libertyc@erols.com wrote:
>
> Tony thanks for the advice on the oil pump. I pulled it and checked all
> clearances with help from Haynes and it all checked out. The gap between
> inner and outer rotor was .004 - right at the max that Haynes said was
> ok. The other gaps were under spec.
>
> I've decided to replace my rings. The bores are in nice condition for
> the most part with a small ridge on cyl. # 1 and small ripple in #6. I
> think both can be honed out. With a newly redone head and new bearings
> all should be a go.
>
> Carl Huppert
>
> Tony Robinson wrote:
> >
> > NO NO NO
> > Water or anti-freeze in the cylinders???? a definite no no.
> > I would have gone for the compressed air method of the leak down test
> > BEFORE the head was removed.
> > If you want to put something in the cylinders to check for seepage
> > through the rings, I would say Marvel Mystery OIl or some othervery
> > light weight oil, but not water.
> >
> > >
> > > Also, someone on the list regapping the oil pump. Can I do this rather
> > > than replacing an 80,000 mile pump?
> > I think it was I who mentioned re-lapping the oil pump.
> > If the surfaces of the rotor and the barrell are not scored you can
> > feel safe in using it.
> > Use it if you have clearances of .008 to .010 between the rotor and te
> > barrell.
> > Clearances over that will provide slightly less oil pressure than spec.
> > If you need infor on re-lapping an oil pump, let me know, but I suggest
> > that if you have any doubts about the pump at all, replace it.
> > >
> > Good luck Carl,
> > TonyR
Carl,
Remember, honing will not take a wave out of a cylinder.
Depending on how bad it is, it is likely still a viable cylinder.
Honing is a matter of course when installing new rings.
The oil pump is a pretty tough piece of equipment. About the only time
I would worry about it is if the oil pressure was low before the engine
tear down.
Low oil pressure is not always a sysmptom of a bad oil pump, and can
easily indicate other problems such as clogged oil passages which is
most often the case. Sometime, it may be an indication of too light of a
weight of engine oil or bad engine bearings.
Regards,
TonyR
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