Cams for J spec vr4? 123 should be the same head right?

[Vr4perth]

Was told I can't use 272 on my stock head
??

 

[BMGTZ]

someone told you bullshit....having said that it depends on the lift as to wether the stock valve spring will coil bind.

Cams like the BC272 can be used on a stock spring....I have a set of these brand new if you want to get a measurement.


VR4,evo 1,2&3 interchange.

 

[EVO-00X]

Depends on the cam lift as Brian said.
As a rule of thumb for our 4G63 engines, I would strongly advise that if your cam lift is going to be above 10.2mm+, then you will need to replace the oem valve springs with some aftermarket h/duty valve springs to handle the higher lift without risk of binding.

 

[BYBY5L]

just thought I'd put it out there but ramp rates will play a part in the valve spring issue too, eg kelford 272's are very aggressive and will more than likely cause float, but im not an expert just thought I'd mention it

 

[Vr4perth]

Thanks for all the info go still a bit confused over the hole cam thing lol.so if I change my springs I should be able to run any 272 cams?

Any one got any cams for sale?

 

[GeoKez]

I have some BC 280's.....................

Yeah, I know, I know ..... 272's

 

[BMGTZ]

I have some sets that I might part with...depends what you want.

Or there are Georges 280s.