Thank you for the suggestions.
I really like your advice re: the main bearings. I had bought new mains
when I bought the other parts and now I will change the centre main also.
If it goes well I think all the mains can be done as you suggest except the
two end bearings. The bearings are standard half shells, identical to MGB.
Actually the boxes are labeled MGB.
Before I hone the cylinders can I ask if you have any preference between a
standard flat cylinder hone or the bottle brush type of ball hone. The ball
hones are becoming more popular but I don't own one. I don't believe they
are as adjustable for various size bores.
Fred Pixley
Napanee, Ontario
-----Original Message-----
From: Thecarguru@aol.com <Thecarguru@aol.com>
To: fpixley@kingston.net <fpixley@kingston.net>
Date: Saturday, January 02, 1999 8:36 PM
Subject: Re: Engine Rebuild
>Hello Fred.
>Here is what I have done in your situation.
>Put clean rags over the crankshaft from below, and put a ring of grease
around
>the bottom edge of the cylinder. Run the hone, then spray a clean rag with
>solvent (I use brake cleaner) and wipe out the cylinder. Remove the rags
and
>rinse any debris from the crankshaft with the spray.
>And as for main bearings, if you can remove the cap you can rotate the top
>bearing half out with the crankshaft if you turn the crank towards the
>locating tab. Unless the Marina uses locating dowels for the bearings-
which
>would make this impossible of course. But if it uses the typical locating
tab
>on the corner of one end you can force the bearing out. Sometimes a small
>screw fitted into the oil passage on the crank journal can be used as a
>driver. When you turn the crank it will push the bearing out.
>I've done this by filing the head of a machine screw flat, so it would be
about
>the thickness of the bearing once inserted into the hole in the journal.
Then
>you oil the new bearing and rotate it back up into place.
>Generally the center main bearing is the one that gets the most abuse
anyway.
>Hope some of this helps you.
>Gary
>75 Midget (got new pistons and rings- honed with the engine in the car!)
>
|