R32 Gtr And Small Single Turbo (sst) Upgrade

[raz0r$harP.UK]

what about a T78-33D? or are they borderline BFOT?

I'd say a T78 is pretty much BFOT territory, similar to T04Z - and aren't you trying to get around that?

If you're looking down the Trust path, TD-07S is smaller.

So is it still SST, or are you thinking of something a bit larger?

[Blitz]

I'd say a T78 is pretty much BFOT territory, similar to T04Z - and aren't you trying to get around that?

If you're looking down the Trust path, TD-07S is smaller.

So is it still SST, or are you thinking of something a bit larger?

I would like to see the results of an HKS T04Z with the .61 rear used on a standard displacement RB26

[Steve]

would go quite well no doubt.

I was running 3037s56t on rb25, it was nuts, made well over 300rwkw, made strong boost under 4k rpm - and not one garrett name brand came anywhere near the sort of response/power I was making - infact I have never seen a garrett generic turbo make near the same power/response/toque/spool as the HKS did. (but that is a different topic.

On RB26, no doubt the 3037 would be a very sweet thing indeed.

[Sydneykid]

for the twin set-up I want I'd need:

HKS 2530s

for SST

HKS 3037

Not a good comparison, 2530's would get you up around 400 rwkw (not 300 rwkw). I think 2510's would be a better choice if 300 rwkw is your target. But having driven several GTR's with 2530's they would be my choice with around 350 4wkw. They make a NICE circuit car, perhaps why the Mines R34GTR has 2530's on it, as does the re-released Nismo R32 Ztune.

cheers

[Sydneykid]

I was running 3037s56t on rb25, it was nuts, made well over 300rwkw, made strong boost under 4k rpm - and not one garrett name brand came anywhere near the sort of response/power I was making - infact I have never seen a garrett generic turbo make near the same power/response/toque/spool as the HKS did.

You haven't looked hard enough, GCG supplied GT3040 = 325 rwkw with 1 bar at 3,750 rpm. It's all in the tuning, spend $200 extra on that and save $1K on the turbo

cheers

[Morgs]

700HP-GTR33 I certainly hope you're kidding around because thats a ridiculous suggestion that unless they have 2 turbos, a GTR is not a GTR!!

Have a look next track day and see how (especially a certain) big single GTRs go. The days of useless BFOTs has passed, there is absolutely no reason a single can't do what twins do.

Back on topic T78 is way too BFOT, T04Z is awesome in comparison, 500rwhp @ 19psi with delivery by 4500rpm not being strictly on/off either, with the .81 rear. I'd track back towards something like a GT3037, GT3040 for the lower power level.

[Steve]

yes, well my car was tuned at the same place other guys had their gt30s done - does this mean I could have had alot more than 321? most likely, a japanese mech seemed to think it was a bit low...

would love to see a dyno graph for this gt3040, sounds like it worked unusually well, as there was another guy on here who fitted one (gcg) and he hated the thing - ended up going hks 3040 and fell in love.

[Blitz]

As Gary mentioned, for 300rwkw on a twin setup,you want the most efficient turbos you can find so you would either search for a set of HKS GT2510's, or for the newer option, GT-SS's.

Both will comfortably reach the power goal and its already a well known fact that for response, its hard to go past GT-SS's, especially at ~$3,000 for a complete kit (Half the cost of the proposed SST setup!)

[gun32gtr]

excuse my ignorance but could someone explain wot BFOT is please.. dont mean to sound stupid but never heard

[Morgs]

(B)ig (F)uck (O)ff (T)urbo, also use FOT

[gun32gtr]

thanks mate...

[R31Nismoid]

The 2510's were a horrid setup from what ive been told by many people.

Not a very good turbo at all.

The GT-SS is much nicer in terms of its design.

[GTR-Ben]

Speaking of the GT-SS Turbo.

My friend just bought a turbo and was told it was HKS GT-SS turbo.

It only has Garrett written on the housing but I don't recall if HKS actually put their name on all HKS turbos?

The core has this written on it:

HJ 0188J

GT S

472560-14

Can anyone confirm?

Edited October 24, 2006 by GTR-Ben

[R31Nismoid]

There is a thread with the details somewhere, but GT-SS dont have HKS markings, only Garrett... save for the actuator which has a black HKS sticker on it

[Beer Baron]

thanks for the input. good to get the SAU brains trust on this one.

nick, you are right, HKS GT-SS are the proven option and very good value at $3K, but you do need to factor in twin dumps and front pipes which would be much cheaper on the SST set-up with just one simple dump, and one simple front pipe.

Gary, I hear you on the 2530s too. They would be my other choice I think.

Morgs, I will heed that advice and put the T78 in the BFOT bag. but definately considering one of the small T04Zs.

What housing A/Rs do they come in (both ex and comp).

Something around .81 rear and a .60 front could be good depending on physical size/wheel size/trim. Should be good for 350rwkw and hopefully full boost before 4000rpm. basically whatever turbo I end up with I'd want the wastegate (s) cracked open before 4000. otherwise it's not really going to do it for me on street or track for that matter.

[N1GTR]

I would like to see the results of an HKS T04Z with the .61 rear used on a standard displacement RB26

Speak to Dave (T04GTR) about his

Its a bit laggy, but the top end is quite a rush

[Roy]

Someone lock this thread....too may good ideas floating around.

Does anyone know the details of the IHI turbos the Z-Tune uses?

If its a track car, then i say stick with low mount twins and std manifolds and heat shields. Controlling the heat with a single and tubular manifold is a bitch on the track. And the heat from a little RB20 setup is going to be less then 300-330rwkws.

Agreed, Fernis cars is pretty damn impressive. I mean its pretty damn impressive

[Beer Baron]

If its a track car, then i say stick with low mount twins and std manifolds and heat shields. Controlling the heat with a single and tubular manifold is a bitch on the track. And the heat from a little RB20 setup is going to be less then 300-330rwkws.

that is a good point. heat will definately be a problem. but damn we love the gate. and i know you do too.

[Roy]

that is a good point. heat will definately be a problem. but damn we love the gate. and i know you do too.

Yeh new engine will have gate...though with the change to a smaller turbo and more displacement you might get too much gate and need to plumb it back

[Beer Baron]

no such thing troy. worst case senario is maybe stick a motorbike muffler on the screamer