PDA

View Full Version : A Challenge...


steve shadows
02-11-2008, 01:56 PM
What is the difference between a

"GT28RS"

and

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2871R_472560_15.htm

I am getting sick of everyone using the wrong nomenclature and using trendy names instead of trim specs.

http://www.hksusa.com/products/?id=1672

btw HoneyWell Garrett MAKES HKS's turbo for them.

I'm just curious here.

the CHRA is what should name the turbo. Not the housing sizes.

ps. I hate disco potatos

they are simply a gt28R turbine wheel (same as 2871R) with a LESS efficent compressor wheel bolted to the front....

s13.dark1
02-11-2008, 08:11 PM
did u just answer ur own question or is there more to it?

bejota180sx
02-11-2008, 08:37 PM
isnt gt28rs a disco potato?

McRussellPants
02-11-2008, 08:41 PM
what did you think would come of this thread?

a well witten coherant answer?

I'd rather people call it the GT28RS than a disco potato anyway.

discopotato is ultimate in douchebag marketing ploy.

eastcoastS14
02-11-2008, 08:45 PM
lol disco potato?

http://i176.photobucket.com/albums/w166/maxlopes/discopotato.jpg

like anything else with cars it gets said a few times in a magazine and suddenly everyone is saying it

sleepy_s13
02-11-2008, 08:48 PM
^^^^lol, nice............

bbejj123
02-11-2008, 08:59 PM
lol disco potato?

http://i176.photobucket.com/albums/w166/maxlopes/discopotato.jpg

like anything else with cars it gets said a few times in a magazine and suddenly everyone is saying it

looks like someone dropped a deuce on this guys head haha

ericcastro
02-11-2008, 09:14 PM
the wrong nomenclature


http://feralboy.com/log/images/walter.jpg

LMAO, sorry. just makes me think of Walter! :bigok:

Kn1ves
02-11-2008, 09:20 PM
http://www.gameguru.in/images/jerry-seinfeld.jpg

"And whats the deal... with NICO? I mean seriously?"

PoorMans180SX
02-11-2008, 09:30 PM
HKS's website indicates a .1mm bigger exducer on the compressor wheel. Maybe a slightly closer tolerance to the compressor housing? Or just an error.

But, HKS turbos have inconel turbine wheels. I thought that was the difference between HKS and one from Garrett, and the fact that they come with an HKS wastegate actuator. But I could be wrong.

And I thought HKS just named their turbo the GT-RS just to name it something other than what Garrett calls it.

kandyflip445
02-12-2008, 12:17 AM
HAHA, wasn't it SCC magazine that dubbed the damn thing that? Now the magazine is in the toilet and about to go under? (it may or may not be, but judging by the size of the issues, I'd say they are)

steve shadows
02-12-2008, 12:21 PM
what did you think would come of this thread?

a well witten coherant answer?

I'd rather people call it the GT28RS than a disco potato anyway.

discopotato is ultimate in douchebag marketing ploy.

a "disco potato" is not a GT28RS

a GT28RS is a GT2871R with smaller housings

a "disco potato" is a GT28R Turbine wheel and housing with a Super 60 (antiquated 35 year old) compressor wheel (T3)

Hence this thread to educate people like you about things like this.

!Zar!
02-12-2008, 12:36 PM
gt2871r can built more top end power than a gt28rs

But then I'm not quite sure if I get the question.

steve shadows
02-12-2008, 12:38 PM
Its The Same Turbo

Tell me how that is possible

!Zar!
02-12-2008, 12:42 PM
Demonic hamster magic?

Now I'm interested myself.

steve shadows
02-12-2008, 12:44 PM
Thats why I titled it the challenge.

They are the same.

The GTRS is just some stupid lingo drempt up to get shops more profit on the same exact turbo with slightly marginally different housings.

i need tires
02-12-2008, 12:54 PM
Thats why I titled it the challenge.

They are the same.

The GTRS is just some stupid lingo drempt up to get shops more profit on the same exact turbo with slightly marginally different housings.


when i hear disco potato... the price usually goes down...

when i hear gt2871 the price goes up.

steve shadows
02-12-2008, 01:40 PM
Disco Poato is cheaper because if would have read any of my posts in this thread you would see - they use a Super 60 T3 style Compressor wheel.

not the new technology that Garrett has hashed out in the recent decades using the GT series line up.

So it should be cheaper, substantially.

An S15 turbo in my boost is better than a disco potato. It makes as much rwtrq, with marginally less peak output.

johngriff
02-12-2008, 01:42 PM
Dont hate on my compressor wheel! I'll kill you!

