BVH

[Etches]

Just wonderd what the specs are for the bigger valves and where people got em from, thinking about doing it myself thats all. Cheers

Etches

[Robin]

i take it you are pretty shit hot at machining?

[PeteG40]

people used to get the valves from jabba - but they stopped doing them now

[dub-disaster]

Think man in the shed from club gti has last set of jabba valves and a head that's been inserted with seats waiting for the correct customer.
 As for doing it yourself it's pretty hard to do well I think you can either do it on a 5-axis cnc machine if your good at writting cnc programs and have tested a few heads on a flow bench n know where to remove material from.
   Can be done by hand aswell but that's a bit of an art form aswell I think and you'd need to have larger valve seats insearted.
   I think if done incorrectly then it can actualy hurt the performance of your engine. This is all info I picked up along the way when I was looking into it I ended up just going for a standard porting job as it ends up being alot of cash for not a massive amount of gain. Buy if your causing every last bhp and you've got the cash to spunk have a word with the man in the shed think a bvh from him including valves is in the region of £600 Inc vat plus your head in exchange. 

[Etches]

I wish I was shit hot at machining, can write programs tho. But this wasn't the case as I have a mate at Sheffield engine services n just wonderd where to get the valves from, sounds like too much effort to me . Shall just stick with a ko3 then

[polo classic]

You can get them from any German specialist

Knobloch-sport.de
http://www.kwl-motorsport.de/
sorg motorsport

Ventile, Durchmesser E=38, A=32 Satz 288.-
 
Ventile, Durchmesser E=37, A=32 Satz  288.-
 
Ventile, Durchmesser E=36, A=31 Satz 288.-
 
Ventile, Durchmesser E=38,5, A=33, (nur für Tassenstössel) Satz 300.-