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On 8 Oct 2001, at 9:34, Mike Wodkowski wrote: > Thanks for the info. I'm going to check my valves next weekend. Hows the > jusr feel about the .008 setting? The original spec on these was .004, but around 1970 VW started to have valve problems and changed the spec to .006. The problems were all exhaust valve problems as the intake valves run MUCH cooler, but I suspect that they thought that it was easier to just bump up both specs for the sake of simplicity. Someone pointed this all out to me years ago and since then I have just followed their advice and adjusted the valves to .004 for the intakes and .006 for the exhausts. This gives max intake performance along with good cooling for the exhausts, and has worked well for me and all the cars I've worked on for the past 20 years. Going to even larger clearances certainly does assure that the valves seat and cool well, but the extra slack in the valve train will lead to extra valve train wear as the slack all gets taken up later in the ramp of the cam. We hear this as valve noise. Later in the ramp means that the shock and wear to the parts is increased, and I would worry that this might be counterproductive. The think to keep in mind is that the valve lash is not static. It changes as the engine warms up. What we are attempting to do is to make an adjustment with the engine cold that will give the valve a slight bit of clearance when it is at operating temp. This is why any engine with solid lifters, like ours, will make a bit of valve noise while cold, but this should go away as the engine warms up. I do not recommend going to larger clearances. - Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org