Jump to content
SAU Community

Recommended Posts

Hey there,

Build a rb25de + rb30e, Aftermarket set of cam shafts, And been told to use flat top pistons for the higher comp.

But after having a look at stock rb30e pistons, there are ingraves for the valves to 'sit' Wouldnt flat tops + Aggressive cams mean theres a good chance something is going to kiss each other... hard.?

I know there is a thread with 290 pages of rb30de convo goodness but bloody hell!

*Injector upgrade? Its going to be NA, will the rb25de 'jectors be enough?

*Anymore pointers would be great!

Link to comment
https://www.sau.com.au/forums/topic/199902-rb30de/
Share on other sites

have a look at this..

http://www.skylinesaustralia.com/forums/Po...sp-t194033.html

I heard of people using both sets of pistons..

Injectors should be ok.. unless your wianting to push more than say 130kw.. then RB25DET is the go.. cheap alutnatives.. same with a fuel pump..

Where are you getting ur cams from?.. from a turbo? NA's get more power from the overlap in the cams.. so if your using turbo cams you may not be extracting the full potential out of the engine..

Also.. the CR your running will also determin if things go bump in your engine..

max stock regrounded cams is on the link above too..

Hope it helps mate

Edited by GTS4WD
Link to comment
https://www.sau.com.au/forums/topic/199902-rb30de/#findComment-3560171
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


  • Latest Posts

    • Nice car! I’m glad folks in the US have gotten past the FnF and are buying real cool cars like the 260RS I was with a bunch of mates in Portland about a year ago and spotted a green Stagea (just a regular 2.5T AWD) parked about 2 blocks away and they were like “a what?” So I made a bet with them for a round of beers and said “ok one of you run down there and tell me if the steering wheel is on the correct side” 5 mins later the American comes trudging back up the hill and goes “he’s right guys. Ok what beer do you want?”
    • Should replace OR drop the tank, give it's good clean. Might be worth replacing that entire fuel level/pump/cradle thing with this: https://frenchysperformancegarage.com/products/fpg-s13-180sx-r32gtst-single-pump-hanger-kit-billet-hat-6-v3-fpg-089?gQT=2  
    • Thank you so much for the help
    • Yes it is ATF. I quote @Duncan "it takes a good synthentic auto trans fluid like Castrol Transmax Z" It's not a diff. It's a transfer case. Totally different thing. Yes, fluid will come out the sender hole. No you do not really need to drain it. Just pull the old, quickly poke the new, clean up and top up. But realistically, you should probably take the opportunity to change it anyway.
    • Hey all. I’m looking on replacing my speed sensor on my R33 GTR. Will the center differential need to be drained, and if so, the center diff uses ATF fluid D? I found information on the transmission, front diff and rear diff. Can’t find a for sure answer for the center diff. Any help will be greatly appreciated.
×
×
  • Create New...