KA-T_240
02-12-2008, 01:51 PM
a GT28RS is a GT2871R with smaller housings

Hence this thread to educate people like you about things like this.


Its more then the housings. They both have differant part numbers for the CHRA:

The GT2871R also lists 3 differant CHRA part numbers, all have differant Ind. Wheel Diameters. And differant housings. The link below makes it a bit easier to compair turbos.


http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/turbo_comparison_sheet.htm



Also on turbos, If you guys want a GT3076R and GT3071R, you better buy fast from people that have them in stock. the price on the exhaust housings(garrett housings) went up $226.XX in the last month at my costs. Meaning, I can sell the GT35R for cheaper then the 30R turboes.

I would assume Garrett/Honeywell makes only the CHRA for HKS. Also, where did you find this out?

steve shadows
02-12-2008, 03:29 PM
Yeah I noticed that too.

But if the whool size is the same overall then the inducer is the only difference in CHRA?

Thats the challenge. I want this clarified.

Dont hate on my compressor wheel! I'll kill you!

How am I? Your setup is like 1/2 as expensive and better matched to your engine.

haha It's a compliment

KA-T_240
02-12-2008, 03:37 PM
If you pay for them, I will order in one of each and get down to the nitty gritty and take lots of detailed photos and measurments!


Wait, whats a Whool?

Slow Poke
02-12-2008, 03:46 PM
Sorry I only skimmed through the thread and gotta run but I just wanted to say that the 28rs and 2871r are not the same. And even if turbos had the same chra there is no good reason why we should ignore the housings and give them the same name. Housing are very important as well. I'm not sure what you are trying to get from this thread? If you call Garrett they are usually more then happy to explain any differences in turbos.

And Garrett only produces the HKS CHRA's not the housings. Also there to HKS spec and NOT Garrett's.

steve shadows
02-12-2008, 04:01 PM
So spill the beans how are the WHEELS on the "GTRS" and the GT2871R

different?

What are you holding back?

KA-T_240
02-12-2008, 04:07 PM
What is to say that they are the same?

steve shadows
02-12-2008, 04:15 PM
Did you read my OP

Compare the Diameters, Trims of both wheels and other data provided.

Both on garrett's website and elsware.

My point is there is no such thing as a "GTRS"

and the GT2860RS is not the "GTRS" everyone is talking about

The gt2860RS is a GT28R with a Super 60 wheel aka the disco potato

the "GTRS" is in fact the GT2871R with T25 Housings.

KA-T_240
02-12-2008, 04:23 PM
Yes, just because it is the same size and the same trim doesnt mean its the same.

The shape and curves on the fins of the turbo could be differant, one could have more fins.......

HellonFire
02-12-2008, 04:24 PM
Ok, I had this EXACT same discussion a long while ago with a Garret Rep. Between him, me and him calling Garrett direct, he figured out that the "S" in GT28R"S" means "Special". That turbo was made specially for nissan during its racing days. Let me see if I can find what I wrote about it, becuase I honestly don't remember everything anymore.

Tyler

KA-T_240
02-12-2008, 04:40 PM
According to the Garrett website S on the end reffers to a S-cover compressor housing. Which is made for high flow applications.

burnsauto
02-12-2008, 04:43 PM
Yes, just because it is the same size and the same trim doesnt mean its the same.

The shape and curves on the fins of the turbo could be differant, one could have more fins.......


yeah its gatta be in the compressor wheel design....
compared to the normal t25 compressor housing, HKS's compressor housing has a slightly different shape, no? I thought it extended a little bit more, helping the top end of the rpm range, where with the normal t25 housing, it (power) would fall off a little bit.

good thread though steve.:bigok: one of very few worth looking at. +rep :)

steve shadows
02-12-2008, 05:11 PM
Thanks :)

Just wanted to clear it up for myself as well.

HellonFire
02-12-2008, 05:12 PM
According to the Garrett website S on the end reffers to a S-cover compressor housing. Which is made for high flow applications.

Ok, but there is NO GT2871RS.

This is what I found out, quoted from another forum.

Ok, well I'm not patient enough for you, so I did it myself.

I called Limit Engineering and Turbo's Direct as listed on the distributors section of Garretts site. They were the only ones open.

Limit Engineering said that the S specifically stands for the "Hose in, hose out" configuration of the turbo. Or also called "Slip Fit" Meaning it has no flange, like another turbo might have on the compressor housing, you can just use a coupler.

