Built 26, Best Single/mani Combo For Around 370Kws ?

[bri73y]

Guys,

About to build another track car and want to go down a different route to my current R32.

This one will be a rear wheel drive GTT with an RB26 in it.

I'm looking for a single turbo/manifold combo that will net around 370kws.

Motor will be kept pretty simple with a built bottom end, drop in poncams, very little headwork, running on E85.

Looking for 20psi by say 4000rpm.

Give me your thoughts please.

Edited May 8, 2012 by bri73y

[34GeeTeeTee]

Just so something similar to mine (See below) with a built engine and decent boost it should be fine and response will be exactly what your after..... BUT depends what you want to spend

[Lithium]

This one will be a rear wheel drive GTT with an RB in it.

I'm looking for a single turbo/manifold combo that will net around 370kws.

Motor will be kept pretty simple with a built bottom end, drop in poncams, very little headwork, running on E85.

Looking for 20psi by say 4000rpm.

If I were building exactly the same thing, going by the things I've seen out and about these days - I'd go for a single entry FP GT3076R HTA with .82a/r hot side on a 6boost manifold.

There should be no surprises, its based on the existing Garrett GT30 platform which is long proven to be reliable, and has a better matched compressor on it that the "normal" out going 56 trim GT3076R (let alone the GTX3076R) while also providing a higher flow rate. The combination has been around for a number of years now, proven to "make the numbers", and there is no debate that they actually spool and respond quicker than the normal GT3076R (which would already be a reasonable option to consider). Realistically you'd be looking at more power than GT3076R while being closer in spool and transient response to the smaller GT3071R.

http://store.forcedp...TGT3076HTA.html

I'd say your 370kw on E85, and 20psi by 4000rpm should be pretty achieveable with that combination - potentially with change.

[TiTAN]

otherwise a gt3582 with 0.82 rear is guaranteed to make the numbers but expect full boost around 4000-4500

[34GeeTeeTee]

The FP turbos do look like an awesome option!!!

Why the 370rwkw target?

EDIT - Ohhhhhhhhhhhhh it says RB26 now................. Ill shuddup then lol

[bri73y]

If I were building exactly the same thing, going by the things I've seen out and about these days - I'd go for a single entry FP GT3076R HTA with .82a/r hot side on a 6boost manifold.

There should be no surprises, its based on the existing Garrett GT30 platform which is long proven to be reliable, and has a better matched compressor on it that the "normal" out going 56 trim GT3076R (let alone the GTX3076R) while also providing a higher flow rate. The combination has been around for a number of years now, proven to "make the numbers", and there is no debate that they actually spool and respond quicker than the normal GT3076R (which would already be a reasonable option to consider) but probably closer in spool and response to the smaller GT3071R while making more power.

http://store.forcedp...TGT3076HTA.html

I'd say your 370kw on E85, and 20psi by 4000rpm should be pretty achieveable with that combination - potentially with change.

Thanks, sounds on the money.

The FP turbos do look like an awesome option!!!

Why the 370rwkw target?

370kw + 1150kg or thereabouts will net a reasonably quick track car that shouldn't break too many things by being overpowered/stressed.

Not only that but this car will be rwd so I want good linear power that doesn't create too many drivability/traction issues.

I've learnt the hard way that the more you push the power the more you have to upgrade/fix, I don't want to have to do that with this car.

Anyone have a cheap alternative to the FP ??

[DVS JEZ]

Precision turbo. Im going to try a 6262 and hoping to have a fair amount of response. Otherwise a slightly smaller size may be best

[Lithium]

How much are you willing to compromise cheap vs performance?

There are cheaper turbos than the HTA which may perform in a similar territory, though they rely on twin scroll partly to boost natural torque and exhaust efficiency to get the "wider" performance - ie, something like a Holset HX35.

Alternatively, there is the Kando Dynamics T67 turbo SimonR32 uses on his R32 which will also make the power, but is likely to introduce more lag (though to be fair, an RB26 in a car weighing 1150kg will probably cover that up) than the other options I mentioned and probably have a "snappier" nature, 20psi @ 4000rpm possible but I wouldn't want to guarantee it.

