MG flywheels are marked . Look around the edge next to the ring gear. There
will be
1 / 4 stampped into it, sometimes hard to see. This marking aligns with
numbers
1 and 4 pistons, i.e. when the number one and four pistons are at the top
of the cylinder,
the mark on the flywheel should also be up. If there are holes for two
alignment pins, it should have two.
Ron Sanborn
----- Original Message -----
From: <cyberemp@comcast.net>
To: "MG LIST" <mgs@autox.team.net>
Sent: Sunday, June 20, 2010 3:41 PM
Subject: Re: [Mgs] MG flywheel. Is there balance in our MG flywheels?
> your note turns up a question that has engaged me for some time.
> Is there balance in our MG flywheels? Years ago I had the engine to my MGA
> balanced, with the flywheel turned and a different ring gear installed.
> There were no marks or instructions on the orientation of the flywheel for
> installation.
> Recently I had the balance of the flywheel of a later (76-80) MG checked,
> and was told that it was not a perfect, or neutral balance.
> I could find no markings on this flywheel for instalation either.
> Is it possible that this variance is due to the motor involved? 3 main
> bearing verses 5 main bearing?
> When rebuilding the engine of my first car, a 1967 Ford Cortina GT, I was
> told by my my mentor to make small marks on the flywheel and on the
> crankshaft end so that I could reinstall the flywheel in the same
> orientation, in the hope that the original assemblers in the factory had
> known what they were doing. He said this with a smile, indicating a bit of
> doubt as to the attention given to this matter.
> So I offer this question to you, my fellow enthusiasts. Is there balance
> in our flywheels?
> Eric.
> 46 MG-TC
> 59 MGA
> 65 MGB
> 70 MGB
> 71 MGB
> So many cars, so little parking.
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