[quote=BoatCop;5939536]What engine you have is immaterial. VW Engine timing is set by the distributor. All it does is make sure that spark is delivered at the proper point in the engine compression cycle. Altitude does not effect timing, since it is a mechanical setting.
You should adjust your carb and/or re-jet to compensate for "lighter" air at those altitudes.[/quote
i pulled the main jets, the numbers were not readable, but kinda loked like 115, the hole was bigger than any of the other jets, the bigest i had was 150, i think. i was baffled about that, but have never messe with jets before. the idle jets were the biggest tat came with the carb, but i cant remember what they were off hand. the reason i am wondering about timing is i talked to a local shop, and was told the timing made a big difference with altitude? i am fammiliar with volkswagons, but have never messed with timing or jets much. any help is appreciatd,as i dont want to take it to a shop. if you need more info i will pull my jets and double check. thanks.