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Single Turbo Setup Questions?

paul f

By paul f,
in Engines & Forced Induction

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paul f Enthusiast

paul f

Posted
Posted (edited)

alright, i realized twin turbo setup is not for me or my apllication, im gonna go with a nice size single turbo setup. now im not looking to make more than 450hp to the wheels but i need amazing response like boost at 2800rpm and up making a very nice smooth boost curve. Im going to run a twin scroll manifold with a full T4 60-1 turbo now would this allow me to run a very nice spool and great response?

also what do i do with all the factory coolant/oil lines to the stock turbo? my new setup only requires one oil feed and one oil return.

what is the fitting that i would need to go from the block to an -4an fitting to supply oil to my turbo

what oil return do i use? can i use either the stock front/rear turbo return spots?

where can i get the intake turbo pipe that splits to a "Y" shap to run twin mafs? or is this a custom peice?

oh and the only mods im gonna do is cometic metal headgasket,adj. camsprockets and front mount intercooler

thanks all in advance,

paul F.

Edited by paul f
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discopotato03 Grand Master

discopotato03

Posted
Posted

You can get a T04/60-1 Garrett ball bearing turbo - I think they call them T4R . They are almost identical to A T04Z except they use a T04S 60-1 compressor pn 409535-1 . Can use all the same turbine housings and comes with the same T04S 0.70 A/R compressor housing .

Personally I think for the power this turbo is overkill , the real Garrett GT3071R in twin scroll form can do 440 and if in the US talk to FullRace Motorsport . You may want to look into head work and cams for an SR20/KA24 because the turbo may not do so well on a mechanically std engine .

BTW both the T04S 60-1 compressor and P trim turbine are hardly modern technology and you can do better .

Cheers a .

paul f Enthusiast

paul f

Posted
  • Author
Posted

ok specs ar 4inch inlet 2.5 outlet .60ar cold side, and .80 hot side 3inch outlet and its a wet float bearing im looking for around 450hp but i would like boost to come in as fast as possiable i have a wideband and am going to tune with an safc neo to help the fuel curve a little too! im not looking for something amazing but with decent power but amazing responsise! what ya think?

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Mate its going to take far more than a SAFC to make the results youre after

Agreed.

450rwhp/330rwkw

Response around 2800rpm

Only S-AFC to tune

Its all things that just are not fitting together and simply put, will not give you what you want.

If you was blistering response. You'd need a GT30, and that will limit the power to around 300rwkw at best.

You really need a PowerFC, or some kind of decent management.

Also a forged bottom end. You want to drift it and give it a flogging, no stock RB26 will take that with 300rwkw. It will for a while, but it will die.

zebra Grand Master

zebra

Posted
Posted

I dont even reckon a GT30 would come on that low.

Standard RB26s dont come on hard till 3500rpm.

I also agree with Nismoid. 300rwkw, constant 8000rpm and standard bottom end will go bang no matter what motor it is

espessially if you try and tune it with a S-AFC

Its not school holidays in the US is it?

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