[Vwdiesel] Strange TDC conundrum

Sandy Cameron scameron at compmore.net
Fri Nov 5 12:46:57 EST 2004


So it's friday, and I checked the rest of the FW circumference, and found
the TDC V-notch about 61 degrees away from tdc. (late)

Whipped off the valve cover (remember this engine is running just fine) and
found that this is NOT TDC! (don't feel like pulling an injector just yet)

The cam and the pump agree that tdc happens about 60 degrees before the TDC
notch gets to the hole.

So.......... since the cam and the pump agree with each other, and the
engine runs, the CS sprocket must be in the right spot. That's set at belt
installation time anyway.
The cam, the pump, the #1 piston, and the crankshaft sprocket all agree
witth each other, the engine runs sweetly, no loud crashing noises, but the
FW is out by 60 degrees, (about one bolt hole spacing on the crank flange.

NOW, I have checked an audi FW in my junk box, and the pressure plate gang
washer (the 6 bolts pass through it on the way through the PP and into the
flange) from a 1.6NA engine,
(don't have the engine and PP at moment, they're off at the fabricator being
attached to an 8kW alternator) One bolt hole is off-spaced so you can't put
it back on wrong ! ! !
(Oh yeah!)
Only possible answer, the PO's shop, doing clutch, drilled the odd hole so
the PP could be bolted on wrong, or he assembled the FW to the PP ignoring
the dowels, or even removing them...
I favor the drilled hole idea, as I'm not sure how one could phase shift 60
degrees with the flywheel on the PP, as there are 8 bolts to register the
flywheel. That wouldgive a shift in 45 degree increments.

I dont believe the shaft could twist 60 degrees, or there's a free lunch.

I don't want to get in to it now, but at next clutch change, I will sure
check this out.
My TDC mark is now a yellow paint spot.

Sandy



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