The V8 Owners Forum -

Posted: **Fri Jan 04, 2008 4:51 pm**

If valves are 34.5mm and 40.0mm (didn't say which is which) - does that mean they are completely standard??

cheers

Posted: **Fri Jan 04, 2008 9:17 pm**

chodjinn wrote:If valves are 34.5mm and 40.0mm (didn't say which is which) - does that mean they are completely standard??

cheers

Yes..

Big valves are 41,4mm and 35,5mm
Ultra big valves are 43,1mm and 37mm or 38mm depends of valve stem diameter..

Posted: **Sat Jan 05, 2008 11:41 pm**

im stg3 heads i got
Inlet= 41.47mm Exhaust=35.57mm

Valve sizes