Jump to content
SAU Community

Whats The Best Pistons And Rods To Use For Rb 25/30 Conversion

lcxu105

By lcxu105,
in Engines & Forced Induction

 Share

Recommended Posts

lcxu105 Proficient

lcxu105

Posted
Posted

Hi all just wanted to know what rods and pistons everyone is using and what power level they are making to decide what to use for my own set up. Will be using a 25 neo head that has been ported and currently makes 381 hp on a rb25 neo engine with 14psi of boost from the std factory turbo and factory inlet. When i build the new engine it will run a custom hi-mount exhaust manifold and Greedy inlet manifold on 18psi boost.

Thanks Dave

Adriano Grand Master

Adriano

Posted
Posted (edited)

500hp? You can do it with stock internals, pretty much any aftermarket pistons and rods will be up to the task(Just remember you need different pistons for a neo 25/30 to a normal 25/30) I used ACl VL flat top rb30 forged pistons for the last neo30 build, cant remember what the CR ended up, but around 8.8:1 from memory.

Edited by Adriano
lcxu105 Proficient

lcxu105

Posted
  • Author
Posted

did some serching on the net and from what i have found, CP pistons and just about any h beam rod with good rod bolts and some quality berring will do the job just fine. So what would be an ideal C/R 8-5-1, 9-1 ???

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Stock rods with better bolts will be fine for will be fine for 500hp but if you are planning on 800hp down the track may as well go fully forged and balanced. You want the higher CR but be careful... the CP 9:1 pistons will give you a much higher CR with the Neo head so you may want to get the nominal 8.5:1 pistons for your car.

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

    • Duncan
      M35 Brake caliper replacement

      By Duncan · Posted

      You can use your VIN to look up the factory part number somewhere like amayama, and then look to order new if necessary. https://www.amayama.com/en/genuine-catalogs/nissan Depending on price you might want to rebuild instead. @GTSBoy I had an interesting insight into US market parts when the Titan rear calipers were sticking. New calipers were dirt cheap, about 20% more than a rebuild kit....they are just considered throw away maintenance items
    • Duncan
      Most women will agree that parking is the most taxing part of driving

      By Duncan · Posted

      Funny, but really not funny. Thank god (most) f the world has moved on since then
    • Duncan
      Jacks that fit under GTR lips that can reach the subframe?

      By Duncan · Posted

      Lots of votes for driving onto a plank first; that is the quickest way I've found, 25mm is enough for my case but that will vary by car It also depends where you are going for. On the 32 I can get to the rear diff with my floor jack if I do that end first, and get it up on stands. Then I lift the front from either front tow hook as high as needed, also onto stands. Sometimes I need a small lift on the other tow hook to get it level enough If I do the front first I can't get to the rear diff because of the angle of the car Other options are getting to the front mount of the rear subframe from in front of the wheel (if only lifting one side, or just do both which is a bit of a pain compared to one lift from the diff), or also the gearbox cross member mount on the driver's side if you are  just trying to lift the driver's side. I This is the jack I use; it says 75mm clearance but of course that is only on the lower section so if you have to reach too far in like the diff you still get stuck. https://www.snapon-bluepoint.com.sg/category/Floor-Jacks/product/Floor-Jack,-2-Ton-Low-Profile
    • Duncan
      NC MX5

      By Duncan · Posted

      On the bright side, the weather will turn much nicer for working outside shortly....sounds like you might need to start on a neighbour's garden next
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      Ok so i will NEED to have this sensor anyway even with Nistune (or standalone ECU) https://justjap.com/products/genuine-nissan-boost-pressure-sensor-evap-control-system-fits-nissan-r34-skyline-c34-nm35-stagea-pnt30-x-trail-rb25det-vq25det-sr20vet?currency=AUD&srsltid=AfmBOoqfxX48bW9bEwH62orcNhtBfp7ekAL0C9Ca89ySFGUiBzXfXeze Is this the correct one? And this is only thing i need? No other "things" connected to the sensor or something? I do have the wiring.
×
×
  • Create New...