Bill,
I have been advised not to use a high volume pump unless I have at least a
seven quart oil pan, with baffles, because of possible oil starvation in
hard cornering. Melling makes an M-68 standard volume pump which is in the
non-Tiger 302 I just built.
For the rear main seal, I use Fel-Pro, but I am sure there are others just
as good. Just be sure it doesn't go in backwards and grease the seal lip and
the crankshaft before you install it. And a little sealer on the outside
circumference of the seal wouldn't hurt, either.
I do agree, though, that you might want to first change the pump and see
what happens. You might get lucky with the existing rear main seal.
Good luck.
A. C. Tynes
New Orleans
> -----Original Message-----
> From: tigers-bounces@autox.team.net
> [mailto:tigers-bounces@autox.team.net] On Behalf Of Bill Waite
> Sent: Tuesday, June 29, 2010 12:31 PM
> To: tigers@autox.team.net
> Subject: [Tigers] Oil Pressure & Rear Main Leak Question
>
> For a number of years (ever since day one with a newly
> rebuilt 302 roller cam motor), I've lived with a rear main
> oil leak. Not bad enough to demand fixing... but bothersome.
> I've finally decided to fix it.
>
> It's an '86 "RHO" (an early Ford crate engine...
> remanufactured 302 HO). It has the one piece rear main seal,
> so I'll have to pull the trans to get at it.
>
> However, one concern I have is with the oil pressure. When I
> got the engine, I installed a Melling M-68HV high volume oil
> pump. The pressure has always been on the "high" side (at
> least I think it is high). At idle or higher RPM's, it stays
> at a more or less constant 60 to 65 lbs.
>
> Is it possible that the leak is possibly a result of running
> more pressure than I really need? The PCV and breather are
> fine, so I don't think it is a crankcase pressure issue.
>
> Guess what I need advice on is whether I should change the
> oil pump to a standard volume street type to run at a
> somewhat lower pressure? If so... any recommendations on the
> oil pump brand & model number?
>
> Also: any suggestions regarding a specific type or brand of
> rear main seal?
>
> Thanks in advance.
>
> Bill Waite
> Grand Rapids, MI
> B382100437
>
>
>
>
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