Bob - Thanks for the reply, I gathered as much but still wanted to throw the
question out there. one bit of useful info I didn't specify was that the
cylinder ridge was almost undetectable and the rust was very light. I guess
what was bothering me the most was that there was heavy cylinder wall
discoloration in way of the 2 & 3 cylinders at BDC. I can only surmise that
this was the piston position for the previous 5+ years while moisture & the
like had its way.
After weighing the pros and cons of this issue, I've decided to give the
cylinders a good honing, replace the main & rod bearings, send the head out
for resurfacing/valve dressing and button her back up.
Thanks again for the reply,
Dick
----- Original Message -----
From: Bob Howard<mailto:mgbob@juno.com>
To: csrb7007@msn.com<mailto:csrb7007@msn.com>
Sent: Monday, June 05, 2006 12:19 PM
Subject: Re: Cylinder Rust
Dick,
So far today I have not seen any replies to your query. Since we
can't see the engine, it could be that listers are reluctant to offer an
opinion.
As one who is a believer in trying simple and cheap approaches first,
I would suggest that you buy one of those brushes that is used for
scoring the bores after a boring, and see if you can clean up the rust
with the tool. These are the brushes that have balls of abrasive at the
end of wires that poke out perpindicular to the center wire handle of the
brush. Look a bit like some kinds of toilet brush. If you can use
light oil such as kero or paint thinnner as you run the brush up and
down, it may clean up the rust well enough so you can then see the
condition of the cylinders. If they are in good order, not ovalled and
not tapered excessively, the new set of rings should do the trick for
you, and new bearings, at least new rod bearings, should be installed any
time you have the engine apart because they are cheap and easy to do.
Mains are more difficult to do. Fortunately, they wear at about 1/3 the
rate of rod bearings. If the engine has had clean oil and filters during
its life, the mains should last 200,000 miles.
Bob
On Sun, 4 Jun 2006 20:51:02 -0400 "RICHARD BOES"
<csrb7007@msn.com<mailto:csrb7007@msn.com>>
writes:
> Listers:
>
> Pulled the head off a '79 B that's been sitting for the last 5 years
> and found a fair amount of surface rust. Before we started the project I
too
> a set of compression tests (dry & wet) and the results were between 150 and
> 165 psi (dry) and 165 and 185 (wet).
>
> My question is whether honing the cylinders (install a new set of
> rings/bearings) will be sufficient?
>
> As usual...thanks for your very useful responses.
>
> Thanks,
> Dick
> '79 B father & son project car (recent paint booth shot attached)
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