f4r valves

[hissingsid]

I need to replace the standard valves with better (having trouble with them snaping heads of when rallying), does anyone know of any one that make them. also doe's anyone do larger valves just thinkng it could be an option.

 

[Hollister]

Oreca list some in their catalogue, but I have no idea on the spec or manufacturer as my technical French is rubbish.

38 euros each (i guess)

you can browse their catalogue online at http://www.orecaonline.fr/catalogues/catacompet07/catacompet07.html

 

[BenR]

Hello Hollister,

We have not used direct replacement valves for the F4R, but the OEM items are not great if subjected to excessive bounce. So i have no experience on the valves you have shown.

However we do use racing valves from existing engines with very similar geometry that require very little modification. The reason being that the valves we use are from prooven applications i excess of 11,500rpm and over 900bhp, i dont really use any european components.

If you want a point in the direction just PM me.