Turbo's Direct agreed with what Limit said, without me mentioning it. But also noted that he wasn't entirely sure that was all the difference and is going to call Garrett later and get back with me on exactly what it stands for. Because, if the S did stand for that configuration, then why wouldn't' the GT2871R and GT2876R also have the S because it is the same type.

So.. There you have it.

UPDATE:

Well, Turbo's Direct called me back. He talked directly to Garrett. This is what they said.

The S, was originally supposed to stand for a single port wastegate actuator. But, since most of the turbo's that they started making were only single port, they dropped the s, and never applied it. But then since the GT2860RS, was made specially for Nissan for racing, the designer of that turbo put the S back on there just to specify that it was a "Special" turbo. And thus, the only difference in the GT2860RS and GT2871R is the slightly larger compressor housing/wheel.

Tyler

KA-T_240
02-12-2008, 06:54 PM
I know there is not a 2871rs. I was referring to the S on the gt2860rs

HellonFire
02-12-2008, 06:57 PM
Well like I said above. According to Garrett themselves, it stands for "Special"

Tyler

SoSideways
02-12-2008, 07:05 PM
Steve Shadows - I hope you also re-read your OP, because it clearly challenges everyone to distinguish between a "GT28RS" vs a GT2871R.

The "GT28RS" is what many people call the "Disco Potato", and is indeed the GT2860RS.

The "GT-RS" is the HKS turbo, which is what I am assuming that you wanted people to distinguish between with the GT2871R.

Just thought I'd point that out, because I think your OP confused some people after they posted about the "Disco Potato", aka the GT2860RS, and you blasted them for bringing it up, but in your OP you clearly put "GT28RS", which is not the HKS GT-RS.

steve shadows
02-12-2008, 08:19 PM
^ No the point of this thread was I was pissed everyone was touting GTRS

numbers as the disco potato not knowing what they actually purchased was a gt2871R

The problem is all the fanbois use the interchangible like the GTRS will make 400whp! wow

or the GT28RS will make 400 WHP! wow

Find me a gt2860R on a 2.0 SR making 400whp...

:)

Def
02-12-2008, 09:15 PM
a "disco potato" is not a GT28RS

a GT28RS is a GT2871R with smaller housings

a "disco potato" is a GT28R Turbine wheel and housing with a Super 60 (antiquated 35 year old) compressor wheel (T3)

Hence this thread to educate people like you about things like this.

Wrong. It has nothing to do with the housings whatsoever.


A GT28RS is the "old" name for a GT2860RS - a NS111 53.8mm major dia. turbine wheel and a 60mm 62 trim GT series compressor wheel.

A GT2871R is the same 53.8mm NS111 turbine and a 71mm compressor wheel that can vary in trim(48, 52 - what you linked with the T04B comp. housing, and 56).

A T28 - S14/S15 turbo - whatever you want to call it is a GT2560R. It uses a 53mm major dia. turbine wheel and a 60mm major dia. 60 trim compressor wheel with older aerodynamics than the GT2860RS. That's why it has about 10-20 rwhp less power potential than the GT28RS/GT2860RS. I agree it's a better turbo given the cost though...



And to further edumacate - what was called a GT25R/GT2540R is now a GT2876R - 53.8mm NS111 turbine and 44 trim 76mm compressor wheel in a big T04S compressor housing.

emersonLP
02-13-2008, 08:49 AM
So what is the difference between the "HKS" GT-RS and the GT2871R? just different housings? the HKS one is supposedly faster spooling isnt it? or is my memory just laggy....

McRussellPants
02-13-2008, 10:10 AM
HKS is the same as 52T 2871, maybe different covers count if you're trying real hard to convince yourself that paying 1k extra was worth it.

I dunno what hes getting at.

steve shadows
02-13-2008, 10:59 AM
A T28 - S14/S15 turbo - whatever you want to call it is a GT2560R. It uses a 53mm major dia. turbine wheel and a 60mm major dia. 60 trim compressor wheel with older aerodynamics than the GT2860RS. That's why it has about 10-20 rwhp less power potential than the GT28RS/GT2860RS. I agree it's a better turbo given the cost though...






That's what I was getting at



A GT28RS is the "old" name for a GT2860RS - a NS111 53.8mm major dia. turbine wheel and a 60mm 62 trim GT series compressor wheel.


Right, which is the disco potato right? (I fucking hate SCC)

The old GT Compressor wheel has a different compressor map than the Super 60 T3???

Then SCC and Garrett's disco article is all wrong