Hi Dave,
----- Original Message -----
From: "David Kernberger" <dkern@napanet.net>
Subject: Crankshaft/Clutch/Measurements &/or compatibility
> 6/28/04
>
> To the group,
>
> I am still compiling compatibility information regarding
> clutch/transmission combinations for 2 engines---948 Morris Minor and
> Sprite Big Main Bearing (10CC ID No.) 1100 engines.
>
> 1) Can I assume that the ONLY reason for the thicker throwout
> bearing on the 1100 is because of the thicker rear engine plate?
>
Can if you want to! But it's likely because the flywheeel is thinner, too
> 2) Does anybody know if the measurement from rear ENGINE face (not
> rear plate) to the throwout bearing face is the same for these 2, when
> assembled in stock form?
There are 3 TO bearings used on the inline "A" series engines. You use the
one that goes with the engine, without regard to which transmission you're
using.
>
> 3) Does anybody know what this dimension is; for both, if same; or
> for either, if different?
Very likely there is.
>
> 4) Can a competent clutch shop drill and tap a flywheel for an
> alternative clutch cover accurately enough to retain its balance?
>
Sure, but it likely will be a few hundred dollars.
> 5) Can a flywheel be safely redrilled to fit a larger rear crank
> flange and bolt circle? Or will this compromise its strength?
>
Sure, but why? Just trade around for the right flywheel. KISS is the name
of the game.
> Any answers anybody might have for even just 1 of these questions
> would be more than welcome.
OK.
Dave, it sounds like you're really wanting to spend some money on flywheels.
This I don't understand. A 948 and a 1098 1 3/4" main can be interchanged.
But why do it because a 948 flywheel weighs about 21 lbs and a 1098 one
weighs about 15 lbs. There is also a difference in drillings for the clutch
covers on these 2 flywheels with the exception of the 1098 ones found on the
63 or so cars. That's when they used a smoothcase behind a 1098 with a 948
clutch cover. That smoothcase also had ribcase gears in it!!!
Happy wonderings, Paul A
>
> Cheers,
> David Kernberger
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