Any of the options mentioned will get you in the territory of 370kw and 20psi by 4000rpm, GT3582R being most likely to fall short of your response requirements but more than capable of the power, GT3076R working hardest to reach the target power but one of the most responsive.

[Lithium]

Precision turbo. Im going to try a 6262 and hoping to have a fair amount of response. Otherwise a slightly smaller size may be best

PT6262 would be epic lols on a RB26 track car on E85, though not so sure its what he's looking at. Probably 4500+rpm for full boost, but potential for >450kw would be amusing in an 1150kg RWD track car hahahah

[bradsm87]

If you're running E85, I'd run no less than 10:1 compression pistons and go with a BorgWarner EFR 8374 .92.

[DVS JEZ]

Hell yeah it would be fun. Sorry i thought his was a GTR. I missed the GTT part

[34GeeTeeTee]

Hell yeah it would be fun. Sorry i thought his was a GTR. I missed the GTT part

I did the opposite in the first post, i originally saw GTT but there was no RB26..... So my posts are useless (As usual)

[bri73y]

If you're running E85, I'd run no less than 10:1 compression pistons and go with a BorgWarner EFR 8374 .92.

I've been down the EFR road, and for some strange reason,........I think I'll try a different road this time......

Thanks for your input so far guys, most appreciated!

[bri73y]

How much are you willing to compromise cheap vs performance?

There are cheaper turbos than the HTA which may perform in a similar territory, though they rely on twin scroll partly to boost natural torque and exhaust efficiency to get the "wider" performance - ie, something like a Holset HX35.

Alternatively, there is the Kando Dynamics T67 turbo SimonR32 uses on his R32 which will also make the power, but is likely to introduce more lag (though to be fair, an RB26 in a car weighing 1150kg will probably cover that up) than the other options I mentioned and probably have a "snappier" nature, 20psi @ 4000rpm possible but I wouldn't want to guarantee it.

Any of the options mentioned will get you in the territory of 370kw and 20psi by 4000rpm, GT3582R being most likely to fall short of your response requirements but more than capable of the power, GT3076R working hardest to reach the target power but one of the most responsive.

I was budgeting (because this is a budget build, spent all my money on my bloody R32) on about $2000 for Turbo and Manifold if possible.

[TiTAN]

you arent going to get a garrett turbo and a manifold for 2k, 2.5-3k will get you a 6boost/ETM manifold and a gt35 but the GT30's are more expensive than the GT35's, unless you can get someone elses setup 2nd hand.

a racecar on a budget is going to break things, cheap stainless manifolds expect them to warp and crack, cheap nasty turbos, expect them to be extra laggy and or blow up.

[R31Nismoid]

I've been down the EFR road, and for some strange reason,........I think I'll try a different road this time......

Thanks for your input so far guys, most appreciated!

Hehe i knew that reply was coming

GT3076 on E85 has been proven to around 330-340rwkw on E85 or the HTA variant for something better again

[JH32]

you arent going to get a garrett turbo and a manifold for 2k, 2.5-3k will get you a 6boost/ETM manifold and a gt35 but the GT30's are more expensive than the GT35's, unless you can get someone elses setup 2nd hand.

a racecar on a budget is going to break things, cheap stainless manifolds expect them to warp and crack, cheap nasty turbos, expect them to be extra laggy and or blow up.

Do most people buy their GT3582s from GCG? There are so many GT35Rs out there - hard to know where to buy the best option from!

[GTScotT]

+1 vote for 3076HTA

I'm salivating for one myself

[bradsm87]

A GT30 turbine wheel at 350rwkw would be choking like all hell. I'd go a GTX3576R with a T3 divided 1.06 housing if you're not keen to go down the BW path (again).

[SimonR32]

I run a standard RB25 with the Kinugawa T67-25g 10cm that make 360rwkw and does regular track work and it fits all your criteria. 20psi well before 4000rpm, near enough to the power you're asking and it's cheap $750 delivered plus a $1200 decent manifold.

Your other options are a GT3076R which will be a tiny bit better spool and a tiny bit less top end for an extra $1000 or maybe a bastardised version of one for similar price.