On Oct 31, 2007, at 10:29 PM, a1g2r3i wrote:
> There may still be
> possibilities here though. What is it that holds the VW cylinders to
> the crankcase? If it is the heads themselves, wouldn't something have
> to be made to keep the cylinders in place?
The cylinders are held in place by 4 long bolts that come up from the
crank case, go through the cooling fins of the cylinders, and through
the tops of the cylinder heads. The cases are/were made of an
aluminum/magnesium alloy. The cylinders were cast iron. I believe the
heads were the same alloy as the case. They were, in any case,
aluminum. You could strip the spark plug holes in the heads fairly
If all you're using the case for is a rigid straight edge, you might
want to think about using the seam where the two case halves join
instead of the cylinder bank holes. The cases were precisely machined
enough that they didn't have gaskets between the two halves.
Personally, I'd be tempted to look at the VW transaxle more. Might
even have the bearings you need already in it.
-Jim (who is very happy to have a question he can actually answer go
> I am wondering if the
> cylinders could be done away with altogether and take advantage of the
> part of the crankcase where the cylinders connect to and manufacture a
> spindle head that would butt up to the crankcase the same way the VW
> replaceable cylinders did, thus maintaining squareness in the build.
> It may be a good while before I can follow this up but I am thinking I
> am going to keep my eyes open for a few VW CRANKCASES and perhaps a
> heavy truck full floating type steering spindle. I am now going to
> take this to bed to sleep on. POSSIBILITIES indeed!!!
> thank you
> kind regards
> dennis mac
> --- In firstname.lastname@example.org, "cedley1969" <cedley1969@...>
> > New to the site, I notice the use of straight four crankcases, has
> > anyone tried a set of flat four beetle type cases?
> > You'd need two left or right hand cases to parallel up the bores but
> > it would give a very compact layout for the headstock and secondary
> > shafts.