Hey all, new to the group. Neighbor wants to adjust timing on cam and belt on my 940 turbo 1993. he's asked me to look up the actual mark settings on the net and can't find them. anyone have an answer for me? He knows HOW but doesn't know what to set at. Do I need to buy a timing light or can i weasel my way into not buying one, and getting the engine to strengthen?
Err there are no adjustments, if you want to know there the reference marks are and how to put the belt on correctly you need to BTFM. IT only goes on one way, if its not lined up correctly it is wrong and the engine will run baldly or self distruct.
There are also no other adjustments on the engine (that need to be done as part of service). Sounds more like you want to check ignition timing (nothing to do with the cam), again this is not necessary on the engine and is not adjustable.
If you are applying aftermarket adjustment methods / parts you definately should have a manual to start with.
Changing the timing belt is a detailed procedure but doable with basic tools, again you need the manual otherwise if you start the engine up to use this imaginary timing light the engine will self distruct.
There are marks on the plastic housing for the cam and intermediate shaft and big washer like thing on the crank gear. You line up the slot on the washer with a metal rib on the block (aluminium housing).
Disassemble at TDC, slot on crank pulley should be at 0 mark on plastic housing.
-- Tony
There's a notch in the the crank sprocket and a dot on the cam and aux shaft sprockets. The crank has a mark above it you line that up to, the aux shaft has a mark to the right, and the cam sprocket has a mark at the top. You have to get these just right, one tooth off and it won't run well at all. There are no adjustments, you just have to get the belt on with everything lined up and then it stays that way.
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