Chevy 350, timing chain cover and oil pan?
Bill Baugh
the disassembly. The manual said I would have to drop the oil pan to
remove the timing chain cover, but the cover came off easily without
loosening the oil pan. When I put it back together will I be better off
dropping the oil pan anyway, or is it possible to correctly seal the
timing chain cover with the oil pan in place?
Thanks,
Bill
--
Bill Baugh
National Center for Atmospheric Research
Boulder, CO
ba...@acd.ucar.edu
Chuck Biewer
re-assembly. Now, I am assuming you are using stock parts (timing cover and
oil pan). If so, and using new gaskets, it will be tricky to get the timing
cover back on with the new gasket, because the new gasket will be much
larger (not compressed) for the space it is to fill. I have done several
small blocks, and the best way to assure that you have no oil leaks is to
lower the oil pan, at least the front section. To get the whole pan off is
a separate issue, since you'd need to remove a few more parts. But. if you
can at least loosen the bolts as far back as you can go, then lower the pan
slightly in the front, and cram enough sealant into the oil pan gasket area
before re-tightening, you can expect better success. The object is not to
end up with oil leaks.
Oh, and for the timing chain, I hope you are putting in brand new steel
gears. Don't mess with the nylon gears. I never noticed much difference in
noise levels anyway.
Chuck
Don Doty
If your cover came off easy without dropping oil pan, someone has
replaced the front cover with a after market or cut the inside edge off,
cause it is a bear it get it off. If you have the option, lower the pan
and replace all.
Don
Ian
Bill Baugh wrote
> I am replacing the timing chain on a '75 Chevy 350. I have completed
> the disassembly. The manual said I would have to drop the oil pan to
> remove the timing chain cover, but the cover came off easily without
> loosening the oil pan. When I put it back together will I be better off
> dropping the oil pan anyway, or is it possible to correctly seal the
> timing chain cover with the oil pan in place?
Well Bill, I'm going to give you different advise then Chuck and Don, but
both methods will work. I have never dropped the oil pan on a small
block when removing and installing the front cover (mind you, there
are a couple of years that are exceptions, the timing cover was slightly
different). There is an inner lip on the bottom of the front cover that
basically provides the groove in the cover that the front pan seal
sits in. I always trimmed off the lip at the upper ends on both sides
only. Just the upper corners need to be trimmed off a bit. I would
then install the new front pan seal, put a liberal amount of sealer
on the top ends of the rubber seal, (ends facing up), start the front
cover on one dowel, install a bolt on that side, (just a thread of two,
don't start tightening yet), then lever the cover down on the other
side onto the other dowel. See if you can start a bolt of there, then
begin to draw the front cover on. Oh, apply a thin coat of grease to
the front oil pan lip and rubber seal. Then, as you draw the front
cover on, guide the rubber seal into place with a screw driver. Gently
of course.
This method always worked for me, and if done properly will produce
no leaks.
Ian
NANIO007
both side of the oil pan, gently pry the pan away from the block, being careful
not to break or tear the pan gasket. apply some silicone to both sides on the
front of the pan and install the timing cover, then tighten the bolts on the
oil pan!
jwol...@gmail.com
Kevin Bottorff
news:0ebc2503-fc0f-4f35...@googlegroups.com:
> I have a 350 small block did oil pan 5 times dam thing still leaks can
> some one help me please
>
a sbc. like where it leaking what you have tried already. Have you looked
for cracked pan, checked for leaking rear main seal, ect. KB