• From: UK
  • Registered: 2004-05-21
  • Posts: 13

Topic: Can you fit a 130tooth flywheel on a 6v crankshaft?

If you want to fit a 12v flywheel and starter to a 6v engine, will the later 12v  'o ring' flywheel fit the end of the 6v crank? (6v cranks have a bigger diameter boss part at the rear end and use bigger shims, does this stop the 12v flywheel from fitting?)  I appreciate that the o ring wouldn't seal and the early paper gasket would be needed.

Before anyone says it, I realise you can run a 6v starter and 109t flywheel on 12 volts and there's no need to change it as part of a 12v conversion,  but would the later flywheel fit if you wanted to upgrade?

  • Registered: 2004-05-21
  • Posts: 71

Re: Can you fit a 130tooth flywheel on a 6v crankshaft?

The Inside of the "O" ring flywheel must be cut from the "O" ring grove out to 2.165" dia. and then it will go right on. See -> http://www.1800vw.bizhosting.com/qa_12star40hp.htm

vicsvw's Website

  • From: UK
  • Registered: 2004-05-21
  • Posts: 13

Re: Can you fit a 130tooth flywheel on a 6v crankshaft?

Thanks Vic, good to get it confirmed and good to have the dimensions too.
Regards chris