VW Cylinder Head Quick Reference Sheet

[luftvolks]

Trying to fill in the blanks for the sheet I am working on.



Any info appreciated but getting baseline data on stock heads would be great. Torben has posted that a stock dual port only flows 94cfm@.450 25" while the old wilson book shows 110-120 but with no depression reading. Any real world data is appreciated!! Single port data for stock unmodifed heads would be great also.

If I have missed any current production heads or have incorrect data listed please let me know.

Thanks

[modnrod]

Oh WOW!!! 

That is excellent info, thanks mate!

[kb]

Would be nice to have the Scat-heads in there also. It's hard to find any data on them though..
I'm running their Wedge-ports, but don't have any data to come with unfortunaly..

http://scatvw.com/master/cyl_heads/pro_port.shtml

[SuperTrigger]

Nice list! I like this a lot but some notes, if you allow:)

I think that Competition eliminator CNC model, right?
Asking because I had my not CNC'd CE head flowed and they flow only 159cmf@18mm lift28"

Also should there be mention of what valve size is used for flow test?

-Puide-

[Pedalpusher]

Here is Scat Super D-port head, out of the box flow test.

42x37 mm Valves.



So final numbers are 172cfm 28" at 14mm lift. We tried also with matchported DCNF manifold, that's the other flownumbers 177cfm 28" at 14mm lift.

-Mikko-

[Sepi]

What about DRD?

[Old Guy]

The AA Performance Products 500 heads have 60cc chambers while the 501 and 502 heads have 54cc.  It might help if your chart showed what reach and what size spark plug each head takes.  For AA the base stock 500 head 043 101 355CK with stock valves has 3/4" reach 14mm plugs while all other 500 heads as well as all 501 and 502 heads come with 3/4" reach 12mm spark plug holes.

[Old Guy]

Also, none of the AA Performance Products heads have steps in them.