The obvious downside is the cost of a new small-journal cam.
Glen
--Previous Message--
: Thanks for pointing that out. In my copy
: of Bentley I found the following:
: Cam Bores in Block: 1.9695 / 1.9680
: Cam Journals: 1.9654 / 1.9649
:
: That gives a clearance of 0.0026"
: for the maximum material conditions and
: a clearance of 0.0046" for the
: minimum material condition. Frankly,
: that 0.0046" value is higher than
: I expected.
:
: I'll call the machinist tomorrow and
: ask that he measure the cam bores in
: the block for me paying particular
: attention to (and looking for) an oval
: vertical shape. I'll take the cam to
: work and borrow mics to measure it.
: All I have at home are calipers and
: while I can usually get consistent
: readings with them, I'd rather not
: trust them for anything more than
: screening on engine parts.
:
: Again, thanks for pointing this out.
: Cam bearings are about $40. Goodness
: knows what I will be charged if he has
: to bore the block and install them.
:
: Doug L.
:
:
:
: --Previous Message--
: When you check the housing bores, it's
: just like any other housing bore, check
: & note the diameter around multiple
: points inside the bore.
: You'll probably find the wear in a
: vertical plane, ie very slightly
: oval/oblong. If so you will have to
: know how much, and approx how many
: degrees of the bore is out of spec.
: You can save a very slightly worn block
: by fitting bearings, but once you get
: over .005 clearance in there, say bye
: bye to idle oil pressure.
: This is exactly why some folks have
: problems with freshly
: "rebuilt" engines.
: Mic everything.
: Keep us posted,
: Glen
:
:
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