Jump to content
SAU Community

Recommended Posts

hi guys

ive got my nissan skyline R32 RB20det wich has modified to it so far a dump pipe, 48mm external wastegate, nismo tune, frount mount intercooler, 3inch turbo back exst. and im looking to put in some cams all ive found so far are the Nissan Skyline R32 RB20 Camshaft Poncam 256deg 8.5mm wich they say will fit standard RB20s but will love to hear from yous... also what else will i need to get to install these in eg. cam gears, solid lifters, bigger valve springs.......ect

your help will be greatly appriciated :blush:

Link to comment
https://www.sau.com.au/forums/topic/309758-rb20-cams/
Share on other sites

They should be fine with standard valves, springs etc. But I do not see the benifit. What turbocharger is on the car, do you have any dyno figures? With the right setup you might not need cams.

I would say if you are chasing 300rwkw then it would be worthwhile, otherwise don't bother. There are plenty of good responsive setups (relatively) that can be had if you dont want anywhere near that power.

Link to comment
https://www.sau.com.au/forums/topic/309758-rb20-cams/#findComment-5106329
Share on other sites

Worth the $$$.

For nearly half the cost ($400NZD + GST or cheaper in AUD), can get the stock cams reprofiled. Tomei Poncams are similar to reprofiled stock cams (said to have have the same knotches on cams for accessing headbolts), but I gather they use new copies (blanks that are made by Tomei) of stock cams that are reprofiled to spec and badged Tomei cams. I guess it explains why Poncams work with stock cam gears, stock valve springs if they are based off stock cams. Measure the base circle of lobes and compare base circle on stock cam lobes and you'll probably notice 1mm or so missing on Poncams vs stock cams to make profile of lobes more aggressive.

In NZ there's Franklin cams that can reprofile stock cams (mention duration of reprofiled "STD" (stock) RB20/RB25 cams and looks like there are 2 options / profiles for stock cams) -

http://camshafts.co.nz/Nissan.aspx

Or there's Kelford cams in NZ -

http://www.kelford.co.nz/regrinds

I guess good hp gains for $$$$ spent and some profiles work with stock turbo, stock ECU (I presume retuned stock ECU), stock valve springs, etc.

I wouldn't have a clue who does this reprofiling in Australia. But I bet there are cam company's that do reprofiling, which can save on shipping cost's.

Here's a link on bedding in new cams on Kelford website -

http://www.camshaftshop.co.nz/index.php/Ca...-procedure.html

I gather you have to buy new lifters / flat tappets with new cams, but I guess it makes sense when fitting new cams???

There's an article on the tappet failures, so it might not be the tappet, but the oil you use -

http://www.hotrod.com/techarticles/engine/...tech/index.html

Edited by SKYPER
Link to comment
https://www.sau.com.au/forums/topic/309758-rb20-cams/#findComment-5106915
Share on other sites

They should be fine with standard valves, springs etc. But I do not see the benifit. What turbocharger is on the car, do you have any dyno figures? With the right setup you might not need cams.

I would say if you are chasing 300rwkw then it would be worthwhile, otherwise don't bother. There are plenty of good responsive setups (relatively) that can be had if you dont want anywhere near that power.

um..... ive got just the standard RB20 turbo in it ( has not yet been hiflowed) and on the dyno its currently pushing out 234.9hp

Link to comment
https://www.sau.com.au/forums/topic/309758-rb20-cams/#findComment-5107030
Share on other sites

Waste of time going cams until you need them.

360-380rwhp (boost dependant) here and I am starting to think about cams now. You have a long way to go yet :cheers:

Horses for courses however. I have seen 200rwkw RB20's that seem to respond well to cams although I am not sure if I personally call it a worthy investment.

