Has anyone cc'd the HR heads yet? If you have, post here.



TIA.

 

I saw a pic of the VQ35HR heads and they looked very almost identical to the Cosworth heads...if they are the same then the CC's would be 58.

 

Well i think if anything the HR heads would have a smaller volume or same as OEM DE heads due to the squish pads. I really need to know this...

 

Its easy...

3.5 liters
10.6 compression ratio
6 cylinders

= 55.03 CC @ TDC/cylinder

Is this what you were looking for?

 

Is it really that simple?

Thanks for that. The only issue with this though is that it doesn't tell me if the decreased combustion chamber volume is by virtue of a smaller combustion chamber or increased piston dome. I need to know since I'm thinking of sticking HR pistons in my block. It's already apart and needs to be machined anyway to accept oversize pistons so i thought these would be a cheap mini-upgrade. I need to know what the resulting compression ratio with the HR pistons and DE heads will be before i move forward.

 

That I couldn't tell you.
Only way to know is to try it.

 

^So Tony... what's up your sleeve for the HR?

 

See nothing wrong with threadjacks, huh?

 

Just slapping them in is the last thing i want to do. Thanks anyway.

 

Not at all, esp since you got your answer.

 

I got helpful answer (which i thanked him for), but not specifically what i was looking for. Looking for head cc's in particular.