Jump to content
SAU Community

Recommended Posts

So im looking at purchasing a set of cams and iv come across these camtech cams. Has anybody heard of them? Anybody Using them? opinions will be much appreciated. Also what cams does everybody recommend using in a stock bottom end RB25 with a GT3076 .82. Making 300kw now on 16/17psi will be upping the boost to 20+psi when i decide on cams and wont be using the VCT.

Cheers, Phill.

Link to comment
https://www.sau.com.au/forums/topic/431071-camtech-cams/
Share on other sites

How would 268 go on a 3076? im looking at the 264 in/ex 9mm lift.

Any advantage of leaving the VCT? wouldnt the vernier cam gear (when adjusted) be better?

Im no expert, so take it with a grain of salt, but i think they are to big and suited for 60+- to 67mm turbos

i'd use something in the 250's for a 3076 to fill up the powerband

cams need to be be matched to turbine/exhaust flow, as thats always your bottleneck....backpressure

sure you can shift your powerband to the right, but backpressure will be the one to have the final say in the matter

and nose the curve over generally, no matter how big the camshaft fitted

cheers

darren

Edited by jet_r31
  • Like 1
Link to comment
https://www.sau.com.au/forums/topic/431071-camtech-cams/#findComment-6996112
Share on other sites

Looks like ill be keeping vct and going hks 256 in 264 ex with an exhaust cam gear. They look like a popular/good choice. Im after a fatter mid range and try to have a more aggressive overall power ban.

Link to comment
https://www.sau.com.au/forums/topic/431071-camtech-cams/#findComment-6996237
Share on other sites

I know it does the exact same thing. But does it give as much of an improvement as lets say a vcam on a 26?

Hard to know the answer to that. Who would do a back to back with the OEM unit then a Vcam. Either would have much more twist down low than a static cam arrangement.

Link to comment
https://www.sau.com.au/forums/topic/431071-camtech-cams/#findComment-6996601
Share on other sites

Looks like ill be keeping vct and going hks 256 in 264 ex with an exhaust cam gear. They look like a popular/good choice. Im after a fatter mid range and try to have a more aggressive overall power ban.

Same profiles as mine and at 800+HP :)

Link to comment
https://www.sau.com.au/forums/topic/431071-camtech-cams/#findComment-6996694
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

    • So I'll put filler past the repair area a bit to make sure I don't miss anything. Then I'll block it until it's almost level, put the guidecoat, then keep blocking until it's gone. Then it's still wavy.  In regards to hitting the panel, I saw this video might give more context - Skip to 0:47 he knocks it down. But yeah I'm sanding until the guidecoat is gone then checking because otherwise my filler is still well above the bodyline. Unless what you're saying is I should put guidecoat around it early, surrounding the filler then stip once it's gone?
    • I refreshed the OEM injectors with the kit and connected it up. It now ideals okay even with the IACV removed. Driving still has the same cutoff issue like the 550cc injectors so the issue is somewhere else. I bought FPG's Fuel Pump Hanger. I will be installing it next, but it is not as straightforward as I thought it was with my limited wiring knowledge and no instruction on the specific model I purchased (FPG-089). I also got the incorrect billet clamp as I could not find info on the OEM sizing.
    • Stop looking at the garage floor, and turn the radio up a bit louder if there's any strange noises...
    • No. Turbo shuffle and surge/flutter are not the same thing. Specifically, on a GTR, turbo shuffle has a definite meaning. On a GTR, the twin turbos are assumed to be the same thing and to operate the same way, exactly. In reality, they do not. Their exhaust sides are fed and exhaust a little differently, to each other. Their inlet sides are fed and exhausted a little differently, to each other. Consequently, when they are "working" they are often at slightly different points on the compressor map compared to each other. What this means, particularly when coming on boost, is that one of them will spool up and start producing extra flow compared to the other, which will put back pressure on that other compressor, which will push the operating point on that other compressor up (vertically). This will generally result in it bumping up against the surge line on the map, but even if it doesn't, it upsets the compressor and you get this surging shuffle back and forth between them That is "turbo shuffle" on a GTR. It is related to other flutter effects heard on other turbo systems, but it is a particular feature of the somewhat crappy outlet piping arrangement on RB26s. There are plenty of mods that have been attempted with varying levels of success. People have ground out and/or welded more material into the twin turbo pipe to try to prevent it. Extending the divider inside it works, removing material doesn't. There are aftermarket replacement twin turbo pipes available, and these exist pretty mush purely because of this shuffle problem.
    • You can temporarily* use lock collars to keep it in place until you can do the bushes, back the nuts off, slide them in, snug back up. *temporarily is often for ever
×
×
  • Create New...