Jump to content
SAU Community

Rb25/30 Build

tazzy

By tazzy,
in Engines & Forced Induction

 Share

Recommended Posts

tazzy Enthusiast

tazzy

Posted
Posted

Hey guys,

Ready to order pistons for an rb25/30 build i'm doing. Purchasing JE customs for the combo. Question is what compression do we want.... Want to run a gt35/40 sized turbo at around 18 - 20 psi to make around the 450hp mark at the wheels. Any one with a similar combo making similar power thats been running good for a period of time?

Looking to upgrade the camshafts also. What make of cam are you guys running in your cars?

Planning to use acl race series main and big end bearings, anyone heard anything bad about them or have a make that you would recommend?

Kind regards,

Tas

Link to comment
https://www.sau.com.au/forums/topic/353651-rb2530-build/
Share on other sites
PSI Parts Veteran

PSI Parts

Posted
Posted

I decided to go 9.5:1 (Custom CP's) instead of the standard 8.5:1 as I plan on using high octane fuel at all times and possibly E85 down the road. Even if I have to back off the timing a little it will still help having a little extra compression.

As far as the cams go, I have gone with Tomei Poncams and matched them with Tomei Valve Springs. Depends how much the car is used for everyday stuff where you want to eliminate noise and smooth drivability to some point.

I used ACL bearings all round and wouldn't even look at anything else.

Link to comment
https://www.sau.com.au/forums/topic/353651-rb2530-build/#findComment-5668115
Share on other sites
tazzy Enthusiast

tazzy

Posted
  • Author
Posted

I decided to go 9.5:1 (Custom CP's) instead of the standard 8.5:1 as I plan on using high octane fuel at all times and possibly E85 down the road. Even if I have to back off the timing a little it will still help having a little extra compression.

As far as the cams go, I have gone with Tomei Poncams and matched them with Tomei Valve Springs. Depends how much the car is used for everyday stuff where you want to eliminate noise and smooth drivability to some point.

I used ACL bearings all round and wouldn't even look at anything else.

i see, we are thinking on using the 8.5:1 and the car will probably only ever run on 98.... i have performance springs (brand name) and am yet to decide on cams the car will be driven almost daily.. and i am gonna go with the ACL bearings also which tomei pon cams do you have ?

Link to comment
https://www.sau.com.au/forums/topic/353651-rb2530-build/#findComment-5668179
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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      What brakes on R34 GTT(Europe)

      By GTSBoy · Posted

      I would just put EBC back on the "I would not use their stuff" pile and move on.
    • Duncan
      What brakes on R34 GTT(Europe)

      By Duncan · Posted

      Can I suggest you try EBC directly again and link them to as many competitor catalogues as you can to show their listing is incorrect, eg https://dba.com.au/product/front-4000-series-hd-brake-rotor-dba42304/ If you have access to an R33 GTST VIN and your VIN, you could also use a Nissan Parts lookup like Amayama to show them the part number is different between 33 GTST and 34 GTT which may get their attention
    • Kapr
      What brakes on R34 GTT(Europe)

      By Kapr · Posted

      So i got reply from EBC and they just this site where you can clearly see those 296mm fronts on R34 GTT. I send them photos and "quotes" that 296mm are not for 34 GTT and they are too small. But it will be very hard to return them cuz nobody here knows 100% and they just copy those EBC catalogue :-D https://ebcbrakesdirect.com/automotive/nissan/skyline-r34
    • 04-LOOX
      R34 GTR Vspec Garage Sale - All must go!

      By 04-LOOX · Posted

      Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
×
×
  • Create New...