Cams R34 Gtt

[neo32]

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

[wolverine]

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.

[neo32]

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?

[neo32]

and will the head need to come off

[wolverine]

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.

[bombtrack]

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.

[DECIM8]

Just wack them in .. No issues when I had them at 260rwkw

Feel great to pop out the clutch and have it jump up to around 3g in under a 10th of a second

[neo32]

can anyone tell me what valve clearance are required

my head is allredy quite noisy

compared to my mates gtt

i have had the head rebuilt allredy once!

[wolverine]

http://www.tomei-p.co.jp/_2003web-catalogu...2_cam_RB25.html

the clearances are listed here under specs. ie. 0.45mm

[neo32]

who in brisbane can install cams too