Changing flywheel on a 10v mc1

[OskarH]

Hi all,
I have a MC1 engine for my next project. The engine came from an automatic car and i would thefore need to find a flywheel for the car. Ive read a lot about using 7a/3b flywheels and that would work for me as Im planning to go with an efi conversion.

my question howerver is are the stock flywheels for 10v and 20v 0-balanced or are there counterweight to externally balance the engine? I have heard both yes and no to this question.

if not 0-balanced is the counterweights the same for all or some of the 10v/20v models?

i would like to stay away from opening the engine for a complete engine balancing.

best regards
Oskar

[K Simmonds]

I stand to be corrected but I'm 99% sure they are zero balanced, there isn't really time for balancing the entire assembly with a mass produced engine as it would add considerable time and cost to production and prevent interchangeability between different cars.

I had my 3B one checked after it was skimmed and the guy who did it who's really fussy said it was perfectly balanced.

you can also use an NG flywheel I believe as they have the same tooth count, though you may need to either fit or move the timing pin, I honestly can't recall. I know I sold the one from my old FWD Coupe to a member on for use on an S2 engine build but that was so long ago I can't recall the conversion we had about it.