235's are not like most newer engines in that only the rear main cap is held centered by dowels.
The other three caps are free floating, only centered by the crank.
If the clearance is checked with Plastigauge it is almost certain to be fine.
One could doubble check by putting Plastigauge at the center and near both sides to confirm the clearance.
Hey Dave,
Hotrod's on us pretty hard today (maybe rightly so, as he knows his stuff and has handed me my a$$ in he past
). Do you know if the shimmed engines were align bored when built at the factory? I thought they had different diameter main bearings making it difficult if not impossible to align bore, thus requiring shims for final fit.
Carl
I think your confusing or combined two similar machining terms that each mean something completely different.
Line boring is the process in which the main saddles are machined by a boring bar to
bore the housing bore/bores to a predetermined size. All engine blocks are line bored as either a primary or secondary operation when manufactured.
Align honing is the process in which the housing bores are
honed to a predetermined size when a smoother finish or plateau surface finish is required. All blocks can be line bored to correct or qualify their housing bores, while not all blocks can be align honed, as this requires all the housing bores to be the same size to do it correctly.
