Club 80-90 Forums

I don't know how they are going to cram it all into the case, but I am on the hook!
http://www.thesamba.com/vw/forum/viewtopic.php?t=610667" onclick="window.open(this.href);return false;

Here you can find all that is possible with the WBX. Hours of engine nerdiness. Having said that I used to build air-cooled and find it interesting.
http://www.shoptalkforums.com/viewforum.php?f=37" onclick="window.open(this.href);return false;

I am aware of the typeV forum, just can't see how they plan on accomodating a ~101mm piston and barrel between the studs, unless they are plugging and re-drilling the stud tappings and also moving the stud holes in the heads (possibly sleeving them?)...but that won't leave much for the nuts to clap down on.
Getting the 84,5 stroke in must also involve relieving the camshaft to clear the big ends too.

Looks like they are goin height compression as well. All the older stuff is low comp.

There was an article in a vw magazine recently about fitting 100mm B&Ps into an Aircooled case showing the machining nessesary. 88+ mm stroker cranks are being used in Aircooled stuff so i'm assuming it could be possible with a WBX case too as they aren't that different.
Looking forwards to seeing the results.

I suppose that when using aftermarket rods (with less massive big end caps) then longer stroke cranks must clear the camshaft, which is the primary limiting factor afaics.
I still cant see how a barrel that big can go between the head studs without moving them or the whole thing being very marginal...
Any chance of a scan of the article

I'll scan it when i get home tonight and post it up.

Cool. I'm getting itchy for something interesting to read.

Here you go:

Well done. Lots of work for just a prototype engine....

Yep. Think of the bragging rights by being able to say its got a 4" bore though.

'case saver steel inserts' - Timeserts I take it ?

Pretty much the same thing.

You have to use a cam with a 1in base circle for long stroke cranks... This gives you a fighting chance with clearancing

Just means you have to order them direct