XR6 Head Enquiries

[ED_Boy]

Hey Guys & Girls

Does anybody out there know the exact differences between the standard and XR6 head, I've heard the intake valve heads are 2mm wider and the cam has a slightly more aggressive grind on it, would it be worth putting one of these heads on my standard 4.0? if so what are the advantages?

Cheers, Daniel

[bucko]

I wouldn't think the valves are any bigger but they do have a slight more aggressive cam over a standard 4.0 cam. Your better off putting a wade or crow cam in.

[webby_191189]

Your head would flow a bit better and you get a slightly larger cam. You might notice a small gain.

[gthofan]

and higher compression

[bucko]

Do you gain compression by putting a bigger cam in???

[gthofan]

no the head has higher compression.

standard head- 8.8:1
Xr6 head- 9.1:1

[CozEF]

the exhaust valves are 3mm bigger on the exhaust side as well apparently, haven't actually measured them myself but thats what i was told