G4CS head cc

[mysticj]

If the 4g63 head on a g4cs yields a compression of 11:1 to 12:1, what is the exact head cc of the g4cs? 68cc?

 

[delta448]

I think you may have been misled. I've also read in the past, on certain webpages, that the DOHC head created a high CR on any 2.4L block. -Now the G4CS I'm not 100% certain of-, but I have since learned that the 4G64's stock SOHC head has exactly the same volume as the 4G63's DOHC head. I don't have a stock G4CS head to measure but I'd be surprised if it was anything other than the same 47cc that the others use.

 

[need2boostpsi]

it should yeild the same cr as the g4cs had before, the problem is the Sohc pistons dont have indentions for four valves, they just have two.

 

[delta448]

^Only if the SOHC head is an 8 valve head.

There are 16 valve SOHC heads as well.

 

[needsy]

Read this thread: My low cost high compression daily driver E85. The heads do in fact have different volumes.

 

[delta448]

I stand corrected. And so does my source...
I was misled by this thread, as I'd always thought opposite until then.

My apologies.

 

[mysticj]

I know that all 2.4L SOHC 16-valve heads have a head cc of roughly 47. The 8-valve SOHC I'm not too sure of.

 

[need2boostpsi]

^Only if the SOHC head is an 8 valve head.

There are 16 valve SOHC heads as well.

yes thank you, this is very true!