Valve timing and Caliper questions

[Huw Powell]

>>>The flywheel mark is the best guide for TDC, and is easy to find by 
>>>using the piston check to get close.
>>>Huw Powell
> 
> 
> My flywheel mark was 10 degrees off. I marked the spots on the harmonic
> balancer where the piston started and stopped moving as I turned the
> crank. I chose the middle as TDC. Purrs like kitten!
> BTW, how's this possible?

It's not.  Although I try never to use absolutes... you must have been 
looking at the wrong mark.  The flywheel only goes on one way, so it's 
TDC mark *must* coincide with TDC at #1.

There are several markings on the flywheel - the one that looks like an 
"0" is TDC - but of course, only when it is the right part of the tranny 
case "window" - pictures in the manual show where it is supposed to be.

There are usually markings at 6 and 12 DBTDC, and perhaps more.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/