Measurements of head and piston cc WBX head

[Piledriver]

The CC plate edge is flat (interior may have a slight dome of known CC to aid getting air bubbles out), as is the chamber sealing surface, the bore diameter//area is never in play when CCing (most) heads.

[jackstraw]

I'm missing something here.
The cylinder is up inside the head, yes?

So to be accurate, the CC plate , for a Wasser, will fit inside the head which means that its OD is the same as the heads register OD?

[Piledriver]

The chamber sealing surface is flat.
So is most of the chamber.
How big the hole is around it is irrelevant.

Once you do it it will make sense.

[jackstraw]

Saw this along with others today while waiting for the beers to chill.

I suppose I'd have to find a way to cut the plate to fit down into the head, correct?

http://www.steigerperformance.com/products/sp90005.html

[sideshow]

A WBX head is flat??? all ready, so no need to make the plate round?

[jackstraw]

Yeah but the cylinder fits into the head. I would need the cc plate to set down in there. I'm thinking the od of the cylinder is ~106mm.

http://www.thesamba.com/vw/classifieds/ ... id=1646083

[Piledriver]

Cc'ing WBX heads can be a bit tricky as the intake at least sticks up above the deck on the inner edge.
(if the seats have not been sunk excessively)

The deck checking disc may need a valve relief.
Many of the commercial discs have a shallow dish in them to allow air to escape, should have a known cc volume... might clear.

[sideshow]

Sorry, my mistake...I only store water in the windshield squirter reservoir

[jackstraw]

Thanks for the heads up. Maybe having the .040 head sealing gasket would help.
Can I get a plate exclusively for the Wasser?

An old head porting/chamber tweak was to sink the intake valve.

Just gonna have to make time to get into this thing.

[Piledriver]

A little vaseline on the head gasket is likely to do the trick, or very close.
Just don't be surprised when the deck volume is half of the chamber volume.