Originally Posted by CASO
Originally Posted by 12 Port
You just admitted on the last page to "just discovering" that the Stovebolt has 4 different housing bore sizes. You might take a hand hone that fits in a drill and call it align honing, but not many shops are going to gamble with a $2000+ honing mandrel that is designed to fit through all the housing bores at once and are the same size and chance tearing it up.


Thats 1 set for each bore size right?
Like one set for each different big rig rear ends, one set for sbc 283's one set or 235's plus all those pesky blue oval jobs?

Is that why some shops just flat out don't do some engines?

Caso, these mandrels are 4-1/2 feet long, and have honing stones and guide shoes almost their entire length. They are attached to a large electric drill sized drive motor that spins the mandrel via a universal joint drive shaft. So imagine trying to spin the mandrel with it only supported with one 1-1/2" wide bearing surface. Thats where the damage can occur because of it not being supported by anything more than just one housing bore in 4+ feet of length.
Yes your right about the different housing bores taking different sized mandrels. Yes, they get incrementally more expensive the larger OD they get also. So it can be an expensive investment.

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