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

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6 replies to this topic

#1
Vr4perth

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

#2
BMGTZ

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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.

BRIAN
Black evo 1 full road rego and done properly/legally

I have heaps of parts...but never the one I need.

 

 


#3
Evo-00x

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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.
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#4
BYBY5L

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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

#5
Vr4perth

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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?

#6
Geo&Kez

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

Yeah, I know, I know ..... 272's
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#7
BMGTZ

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

Or there are Georges 280s.

BRIAN
Black evo 1 full road rego and done properly/legally

I have heaps of parts...but never the one I need.

 

 



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