Hi all any advise on fitting the later type primary inner and outer cases to a 32A ? Looking at it it seems you have to trim the crank case up with a dremel ?

Got to be better than the massive rugby ball type case that's on there !!

Would this make it in eligible for the Scottish p65 ?

Your thoughts please

Cheers

The later cases fit straight on to the 32A without the need to change anything, as for eligibility again no problem with the new shape cases.

The 32A crank cases are stronger than the 37A type which tend to crack around the area of the lower engine mounting bolt. Most works bikes ran with 32A crankcases for this reason. The 32A gearbox shell is similar to the 37A but has the raised area under the carb when compared to the later type but this makes no difference whatsoever.

Edited August 17, 201412 yr by trialsrfun

The later cases fit straight on to the 32A without the need to change anything, as for eligibility again no problem with the new shape cases.

The 32A crank cases are stronger than the 37A type which tend to crack around the area of the lower engine mounting bolt. Most works bikes ran with 32A crankcases for this reason. The 32A gearbox shell is similar to the 37A but has the raised area under the carb when compared to the later type but this makes no difference whatsoever.

Not sure what I have here then as the inner case I have fits on there but at the front of the inner case where it meets the crank case it's shorter and looks like the crank case needs to be trimmed to neaten it up ?? Is 32A the same as a 9E crank cases ??

Yes the only difference that I am aware of is that some engines had a vertical cylinder some inclined slightly forward but that would not make a difference to the chaincase fit.

For all the correct answers call Simon Bateman @ Nametab Engineering http://www.nametabengineering.com/ Simon is the best person to speak to regarding all things Villiers.

One other thing to check on the 9E/32A type engines is primary chain tension, this is achieved by shimming back the gearbox, maybe you have this too far back and need a new chain?