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Cams R34 Gtt

neo32

By neo32,
in Engines & Forced Induction

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neo32 Experienced

neo32

Posted
Posted

just looking at doing cams on my rb25det neo

just wanting to know what people have done

resaults before and after

driveability

power delevery

where the power changes etc

any dramas people have had

thanks in advance

and any thing else u can think of

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wolverine Grand Master

wolverine

Posted
Posted

260 deg poncams type B.

they seem to make more power everywhere (10-15kw with a HKS GT-RS) with a slightly lumpier idle.

need to check valve clearances (+shims) which can add to the cost of installation.

depending on your application they are a good thing but if you are chasing higher peak power it will be cheaper to buy a bigger turbo.

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neo32 Experienced

neo32

Posted
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Posted

i have following mods

gcg gt3076

sard 650cc injectors

splitfires

pfc

avcr

fmic

3'" dump apexi ni evolution 3.5" cat back

sard reg walbro pump

hks fuel rail ( latest edition

z32 afm

car needs a pfc retune

so figured miswell get something else done at teh same time

with gtt solid lifters does it need shims?

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wolverine Grand Master

wolverine

Posted
Posted

head stays on with poncams but will probably require shimming. the factory valve clearances are different from the recommended valve clearances from Tomei. some of the smarter guys here might be able to clarify if factory clearances are ok or not in the real world.

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bombtrack Experienced

bombtrack

Posted
Posted

Almost positive you will require shimming. I have Tomei Poncams in my GTT and the tapping sounds like a machine gun. The factory valve clearances are definitely different to Tomei's.

It was suggested to me that it wasn't causing any problems, hence why I am driving it, but I will be having mine shimmed soon anyway.

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