Quote:
Originally Posted by Davidless
Did the ring change your runout (TIR) numbers on the bellhousing?
I have to use 0.007" offset dowels for BH alignment, unfortunately the great Ford Engineers decided to use a blind hole and a hardened non drillable dowell, now I will have to figure out some kind of jack screw puller to remove, :-(
I ground the hardened surface away on the other dowel and could not get to a softer area, so no drilling for a puller, :-(
Wowe is me
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No big deal. Just use a hammer slide dowel pin puller with the appropriate collet. They will come right out without a problem. Replace them with a hardened dowel from McMaster or any other industrial supply. Make the new dowels about five-eighths of an inch longer to register in the stuff you will be welding onto the can.
The Quicktime housings are done on CNC equipment, whereas the old Lakewood stuff seemed to be done with a drill jig. I have always had to align a Lakewood. I have never had to align a Quicktime.
I would encourage you not to use the offset dowel pin alignment procedure. It is imprecise, does not repeat with bell housing removal and replacement (w/o readjustment), and changes as you tighten the bell housing attaching bolts. Did I mention it is a PITA to do?
About 6 years ago, I did a write-up on how to align the bell housing to the block. It covered both the why and also the how-to questions. If you are interested, it's still on Club Cobra; click here =>
Bellhousing Alignment
The technique I describe will consistently allow you to bring the TIR to 0.001" or less" and it will repeat, with a zero fiddle factor, for as long as you are alive!!