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OK, a few more observations.... I pulled both the #1 and #2 exhaust valves from the head. It is clear that the three angle cut is ok on #1 and the valve is kissing off in the proper spot on jsut the outside diamter of the 45 degree valve face. However, it looks like #2 has pounded itself into the seat so it is trying to kiss-off along the whole 45 degree surface of the valve. Might even only be trying to kiss off in the inner diameter of the 45 degree face. There is no evidence that the seat itself is receeding into the head. Just the valve into the seat. I compared the lengths of the two valves and there is no observable difference in their lengths. I know something is changing because I set the valves in Parma before the trip home. Set them again at Russ's place in Des Moines (#2 was tight), set them again at my folks place in MN (#2 was again tight) and then set them again this weekend (#2 was tight again). I figure I lost 0.020 or so since installing the motor. Plus the adjustment screw for #2 exhaust is just about all the way out. One other observation. #2 exhaust valve guide is looser that #1. All the guides were new and tight 7,000 miles ago when I rebuilt the engine. Any possible connection? As for #2 running colder. The only thing I know for sure is that it had the largest combustion chamber by 0.8 cc's so it is slightly lower compression that the other cylinders. Beyond that I don't know why it would runner colder than #1. Thanks for the advice so far. I will probably take the stock springs from the original 1600 single port and install them in place of the hi-rev single springs. It will give me an excuse to do the autopsy on Sophy's original engine. I will also lap the cylinders on a glass plate and then lap them into the heads. Whatever I do I need to have her back together by Tuesday morning to go to work and get the kids from school. Fun, Fun, Fun....... Later, John Jaranson '71 FI AT Fasty (Jane) '66 Square (Sophy) About Half a Late Square (Organ Donor) http://mywebpages.comcast.net/jaransonT3/jaransonT3/ (This is my new website address) ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/