Link to comment
https://www.sau.com.au/forums/topic/309758-rb20-cams/#findComment-5107088
Share on other sites

hi guys

ive got my nissan skyline R32 RB20det wich has modified to it so far a dump pipe, 48mm external wastegate, nismo tune, frount mount intercooler, 3inch turbo back exst. and im looking to put in some cams all ive found so far are the Nissan Skyline R32 RB20 Camshaft Poncam 256deg 8.5mm wich they say will fit standard RB20s but will love to hear from yous... also what else will i need to get to install these in eg. cam gears, solid lifters, bigger valve springs.......ect

your help will be greatly appriciated :cheers:

what turbo?

Link to comment
https://www.sau.com.au/forums/topic/309758-rb20-cams/#findComment-5107116
Share on other sites

Poncams work with stock or N1 turbo's on GTR. Tomei mention stock or N1 turbo's + Poncams on this webpage -

http://www.tomei-p.co.jp/_2003web-catalogu...0_cam_RB26.html

Wouldn't think it's any different with stock or hybrid turbo + Poncams / reprofiled stock cams for RB20DET.

Edited by SKYPER
Link to comment
https://www.sau.com.au/forums/topic/309758-rb20-cams/#findComment-5107640
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • The ATTESSA is functionally identical to R34; there were a bunch of JDM models that continued ATTESSA including Fuga/Q70, Skyline/Q50, Cima etc as an option. All with Auto only and I think mostly for snow regions. AFAIK there were no AWD VR30DDTT sold in Australia - it is on my to do list to check regs for racing a LHD car in Targa/ATR/AASA/CAMS events because if I can get the auto to work it would be interesting to run a 4wd car The Ecuteck TCM tuning is the same model as their ECU tuning, they already have it for R35 and Dose's favourite, BMW. You buy "points" to allow your computer to be tuned, buy either a bluetooth (phone app) or bluetooth+USB+Key (phone and PC) dongle, and pay for a tune that will be locked to your tuner ( ). You can also access the tuning software yourself but 1. it is mega expensive and 2. these computers have a billion parameters that intersect, so how could you ever spend enough time on it to get a decent result.
    • Or, is it a case of what it is like owning an R series Skyline? NFI what the previous owner has done or fiddled with... Ha ha ha After reading through this thread, I went on a bit of a research about the Q50/Q60. Now I'm quite intrigued by them! Is the AWD in them more like a WRX where it's always AWD, or is it more like the ATTESSA in the GTRs? By the sound of this TCU tuning, this sounds like a case of someone has made some real software for it, and you just need the right piece of hardware, and then you license that specific vehicle/TCU. Or is this a case of the software will be really expensive so only a few tuners have it, and you still have to pay a license per vehicle?
    • By popular demand.. it was a coil. Got my hands on 1 new OEM coil, replaced with the one that made the less noise difference when I unplugged it while the car was running and started the car up. No stutter and the engine light was gone. I guess I’ll buy the other 5 they have lol
    • No, code 21 is very straightforward. It can only be the things described in that diagnostic flow. In fact it has no way of knowing that the spark plug resistance is out of spec.
    • Hi, SteveL Thank you very much for your reply, you seem to be the only person on the net who has come up with a definitive answer for which I am grateful. The "Leak" was more by way of wet bubbles when the pedal was depressed hard by a buddy while trying to gey a decent pedal when bleeding the system having fitted the rebuilt BM50 back in the car, which now makes perfect sense. A bit of a shame having just rebuilt my BM50, I did not touch the proportioning valve side of things, the BM50 was leaking from the primary piston seal and fluid was running down the the Brake booster hence the need to rebuild, I had never noticed any fluid leaking from that hole previously it only started when I refitted it to the car. The brake lines in the photo are "Kunifer" which is a Copper/Nickel alloy brake pipe, but are only the ones I use to bench bleed Master cylinders, they are perfectly legal to use on vehicles here in the UK, however the lines on the car are PVF coated steel. Thanks again for clearing this up for me, a purchase of a new BMC appears to be on the cards, I have been looking at various options in case my BM50 was not repairable and have looked at the HFM BM57 which I understand is manufactured in Australia.  
×
×
  • Create New...