Check the fitting (in the block) where the rearmost oil pipe connects. Moss
calls it an "adapter., pipe to block", pn 460-820. I've seen a pretty Aeroquip
fitting replace the orig and have a bearing seize. The portion of the adapter,
that goes into the block, blocks a return oil passage and forces oil to the
bearings. I got a new one several years ago (for the motor referenced above)
and found it improperly machined and would not fit into the block. I know
Barney has it on his website and presume they've rectified that problem by now,
but maybe not.
Gordie Bird
'62 MGA
'67 BGT
----- Original Message -----
From: "Richard Ewald" <richard.ewald@gmail.com>
To: "Craig Straub" <craigstraub@sbcglobal.net>
Cc: mgs@autox.team.net
Sent: Sunday, March 28, 2010 8:43:06 AM GMT -05:00 US/Canada Eastern
Subject: Re: [Mgs] Engine Frustration Part II
For some reason that last main bearing did not get any oil. A plugged oil
galley leaps to mind.
I would start by blowing compressed air though the oil galley to find out if
if it is clear. You will probably find that the line running to the rear
main bearing is plugged.
A straightened coat hanger or pipe cleaners might be your best friend here.
Make damn sure you get all of whatever is in there out before you reassemble
the engine or on start up the rest of this crap will wind up in your main
bearings and you will be tearing the engine down AGAIN.
The only other thing I can think of is the engine builder assembled that
bearing dry and it seized before any oil got to it. If this is the case,
shoot your engine builder.
On Sun, Mar 28, 2010 at 4:11 AM, Craig Straub <craigstraub@sbcglobal.net>wrote:
> Got the motor out yesterday and disassembled.
>
> The last main bearing by the transmission was seized. Rest of the bearings
> looked okay.
>
> This engine was rebuilt two years ago. Never had been ran. Spun the engine
> over several times with spark plugs out to make sure I had good oil
> pressure, which I had.
>
> Any suggestions on what caused the main bearing by the transmission to
> seize?
>
> Craig _______________________________________________
>
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