Quote:
Originally Posted by jhv48
I guess it's time to take it in for some exploratory surgery again.
The installer told me he dialed in the bell housing, but he probably didn't check it for being perfectly flat against the block or transmission.
He is obviously missing something. Now to convince him to do the job right.
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jhv48,
Assuming the input shaft does not bottom out against the crank, I suspect your problem is what several of the guys have already identified - block/bellhousing alignment.
Using the offset dowels to align the bellhousing bore with the crank is difficult at best. It is far better to drill out the dowel pin holes a sixteenth or so, then lightly snug the bellhousing to the block, align it to the crank center and slide two, reamed to size, thick steel washers over the alignment dowels. Weld them to your bell housing and you are done - forever on this block.
The parallelism issue is easily solved as I think Blykins pointed out at a machine shop. A light cut (just adequate to clean up the transmission mounting surface) will permanently correct any parallelism issues.
A misalignment of 1˚ (which is admittedly a giant misalignment) with your crank center line will produce an offset of 0.0175" per inch of bellhousing depth. So a seven inch deep can with one degree of misalignment will have an offset at the pilot bearing of 7 x 0.0175" or 0.1225"! Correct can alignment is a big thing. Take the time to do it right.
Ed