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Sometimes its good to do a sanity check... Im surprized it started that advanced. Detonation is more likely to crack a piston or cylinder than hurt a valve... If you can pull a hill now without something letting go your probably OK. And the GEX goes on.... ;-) Keith Subject: [T3] confessions of a bone-head... every since the day before the Invasion, my car has been running like crap. I did the tune up and changed the pulley fan because i was getting some vibration and i had several fans to choose from. quick change, valves/points/condesor/timing... friday morning lead the pack to Crater Lake and the car is running like crap. Sneezing, popping and major detonation... what the heck? Recheck the timing in a rush, 28 btdc as per usual... still major detonation and have to really lay off the throttle under load to keep it from getting angry. well, tuesday afternoon i had had enough... under, over, around and through the engine bay looking for what is wrong. Then i found it... stupidity on my part... no one else to blame... i am a bone-head... I traded the 3 mark pulley for a 4 mark pulley and my 28btdc timing was actually 42 btdc!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ouch... i am amazed the valve heads are still on the stems! because i just 'swapped' the pulleys i didn't even think to look and i just immediately timed the engine to the left mark of the trio. it took complete darkness and my adjustable timing light to show me the extra mark way over there to the left... doh! moral to the story? SWEAT THE DETAILS! -- Brian Fye 1 Wife, 2...count them, two daughters and 9 VWs! VW----> http://www.geocities.com/menacefye Kaana----> http://www.geocities.com/southumpquateach/ Stormi----> http://www.geocities.com/southumpquateach/stormi.html ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~