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High Knock after install 280º Cams

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Old Apr 7, 2013 | 10:09 AM
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High Knock after install 280º Cams

Hello !!. I have a problem. after install a BC280 camshafts in my car, start to knocking after reaching 4000rpm 10-12 counts. With the previously JUN 264º cams Knock set to 0 generally.

Log with EvoScan:

http://www.2shared.com/file/_d337RE-...25_141233.html

Change the Valve Springs by a BC kit and set the CamGears to 0-0. But the problem still. The Ecu Map is the same with both camshafts.

Try lower the timing but nothing!!

Where can be the problem? Coils, Phantom Knock, Maybe the Cams¿?
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Old Apr 9, 2013 | 07:30 PM
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From: Marietta GA
Originally Posted by JSPturbo
Hello !!. I have a problem. after install a BC280 camshafts in my car, start to knocking after reaching 4000rpm 10-12 counts. With the previously JUN 264º cams Knock set to 0 generally.

Log with EvoScan:

http://www.2shared.com/file/_d337RE-...25_141233.html

Change the Valve Springs by a BC kit and set the CamGears to 0-0. But the problem still. The Ecu Map is the same with both camshafts.

Try lower the timing but nothing!!

Where can be the problem? Coils, Phantom Knock, Maybe the Cams¿?
Those cams should breathe better than the previous 264 cams. So at higher rpm more air with still the same fuel means you need to re-tune it for the cams.

Get the car re-tuned or log it with a wideband and fix the fuel maps yourself
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