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Re: Engine Bearing Replacement?

To: "ROBERT G. HOWARD" <mgbob@juno.com>
Subject: Re: Engine Bearing Replacement?
From: Arthur Pfenninger <ch155@FreeNet.Buffalo.EDU>
Date: Sun, 31 Aug 1997 08:00:45 -0400 (EDT)
        Let me know how it turns out if decide to do it. I found an
article yesterday that confirms it can be done. I'm wrong!
...Art


On Sun, 31 Aug 1997, ROBERT G. HOWARD wrote:

> I've seen a mechanic use a tool to change the upper half of main bearings
> with the engine in the car.  The thing is shaped like a bearing shell,
> sort of, with a pin on it that engages the oil supply hole in the upper
> bearing shell.  Then the crank and the tool are turned together, and the
> bearing spins out.  Have never used it myself, but it looked easy when
> the guy did it. I think the tool was a Lisle or one of the other
> well-known handy tool makers.   A trip to the parts store might turn up
> such a useful item.
> Bob
> 
> On Sat, 30 Aug 1997 17:27:20 -0400 (EDT) Arthur Pfenninger
> <ch155@FreeNet.Buffalo.EDU> writes:
> >On Sat, 30 Aug 1997, Scott Gardner wrote:
> >
> >> 
> >> >  I am having problems with low oil pressure on my 70 Roadster and 
> >a
> >> > friend visiting my neighbor from Australia said that what they 
> >used to
> >> > do was to pull the oil pan and replace the main and con. rod 
> >bearings
> >> > and it was good for another 40,000 miles.
> >> > 
> >> > Has anybody else done this and is it prudent maintenance?
> >> > 
> >> > Thanks for any advice.
> >> > 
> >> > Warren Pruitt
> >> > 
> >> > 70 MGB Roadster
> >> > 
> >> Warren,
> >>    I think it would be a good idea to replace the bearings as 
> >you 
> >> described.  Not all parts of the engine wear out at the same rate, 
> >> and I've heard 30-40,000 miles as a fair service interval for 
> >> crank/con rod big-end bearings.  
> >>    Bear in mind that if replacing those bearings doesn't work, 
> >the cam 
> >> bearings may be worn, although they are supposedly pretty sturdy.  
> >> Check the rocker shaft for wear, as well.
> >> Scott
> >> 
> >
> >
> >     It may as simple as your oil pressure relief valve being bad. 
> >It's
> >a cheap fix. Per my previous post you can't replace the main bearings
> >without pulling the engine. You need to remove the crank shaft to get 
> >the
> >top of the bearings out, not to mention how hard it would be to try 
> >and
> >pull the caps off while laying on your back.
> >...Art 
> >
> >
> 


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