Timing Problem on 3.6
 

Have a freiend who did a 3.6 conversion. Engine supposedly rebuilt with higher performance cams than stock. His problem is at 4000 RPM the timing is 40 degrees BTDC. Why too advanced. As a result he has knocking problems even with racing gas. He's tried to reposition the distributor one tooth each way. No good. Not really enough room to turn the distributors for this much adjustment. He 's checked the second distributer and at TDC # 1 cylinder both distributor's point to # 1 Cylinder. So now my question. Can the DME chip be bad or advance the timing too much for siome reason? or is this a sympton of the knock sensors being bad? or some other sensor?

Any help appreciated.

I heard you could check the knock sensor by tapping the engine while watching the timing marks at idle to see if it backs up.
Not sure about the 3.6L setup, but I thought some management systems keep advancing the timing untilknock for power and milege. Don`t know. Is the base/idle where it`s supposed to be?

Is he using an aftermarket chip, or an OEM chip? If it's an aftermarket chip, switch back to stock to see what happens. Dan