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roxanne68 roxanne68 is offline
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Join Date: Aug 2005
Location: New Brighton, Minnesota
Posts: 37
Originally Posted by RarlyL8 View Post
Around 26 should be in by 4000rpm.
Sounds like the turbo is OK.
Cruise AFR should be ~14.5; what happens if you drop it to 13.5 AFR?
Which distributor is being used? Is the vac retard line plugged?
My cruise AFR is a little north of that, averaging around 14.8

Dont know the P/N of the distributor but it is a US model, non california unit with the single pot with 2 connections/ports. I have the rear port plumbed into the intercooler, the other front port is open to atmosphere (was plumbed to just below the throttle blade). I unplugged the vacuum signal becuase I was getting to high EGT's with the retared timing (5 ATDC). the port at the throttle is plugged.

What is the best way to lower cruise AFR's? via the WUR or the mixture screw on the metering arm?

'81 Euro SC coupe, 79 3.3 930 engine, 930 transaxle, B&B full dual outlet exhaust, 964 intercooler, 964 cams, CIS injection, K27 7006 turbo. '08 Triumph speedtriple. '06 BMW 330xi
Old 10-30-2011, 01:29 PM
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