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On 10 Nov 2004 at 10:44, Brian Fye wrote: > i wanted to give an update on the 74x90.5 GEX engine i inherited. some > of you know that i tore the entire top end off the engine in Toby's > garage in 2003 and found many items incorrect. cooling wasn't correct > (type 1 under cylinder tins), rockers were mounted incorrectly, Type 1 and type 3 under cylinder tins were the same up thru '70, but this larger engine probably would have been better off with the late "cool tin." Even though all the books stress this, I've never been able to figure out any difference in the way the rockers mount (gaps up/gap down.) I assume they at least had the right end of the rocker stands against the head. ;-) > compression ratio was different on each half of the motor (different > deck heights) and the 041 heads were actually 311 heads that GEX rebuilt > and then stamped 041 over the 311. and the carbs were jetted > incorrectly. this engine was a turnkey from GEX that the PO paid 4k > dollars for. Yeah, sounds pretty junky. > well the engine has a documented 13k miles on it now, and is need of a > complete tear down. the end play is way off, it is leaking oil from > everywhere, fuel comsuption went from 29mpg to 15mpg in the last 2 > months and the engine is running 45F hotter at the heads than it was at > 7k miles... Good that you're doing this now. There are some pretty expensive parts in this engine, and if you rebuild it now you have a pretty good chance of saving some of them. > i say all this to remind everyone of one thing... big glossy ads in > and of themselves do not mean the seller is reputable. Second that! I once had a friend who told me that he just assumed that the quality was inversely proportional to the number of exclamation points. > i will be documenting the tear down to see just what else is wrong wiht > the engine over the winter, so stay tuned... On the edge of our seats.... ;-) -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~