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Best Rb25 Turbo Upgrade For Drifting

Cr@zY FreD

By Cr@zY FreD,
in Engines & Forced Induction

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Make sure you get a Genuine Garrett "-IW" internal gate rear housing - Not some cocked up/ported piece of shit.

That is where the boost control problems come from.

If it is not a 100% .63 Garrett -IW housing - do NOT buy it no matter what you are told.

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Dorigecko Proficient

Dorigecko

Posted
Posted

^^^ Necessary input. Lol. Nothing wrong with internal gate for those who like consistency.

Another turbo option to go for:

GT2871R. It's a garrett, but more closely related to an HKS. Bit small, but a lot quicker response. most that you'll find is .60 A/R compressor housing, but turbotech over here has one for about 1800 i think it was with a .76 somehow.

I'll keep a close eye on this thread. i'll be doing similar things with my engine.

Can't buy PFCs new anymore can you? Like, from a wholesaler? What'd be the other way to go? I'm sorry to succumb to shameless advertisement, but if haltech can produce enough cash to buy a R35GT-R as a promo car, they're obviously doing something right.

krzysiu Grand Master

krzysiu

Posted
Posted
You seem to want a low cost direct bolt on option

What i have learnt there is nothing that is 100% bolt on when it comes to turbo's, will always need some custom work. Had to make custom dump+front pipes along with a bunch of other stuff. Always have an extra 1-2 grand on top of what you expect it to be.

I would go the nismo 740cc injectors as the price different between them and the 555cc is under $100 for the set.

wolverine Grand Master

wolverine

Posted
Posted

Going for a GT3071 GT3076 etc with the Garrett turbine housing will require all those extra mods from oil & water lines, new dump, intake mods, heat shielding and the costs to get up when you go this way.

GCG hiflow bolts straight back on.

Hypergear has been working hard on making some of their turbos bolt on applications (with minor oil or water line mods?!)

HKS GT-RS bolts back on but with braided lines.

HKS GT2835ProS has a separate dump to the front pipe which may be an issue if you already have a 3" dump/front but otherwise the kit comes with all you need to bolt back on.

XRATED Veteran

XRATED

Posted
Posted

Have a look at precision turbo, in the US. They have plain and bb cores, not water cooled, v-band dump, billet comp wheels, 3inch or 4 inch inlet etc good pricing too.

I just bought a PTB5557... I think they're around 875is USD retail.

You'd need a custom oil line ($40), custom dump with a v band flange ( v-band flange and 2 mandrel bends, like $100 tops), 2" 90 degree silicone elbow ($40), 38mm external w/g ($240) and stock manifold mods ($150 odd).

Just another option...

J.

kwickr33 Community Regular

kwickr33

Posted
Posted (edited)
Make sure you get a Genuine Garrett "-IW" internal gate rear housing - Not some cocked up/ported piece of shit.

That is where the boost control problems come from.

If it is not a 100% .63 Garrett -IW housing - do NOT buy it no matter what you are told.

^^^^^

LOL and who told you they don't spike boost? My old supra had a GT3582R Turbo with the twin flappers on the back. spikes boost like f*ken spastic run 22psi with wastegate fully lose and no dump. Had to take it back to MTQs to machine out wastegate port and fit a bigger flappers. They are just piece of casted steel housing machined to shape like any one elses Nothing special at all and certainly do not help on boost control.

Edited by kwickr33
Cr@zY FreD Collaborator

Cr@zY FreD

Posted
  • Author
Posted
I'll keep a close eye on this thread. i'll be doing similar things with my engine.

Can't buy PFCs new anymore can you? Like, from a wholesaler? What'd be the other way to go? I'm sorry to succumb to shameless advertisement, but if haltech can produce enough cash to buy a R35GT-R as a promo car, they're obviously doing something right.

am probably gonna get the hypergear GT3071r, will post result once on and dynotuned

got my Power Fc off ebay for $1060, just jap still advertise them for $2000 brand new as well as Z32's for $299 new

kwickr33 Community Regular

kwickr33

Posted
Posted (edited)
Make sure you get a Genuine Garrett "-IW" internal gate rear housing - Not some cocked up/ported piece of shit.

That is where the boost control problems come from.

Was the topic at hand - the GT35?

No. It is a 3071 much different.

So keep your rather poor example, and lack of useful input, out of this topic.

No, just saying you are inputting information that you don't even know the nature of. reading some the rubbish you wrote makes me puke, and mislead other members.

I know your are the king of worriers at this keyboard world. This is just my 2cents

Edited by kwickr33
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

You are talking about a 700hp turbo & flow out the back, vs a 450-500hp turbo and the flow

They are not the same, and very different.

A Garrett IW rear end will easily flow a 450hp turbo's worth of air.

The GT35 IW is a different story, always has been a sticking point.

So - Sorry, but once again i must point out you are factually wrong about the GT3071 having problems with a IW rear.

Just because you had issues with a GT35, has little to no bearing on a much smaller turbo

discopotato03 Grand Master

discopotato03

Posted
Posted (edited)

A "GT2835R" IS a GT3071R , same family of turbine , same family compressor wheels .

The only reason HKS get this cartridge to work better than Garrett does is because they use GT30 based turbine housings in the six cylinder versions . If Garrett profiled their GT30 housings to suit the cropped GT30 turbine they would have a very useful unit .

A .

Edited by discopotato03
Dale FZ1 Veteran

Dale FZ1

Posted
Posted

Probably worth doing a search and checking out the experiences BHDave had with boost creep on a 3071 with 0.63 IW Garrett housing.

I agree with Wolverine's comments about the product Hypergear are putting out there. There are a few options that seem like they're close to a bolt-up, and at the price point well worth a go. Following the Hypergear thread there seems to be quite a few satisfied owners and reasonably serious efforts to provide after sales support. It'd be interesting to inspect the 0.63 housing they use for the 3071 spec, and to know exactly what cartridge is used ie. if it has the full size 60mm or cropped 56.5mm turbine rotor.

GT-RS would also be a tidy option at the targeted power/performance level if you could source something for a reasonable price.

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