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Results For 28rs On Rb20 Reults

quincy777

By quincy777,
in Engines & Forced Induction

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Chris32 Veteran

Chris32

Posted
Posted (edited)

I reckon it would make some good numbers with big'ish boost stuffed into it

One of these turbo's is on my short list, along with 2530,2535 etc so I want to get a idea what its like with a bit more boost! 20psi is about right I reckon, that way you get good value out of a turbo upgrade

If you could post a dyno that would be great!

Whats your boost level you have settled for Roy :P

Nice power levels too quincy :)

I have attached my last dyno sheet, I want to see how it compares to the 2510 running 1.5bar. I reckon this turbo would be great for drift

post-493-1130396621.jpg

Edited by Chris32
Roy Grand Master

Roy

Posted
Posted

Well, i have to check, what i thought was 17/18psi on recent track days where i was upping the rev limiter, may actually only be 13/14psi.

I want to be running 17/18psi with ocasional hits of 21psi...suppose i need to get my boost gauge hooked back up. I hope it wsa only 14/15psi that i was running That would mean i ran the times at Sandown and at the drags with only 215rwkws & 14/15psi

Roy Grand Master

Roy

Posted
Posted
I have attached my last dyno sheet, I want to see how it compares to the 2510 running 1.5bar. I reckon this turbo would be great for drift

When you said you picked up 40rwkws at 100km/h, are you coparing two dyno sheets both done in 3rd gear, or is that 4th gear witha sane rev limit?

Waldo Proficient

Waldo

Posted
Posted

i got my 32 tuned the other week, it pulled 175rwkw on 12psi and boost come on at around 4000rpm. my mods are:

tomei cams

high flowed non ball bearing turbo

gtr injectors

power fc

hks intercooler

3.5inch exhuast

splitfire coilpacks

bosch 040 fuel pump.

soon ill be swapping turboes and going a gt3071r

Dale FZ1 Veteran

Dale FZ1

Posted
Posted

Keep the thread on track please. GT2860RS on RB20.

Quincy what A/R turbine housing did you choose, and comments on the actual delivery too please!!

No doubt this will be a subject of interest to Discopotato03 and others.

Chris32 Veteran

Chris32

Posted
Posted
When you said you picked up 40rwkws at 100km/h, are you coparing two dyno sheets both done in 3rd gear, or is that 4th gear witha sane rev limit?

Same gear, in 4th. You can see how mine drops away power quick quickly after it makes max power. This dyno is done in 4th, you can see how I want more top end!

Very keen to see the results/specs of quincy's 2860 on the RB20 and how it compares to my dyno. Keen to look at other turbo options now

quincy777 Community Regular

quincy777

Posted
  • Author
Posted

I am going to stick with 16psi for now - just been stuffing around with it all for the past 3 months so want to keep it safe, very safe for the track.

Asked tuner (Ben) if it has any legs left - his response, "somewhere between another 5-10%" So yes can't wait for 20 odd psi when I could handle the risk of it being off the road again.

Dont have a camera at the moment to post up graph, but will ASAP.

Troy - I compared to yours when I had the 3071 couple of months ago, it is very similar to yours in mid range, comes on a little earier, and of course runs out earier.

Cheers

Cam

Roy Grand Master

Roy

Posted
Posted
Troy - I compared to yours when I had the 3071 couple of months ago, it is very similar to yours in mid range, comes on a little earier, and of course runs out earier.

Cheers

Cam

Good man Cam, that was going to be my homework asignment next time i was speaking to Ben. :)

So you are saying the 3071 came on earlier then my setup, but ran out earlier...or do you mean the 28RS :O

LOL..this is cool, another RB20 on the same dyno with the same good tuner. If there is a better setup out there then lets find it and all go and buy it :D

Chris32 Veteran

Chris32

Posted
Posted

Wise move running that boost if its going to be used on the track.

Sounds like a good turbo so far, looking forward to comparing dyno sheets and seeing where the 2860 makes power in relation to mine.

Good results so far

quincy777 Community Regular

quincy777

Posted
  • Author
Posted

3071 coming on earier, Ha ha.. Dog. And didn't run out of puff till 8500rpm. Not much good. So yep mean 28rs.

By the way exhaust housing has to be .64. .86 was laggy and yuk - even though it was advised to get .86 - definatly no good for rb20, must be .64.

Anyone wanting some great honest help should see Wayne at GT Auto in croydon - helped me with everything and he was great.

Good man Cam, that was going to be my homework asignment next time i was speaking to Ben.  :)

So you are saying the 3071 came on earlier then my setup, but ran out earlier...or do you mean the 28RS  :)

LOL..this is cool, another RB20 on the same dyno with the same good tuner. If there is a better setup out there then lets find it and all go and buy it :)

discopotato03 Grand Master

discopotato03

Posted
Posted

Yes interesting about the RB20 not having enough exhaust gas energy to cope with a .86 turbine housing . I guess the bottom line is that its not possible to have the broad flat torque line with 330 cc cylinders . SK did once say in an RB20 vs SR20 "debate" that the RB's advantage was that it could rev and so make the numbers .

With the GT28RS .64 ARR hitting full boost at 3700 rpm it would be interesting to see what raised compression ratios could do before detonation became an issue .

Another thing worth looking into is the GTS-R exhaust manifold , I'm not sure if the std 20/25 exhaust manifold is the same but if it is there could be some small gains in getting the gas speed right here . I think Joels 30DET Pdf shows some pics of RB20 ports but can't remember if the exhaust side are smaller than 25DET .

Does anyone know if the factory did anything significant with the last of the RB20DET's ie R34 if there was such a thing ? If there is an RB20 Neo there's a fair chance Nissan was eager to get the most out of 2L so better manifolds or whatever may be available .

Cheers A .

Cubes Grand Master

Cubes

Posted
Posted (edited)

The Rb20/25 exh. ports are the same size, only differece between the two is the rb20 valves are 'slightly' smaller. Nothing like the size difference between the inlet valves, the 20's inlet valves look like baby's compared to the rb25's.

Edited by Cubes

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