There are different oppinions on how to do that on CVH. Dave at Pumaracing says to enlarge only inlets. Others say enlarge both. What do you think or have on yours?

 

anyone?

 

I see gurus only bitching around in this forum

 

Karl at NMS (Norris MotorSport) does probably the best CVH heads around,get in touch with him and i'm sure he'll do you one you'll be pleased with

 

Thanks, but I'm the one who wishes to do something on my own and not to spend my hardly earned money paying millions to the professionals
No disrespect to them, but I don't have 700 GBP for the head. I want the info only if there is anyone who will give it to me without asking money for it

 

Dave @ puma racing knows his stuff,been around for some years.The only other place id trust is SP heads,but expect to pay high prices for it.

 

i run standard valves on mine and the head has flown : over 350 bhp at the mo , will see more now when the boost is turn up and the map finished

 

That sounds interesting I'm thinking about enlagring both on my project ZVH that should give plus 20 HP easy

 

Not necesarily!! seek advice from a reputable engine builder,big isnt always best, size of valves and port shape depend upon the cam/s profile n lift etc, and decent machinist will use a flow bench to monitor flow and then this is fettled to suit the cam,No two engines are the same