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On 5 Jun 99, at 7:54, Eduardo Godoy wrote: > I tow it home, take off the head and lo and behold, the valve had > snapped off and wedged in the cylinder. Was it the #3 exhaust? That is the most common one to go. > Last engine rebuild was five months ago so I'm not looking forward to > this, financially or otherwise. I'm replacing the Mahle P&C's with a > set of Cofap P&C's (cuz that's all they had at the VW shop) these don't > seem to be up the quality of the Mahle set - any comments? Does anyone > just replace one piston at a time provided you balance them all? Gene Berg will sell you just one piston/cyl if you bought the set from him. I would not hesitate to just replace one if I could get them to balance. I even once built an engine with 2 perfectly good pairs of pistons: 1 & 3 balanced and 2 & 4 balanced. It worked fine and ran smoothly. You will find that pistons from different manufacturers will weigh quite differently. Exhaust valves are some of the most critical engine parts. Never skimp on them. I reuse intake valves if the stems and keeper grooves are good, I will grind the valve margin to get good sealing, but I only install new, known quality, exhaust valves. There is junk out there on the market. Be careful what you buy. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ********é× M*************** ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/