R32 Gtr And Small Single Turbo (sst) Upgrade

[Lithium]

How different would the results really be from an Rb25?? I'm going to be playing with an RB25DET Neo Powered R32 GTS4 soon, will be getting either a GT3076R, GTX3076R or T67-25G ... depending on where the owner goes with that. I'm quite interested to see how that goes.

[paulr33]

a fair bit different one would expect

front plenum

less pipework

multiple throttle bodies

bigger displacement

possibly different head (dont know enough on 25 vs 26)

[Nee-san]

Yes to above on all counts

[Beer Baron]

blast from the past. I never did it but the idea still hangs with me. I might do it one day. thinking about a small-ish borg warner EFR TS/twin gate set-up. could be nice.

since this thread I built my GTR with GTSS, another one with 2530s, and yet another one with 2530s so still rocking twins. current GTR is jun 2.7 engine with 2530s but thinking about putting it onto E85 now and wind up the wick a bit.

[Whiskey Ghost]

Hey there,

New to the forum and wanted some advice on SST upgrade for R32 GTR.

Built motor (rods/pistons/cams/cam gears all the usual stuff)

Basically just looking for response (only 260 poncams)

What's your opinions on HKS 3037?

Cheers

[DR 32R]

Looking at the rb25 sticky, the hks 3037 is making 280-300kw, is that acceptable? A built rb26 is probably better than the rb25s in the sticky thread. There are established good response, better power twin low mounts, set ups well described. I like the simplicity of a single setup.

Edited May 25, 2011 by WHITE gtt

[wrxkilla]

Hey Rich,

My GTR initially had an Apexi IHI RX-6 TCW77P25. Stock RB26 with a couple of cams. Little baby, could only make 400hp atw no matter how much boost I threw at it. left it on 19psi, super responsive, full boost well under 4k ran heaps of mid 11s at the drags. (ps if anyone wants it - it's sat in the garage at home with manifold, wastegate setup etc). Upgraded to a GT35R and overcame the tempation to go to the T04z and the like. Useable power > *

A new GTX3076 or whatever they are would be wicked.

Mick

[Whiskey Ghost]

Looking at the rb25 sticky, the hks 3037 is making 280-300kw, is that acceptable? A built rb26 is probably better than the rb25s in the sticky thread. There are established good response, better power twin low mounts, set ups well described. I like the simplicity of a single setup.

still getting used to posting and such. Sorry about that.

Yeh 300kw would be acceptable. Just looking for a nice responsive thing that you don't have to wring its neck evrerywhere

Edited May 25, 2011 by Whiskey Ghost

[DR 32R]

Sounds like you ought to try the hks3037 then.

[Whiskey Ghost]

Yeh sounds like the go for me

[Whiskey Ghost]

Yeh sounds like the go for me. Cheers

[Adriano]

Then tune it with e85, what compression are you running?

[Whiskey Ghost]

Yeh sounds like the go for me. Cheers

[Whiskey Ghost]

Running 9:1 comp. Running E85 what size injectors would be needed for approx 20psi?

[jnr bonn]

Hey guys, been doing some reading and found this old old post.

Can't find to much more on the subject.

I am currently setting up a small turbo on my r32 gtr, after putting n1 turbos on and hating them I decided I was never going through the twin turbo shit fight again, and I couldn't see why one turbo, wouldn't spool up better than two that are similar size combined, you have less mass to turn, in one turbo, and less bearings, less friction, maybe I'm wrong, but I couldn't find a straight answer anywhere so I decided I needed to do it myself.

I have a STD engine so won't be chasing big power, so I decided I would go for response instead, I have a very low budget and have done all the work myself.

The turbo I chose was a kinugawa tdo6sl2-20g ($1000)

This is t3, internally gated and has a 8cm rear housing. It came with all the gaskets and hoses I needed to fit it to the engine, didn't have to buy another thing in that area. Have heard alot about these turbos and really wanted to give one a go.

This is bolted to a ebay manifold ($350), and did some custom intake piping from some silicone joiners off eBay and some alloy pipe laying around at home ($50)

For the dump pipe, I used 3 inch flexible stainless truck exhaust ($60), down to the cat, this is welded onto a vband flange which came with the turbo

I know some of you would be cringing by now at this set up, but I'm into trying somthing Different.

I brought a second hand adaptronic e1280s off my mate for $500 and wired in a map sensor ($60)

The set up hasn't run yet, just in the final stages of setting up the adaptronic, I have heard of people making 300kw with these turbos on sr20s and rb25s, so I don't see why the 26 won't do it, and it should have very little lag which will make it awesome to drive and look after my STD engine, not having to rev it hard to get ssomewhere.

Or it might just not work... Haha we'll soon find out.

Let me know your thoughts guys

[GTR_JOEY]

Would be good to see a N1 vs small single comparison..

Where the N1s dynoed?

[Ben C34]

Interesting approach.

Looking forward to the results .

[Piggaz]

What N1's were they?

[jnr bonn]

They were r34 gtr n1s

Were never dynoed, they would have been alot better if tuned properly and stuff but I just wanted single for the ease of working on the car.

The n1s got on boost at about 4-4500 which I was not stoked with.

[hypergear]

I've done a number of tests based on small singles fitted to a unopened GTR engine. You can find more details on my thread.

Be brief. I've fitted one of my TD06SL205 Turbocharger on my GTR externally gated in 10cm rear. It runs off a TD06L2 turbine, with a compressor that is15% more efficient then a standard 20G without adding lag. This is a proven turbocharger working with SR20 and Rb25 engines.

On Rb26, because the head flows so well, the extra rev and engine capacity, this turbo can not keep up with set boost once the engines revs over 5000RPM. Stronger external gate spring only caused higher boost spike in mid range while made no changes up top. Been the Kando's standard TD06L2-20G, your boost tapper should be even worse.



Best power was 308awkws pump 98 fuel, Vs factory Twin T25s

On E85 the best run was 367awkws, and averaging of 350rwkws.

Goal was responsive 400awkws, data from the following evaluations shown that I could never get that. Lead me thinking twice of why Nissan have chosen to twin turbocharge this engine.

Anyway, I don't usually stop till I get there, so scraped every thing I knew about Rb25det and start fresh, many weeks of modeling, testing and $$$$$ later (Check details on my thread), it worked.

ATR45SAT / AKA ATR43G4/SAT. 411awkws @ 24psi, E85 Fuel

Power and Response Vs Stock T25s

This turbocharger has been left on my car since.

Ps. It doesn't cost much more then what you've paid. List your TD0620G back on Ebay and fit this instead.