8 replies to this topic

[Dave]

Hi guys, going to do some upgrade to my car, got some questions regarding cams and springs.

- should i get the HKS Vvt cam and the exhaust cam? I got a power fc already which will be able to control/adjust the vcam.
- Did some research, some ppl saying that changing cams will lost some of low-mid range power and torque, is it true? What is the major benefit if going for the HKS cams?
- what combination should i go for? pair 264 or 264/272?
- Does HKS do uprated valve spring? Couldnt find it on their website.

Thanks

Dave

[snoopz]

Hey Dave, I can't comment on the low end side of things as I have a big single. But that being said I gained an extra 500rpm in spool time with the cams, which is huge!
And to compare power output with the difference in cams and no cams, I sold my turbo to a good mate he was making full boost at 5000rpm and 280rwkw on 18psi. I was making full boost at 4500rpm and 307rwkw on 17psi. I know tune makes a big difference but that all can't be tune!

It's completely up to you what sized cams you get, but I'm quite content with my 264/264

In regards to your uprated valve springs, hit up Brian Crower, they do a package deal for them all and I think they are fairly cheap.

[Indelible]

its only neccesary if you are going big single otherwise think you'll out flow the std rear turbo housing
but the loss down low is very minor , and they actually make the car nicer to cruise at low load/revs
and yeah before cams and valve springs i made 265rwkw on 20psi , after made 315rwkw on 19psi same dyno

[Dave]

Indelible, on 13 November 2011 - 09:38 AM, said:

its only neccesary if you are going big single otherwise think you'll out flow the std rear turbo housing
but the loss down low is very minor , and they actually make the car nicer to cruise at low load/revs
and yeah before cams and valve springs i made 265rwkw on 20psi , after made 315rwkw on 19psi same dyno

Not really a big single but going with a GTX3076 with 6Boost manifold in twin scroll set up.
The only concern is losing torque and power in low-mid range.

[JZXjunky]

For the money and the power gain putting cams in a 1j why not 2j it??

[Indelible]

well if thats the case get them , i have a gtx3076 on mine and they made a good difference and you wont notice the torque difference trust me

[Dave]

Indelible, on 13 November 2011 - 07:01 PM, said:

well if thats the case get them , i have a gtx3076 on mine and they made a good difference and you wont notice the torque difference trust me

Thanks for the info, wondering if you have uprated valve spring? And where did you get them?

Dave

[Indelible]

yea i uprgaded valve springs and stem seals too while i was at it , i did hks 264 vvti in cam , brain crower 264 ex cam
and brian crower springs and ti retainers

[1400r]

there's 2 sets of cams on yahoo at the moment

ones even v-cam