Jump to content
SAU Community

Gt3040r On Rb25

Chris Wilson
 Share

Recommended Posts

Chris Wilson Proficient

Chris Wilson

Posted
Posted

GT3040R with .82 A/R on RB25 with mild Apexi hydraulic cams, big AFM, 550 injectors, stock throttle body arrangement, big FMIC, Power FC, fuel pump, rod bolts, 1.8 mm head gasket. What sort of flywheel BHP will this turbo efficiently support on cast iron HKS remote wastegate manifold? At the moment I am running 460 BHP at flywheel on Apexi cast iron single turbo, remote wastegate manifold with IHI RX-6 turbo (old Apexi RB25 kit). Will this be good for a bit more top end air fleo, yet still spool OK? Cheers.

Link to comment
https://www.sau.com.au/forums/topic/117287-gt3040r-on-rb25/
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

This BHP thing of you Pomps always confused me.

Whats that in RWHP or RWKW :unsure:

You can get approx 300rwkw (give or take) from the GT30.

It all depends on the spec mate.

If you search around you'll find there are many many many variants and you gotta be careful in your selection

Link to comment
https://www.sau.com.au/forums/topic/117287-gt3040r-on-rb25/#findComment-2156593
Share on other sites
Forged Experienced

Forged

Posted
Posted
This BHP thing of you Pomps always confused me.

Whats that in RWHP or RWKW :unsure:

You can get approx 300rwkw (give or take) from the GT30.

It all depends on the spec mate.

If you search around you'll find there are many many many variants and you gotta be careful in your selection

i estimate hes runing approx 247.45rwkw at the moment :D

Link to comment
https://www.sau.com.au/forums/topic/117287-gt3040r-on-rb25/#findComment-2156602
Share on other sites
Forged Experienced

Forged

Posted
Posted
think SK mentioned about 60kw lost in the drivetrain.. so thats 80HP ..

460BHP -80hp = 380rwhp

380rwhp is 283 rwkw ..

the 0.82 is a garret version, but yeah guess they have different compressor wheel trims etc

bhp is different to hp

1kw = approx 1.357bhp = 1.34hp :unsure: nothing important though

Link to comment
https://www.sau.com.au/forums/topic/117287-gt3040r-on-rb25/#findComment-2156613
Share on other sites
Chris Wilson Proficient

Chris Wilson

Posted
  • Author
Posted
This BHP thing of you Pomps always confused me.

Whats that in RWHP or RWKW :unsure:

You can get approx 300rwkw (give or take) from the GT30.

It all depends on the spec mate.

If you search around you'll find there are many many many variants and you gotta be careful in your selection

About 280 KW at the back wheels.

Link to comment
https://www.sau.com.au/forums/topic/117287-gt3040r-on-rb25/#findComment-2156623
Share on other sites
r33_racer Grand Master

r33_racer

Posted
Posted (edited)

i thought that generally 1lb of flow equals about 10 horsies...so if it flows about 65lbs then that would equate to roughly 650 hp... so wouldnt that be off in saying its rated at 550 but flows 65lbs? Or is it the compressor can flow that much, but the exhaust side restricts to that 550hp rating? Im guessing the latter question answer my original one?

Edited by r33_racer
Link to comment
https://www.sau.com.au/forums/topic/117287-gt3040r-on-rb25/#findComment-2156734
Share on other sites
Craved Grand Master

Craved

Posted
Posted
i thought that generally 1lb of flow equals about 10 horsies...so if it flows about 65lbs then that would equate to roughly 650 hp... so wouldnt that be off in saying its rated at 550 but flows 65lbs? Or is it the compressor can flow that much, but the exhaust side restricts to that 550hp rating? Im guessing the latter question answer my original one?

well just by looking at the extra 50hp rating with the only thing changing is the exhaust housing to the 1.06 AR

so yes the compressor is stated to flow 65lbs, regardless of the rear housing, but power will be affected by flow restrictions in the exhaust housing.

Link to comment
https://www.sau.com.au/forums/topic/117287-gt3040r-on-rb25/#findComment-2157944
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

    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • funkymonkey
      Jacks that fit under GTR lips that can reach the subframe?

      By funkymonkey · Posted

      I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
    • Duncan
      Mistakes were made, my R34 Story

      By Duncan · Posted

      You are all good then, I didn't realise the port was in a part you can (have!) remove. Just pull the broken part out, clean it and the threads should be fine. Yes, the whole point about remote mounting is it takes almost all of the vibration out via the flexible hose. You just need a convenient chassis point and a cable tie or 3.
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      ..this is the current state of that port. I appreciate the info help (and the link to the Earls thing @Duncan). Though going by that it seems like 1/4 then BSP'ing it and using a bush may work. I don't know where I'd be remote mounting the pressure sender... to... exactly. I assume the idea here is that any vibration is taken up by the semiflexible/flexible hose itself instead of it leveraging against the block directly. I want to believe a stronger, steel bush/adapter would work, but I don't know if that is engineeringly sound or just wishful thinking given the stupendous implications of a leak/failure in this spot. What are the real world risks of dissimilar metals here? It's a 6061 Aluminum block, and I'm talking brass or steel or SS adapters/things.
×
×
  • Create New...