jid2

iTrader: (62)

Or have someone check the runout of the lobes and see if they are straight like Brian was talking about.

donour

iTrader: (6)

I'm not sure if it is worth it. I'm not quite to the point where I want to pull them out, but if I do and find that the stock cams eliminate the problem then the cause because purely academic.

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donour

iTrader: (6)

Update:

The Accel Enrichment vs. Temp table doesn't affect the knocksum.

I finally bit the bullet and played with the knock control tables. I raised the low multiplies by 3 (to 16) and the mid by 2 (to 20). I then raised the load value to 120 @ 2500 and 95 @ 3000,3500.

That caused basically all of the free-revving knock counts and the persistent ones that I get under light throttle to go away. Maybe it _is_ just valve train or drivetrain noise. *shrug* I do have aftermarket motor mounts.

Did I just set myself up for catastrophe? Will those small changes have a big effect once I load the car up on track? In those load cells I'm running the stock timing values on E85, although I'd like to run some 91 occasionally too...

d

donour

iTrader: (6)

update:

I drove around today while listening with detonation cans . I didn't hear any knock, just a rhythmic combustion sound and a little bit of valve train noise in the background.

I'm curious what folks think about my change to knock sensor tables...

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Evoryder

iTrader: (55)

I upped mine awhile ago. Phantom knock is a pain...big cams, stiff mounts...etc = knock