 = 32/10 inch = 81mm diameter
70G = inlet diameter/wheel diameter =70% (largest trim)
the other letter codes are internal designators mainly describing the base castings
Bottom line is based on available web information this looks like THE largest factory K27 compressor (for the timeframe). Thats good.

back to the code:
the 11 is convention for turbine area in cm2 and 11 is typical of 930 turbo configurations.

It probably is the same as, or very similar to a -7006.

500-550HP? Your best bet is a modern turbo with larger compressor and high efficiency turbine stage, plus serious intercooling. On this engine it will be easier to accomplish if you resist the urge to increase fixed compression over 7.5:1.

As a trend, budget turners will make more HP for less by keeping the C.R. low, stock 7:1 is best. Increased C.R. may be desirable for off boost response but it demands costly hardware when the goal is serious high HP.

Last edited by copbait73; 01-12-2010 at 07:36 AM..
Old 01-12-2010, 06:01 AM
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