Which, again, pre-supposes that the amateur mechanic has a slide-hammer with
which to remove the main caps, as well as a torque wrench that reads
accurately to 70 ft. lbs. to replace them.
The purpose of my note to Max was not to say that this job cannot be done.
Anything can be accomplished given enough effort, knowledge and ingenuity. I
was trying (and apparently failing) to make the point that it is a very
difficult job, not one for the inexperienced mechanic. I felt that Max's
original note gave the impression that it's OK to buy an engine with known
bad main bearings, on the assumption that changing them was something the
average person could do about as easily as changing rod bearings.
Lawrie
-----Original Message-----
From: Bruce Burrows <bburrows@webtv.net>
To: mgs@autox.team.net <mgs@autox.team.net>
Date: Sunday, May 07, 2000 7:02 AM
Subject: Re: (Lawrie) Low oil pressure
>
>--WebTV-Mail-27666-245
>
>My best recollection on this is the "trapped" inserts can be very
>_gently_ tapped (a small, light hammer and punch will do the job) on the
>visible edge opposite the locking tab. This causes them to rotate round
>the journal and into a position wherefrom they can be pulled free.
>
>The new insert is installed, in the presence of much oil and/or prelube,
>by reversing the procedure. Smooth end first, it is slid into and then
>round the space twixt journal and block, until the locking tab is
>engaged.
>
>In order for the above to apply, it is necessary first to remove the
>journal caps. I cannot recall if the rear cap can be removed with the
>engine in the car. But it may not be pivotal.
>
>If the journals are decent but the inserts worn, some oil pressure
>improvement can be had merely by replacing those inserts which _are_
>accessible. The resulting pressure rise will help preserve what remains
>of the inserts(s) which could not be serviced.
>
>Bruce Burrows
>
>'59 MGA basket case
>'60 Daimler SP 250
>'61 Daimler SP 250
>'73 MGB driver
>
>My Dart website (not my cars!):
>
>http://community-2.webtv.net/guardian45/THEDAIMLERSP250DART/
>
>
>--WebTV-Mail-27666-245
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>Message-ID: <003501bfb7c8$5952bd00$4951d3cf@lawrence>
>From: "Lawrie Alexander" <Lawrie@britcars.com>
>To: "Max Heim" <mvheim@studiolimage.com>, "MG List" <mgs@autox.team.net>
>Subject: Re: Low oil pressure
>Date: Sat, 6 May 2000 18:59:52 -0700
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>Reply-To: "Lawrie Alexander" <Lawrie@britcars.com>
>
>Max,
>
>I can see how one would be able to replace the shell that is in the cap but
>how on earth would you R & R the cap that's in the block saddle with the
>crankshaft still in place?
>
>Lawrie
>-----Original Message-----
>From: Max Heim <mvheim@studiolimage.com>
>To: MG List <mgs@autox.team.net>
>Date: Saturday, May 06, 2000 12:39 PM
>Subject: Re: Low oil pressure
>
>
>(SNIP)
>
>>I think you can replace the main bearings with the engine still in the
>>car.
>
>
>--WebTV-Mail-27666-245--
>
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