The piston stop tool worked great; thanks Jim!
Checking the crankshaft phase was relatively easy with the timing wheel located
on the back of the crankshaft. Removal of the black plastic dynamo cover is
required
first, and the timing wheel just pushes onto the 23mm bolt head.
Piston position that the piston stop affects is 65deg BTDC; which will likely be
the fastest sector of piston stroke. So any deviation in crankshaft phasing
will show up the most here.
My previous reference to the unique TDC timing mark is a bit dumb. Rotax supply
a pin that locks the crank at that position if ever required. So finding TDC
with the dial gauge was a total waste of time. I do stupid things sometimes; the
race tech is still too ingrained. Oh well
It was a good exercise to go through all the same. In the end the crankshaft
returned
0,0,0,0. And after being informed yesterday that the engine was sent back
to the factory for a bulk strip following the prop strike in 2003 the whole
session is being written off to an educational experience.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=511292#511292
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