Rb25det Cam Shafts

[frozenwaffles]

Well I ordered the HKS ones. Heaps more money but I think it'll be worth it.

One thing though I am not sure if they support nvcs?! The hks website seems to indicate they do, but performance wholesale say they don't....hmmm I guess we'll see tomorrow.

[PM-R33]

The 256 HKS is the only one that supports VCT. Hence most people (me included before) went with a 256/264 setup.

[frozenwaffles]

Ok well I'm 99% sure that's what I ended up with so that's a good thing!

[skyguy61]

Hey Dude,

Sorry to hear about your misfortune, I saw these on the dreaded Ebay have a look....oops i just noticed you've ordered HKS

oh well its still a good price for anyone that wants them.

http://cgi.ebay.com.au/Tomei-poncam-Nissan...=item518f7e5f99

[frozenwaffles]

So i now have a 264deg intake with 9mm lift and the same for the exhaust! should be interesting... will keep you all posted...

one thing though HKS cams are much better made than Tomei. Heavier and thicker overall...just feel stronger.

[frozenwaffles]

ok these cams are awesome! they are not even tuned and the cars goes sooo much harder!

i am at 0.5 bar by 2500rpm and 1bar by 3000rpm. pulls so hard and gernally feels far smoother. i am going to try advancing the intake cam a little 2-3 deg just to see if this will help with the lack of NVCS.

the idle just sounds meaty and i love it!

will have to spend some time tuning now!

All in All HKS Cams are the way to go....

[PM-R33]

Shit you got them installed into the car fairly quickly.

[The Dan]

So i now have a 264deg intake with 9mm lift and the same for the exhaust! should be interesting... will keep you all posted...

one thing though HKS cams are much better made than Tomei. Heavier and thicker overall...just feel stronger.

Yep, you definitely want the thicker chunkier camshaft. Nothing like rotational mass to make things sweet.

I hope you don't plan on revving it past 7000rpm? 9mm lift is higher than you should go on standard springs. Hope you don't snap a spring or stuff a lifter.

[STATUS]

Yep, you definitely want the thicker chunkier camshaft. Nothing like rotational mass to make things sweet.

I hope you don't plan on revving it past 7000rpm? 9mm lift is higher than you should go on standard springs. Hope you don't snap a spring or stuff a lifter.

if anything they will be 7mm once the lobes wipe off

pretty sure the hks 9mm's are ok, provided the std springs are still ok (not gone soft like many rb25's)

[The Dan]

if anything they will be 7mm once the lobes wipe off

pretty sure the hks 9mm's are ok, provided the std springs are still ok (not gone soft like many rb25's)

Repeated high rpm will break them eventually. Anything over 8.8mm is not advised.

But yeah, like you said, should be ok but it's the same as everything else...its always when you don't think something bad is going to happen when shit really hits the fan.

[frozenwaffles]

well if it does, we'll fix it then...

[Granthem]

My car is basically the exact same set up. I have the HKS 256/264 cams, and they retain VCT. Obviously you went abit larger.

I get 340rwhp on 1 bar

[frozenwaffles]

What turbo? Or same as mine? Gtrs?

[Granthem]

yup hks gtrs

[frozenwaffles]

sweet bro, who did your tuning...??? thats a good result for a GTRS!

[SATO GTS]

I so need a GTRS for my engine.

[SirRacer]

what are teh camtechs worth?

[Granthem]

sweet bro, who did your tuning...??? thats a good result for a GTRS!

Marc Jacobsen of Godzilla motorsport tuned my car. I dunno, its pulled 337rwhp on two totally different dynos. IMO, it doesnt feel that fast, but, but I may just be getting used to it.

Most GT-RS's on the forums seem to be pulling around 250ish RWKW and I would say you will definitely get there with your setup!

[frozenwaffles]

Camshafts are $1500 for the pair. Still tuning the car and experimention with cam gear timing now... It's fun doing all these experiments!

[STATUS]

ive seen a set of camtechs match a similar setup running the hks step1's.... for a third of the price. Camtech cams FTW