the "0" on the flywheel

[Huw Powell]

> is not present in my 89 200TQA.
> 
> whilst setting the timing, i spent quite a bit of
> time turning the motor forwards and back trying
> to locate this circle.  i've seen loads of pix of
> it online, and i saw it in my bentley.  however,
> the car itself does not have one.  it has a
> straight line, which huw made mention of in a
> reply to ameer regarding timing marks.

> i grabbed a hunk of emery cloth and scrubbed away
> at the flywheel for a good 15 degrees in either
> direction of the TDC mark.  nothing, i tell you. 
> i had my buddy look as well, cuz i figgered that
> i was lying to myself.  he couldn't find it
> either.
> 
> is it at all possible that the flywheel is not an
> original item, and was not given the stamp at the
> factory?  or, is it that the timing is currently
> off by 6 degrees?  

TDC can also be identified but, perhaps not so precisely, by the 
position of the #1 piston.  Pull the plug, and insert a long thin 
object, like a dowel or screwdriver.  Slowly rotate the crank, and the 
"indicator" will rise and fall, TDC as, as you might guess, at the dead top.

Be careful while doing this, due to the angles the object will not ride 
up and down smoothly, it can 'catch' on the piston face and bind against 
the plug hole.  When close to TDC on each side, though, you should be 
able to go back and forth and get pretty close.  Surely closer than six 
degrees, to at leat verify your mark.

I have no idea why your flywheel is missing the mark, that sounds bizarre.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/