Gt28rs Onto Rb20. How Hard Is It?

[Psymon]

I'm looking at a turbo upgrade in the next week or so. I've heard good things about the HKS GT2530 and the Garrett GT28RS. I know the GT2530 is

pretty much a direct bolt on to the RB20.

I need to know how hard it is to get the GT28RS onto the RB20. What work is involved to do this??

Also.... will there be much difference between the two turbos? There's a significant diference in price and i need to know if i can justify spending the extra to get the HKS Turbo??'

Thanks

Simon

[discopotato03]

Very similar cartridge , same turbine . 2530 uses 60.1mm 63 trim compressor where the GT28RS is 62 trim compressor with a bit more tip height . It is a later evolution of the 2530 .

Turbine housings , 2530 uses RB20/25 specific .64 ARR T3 flanged housing . GT28RS uses a generic type T25/28 flanged housing in .86 ARR .

What you really need is the .86 housing with the T3 flange , an option thats not available .

The GT28RS is the better turbo but its T25/28 flange will require an adapter to fit it to your manifold . The generic T28 turbine outlet is very similar to SR20 T28's so a decent aftermarket split dump pipe may get the job done . From memory one of the stud holes is in a very slightly different position , nothing a little die grinding can't fix . Alternatively a second hand 2530 housing will make it bolt on but the 28RS really does need the .86 ARR to work properly .

Cheers A .

[Psymon]

Cool. Who would be the best company to see about a GT28RS??

Thanks

Simon

[180bfj20det]

Cool. Who would be the best company to see about a GT28RS??

Thanks

Simon

<{POST_SNAPBACK}>

I HAVE FOUND HORSEPOWERINABOX THE BEST FOR PRICES AND ALSO INFORMATION.

GO MORRIE!!!!!!!!!

[discopotato03]

Mine came from GCG Turbos at Condell Park in Sydney . Ask for Brett .

Cheers A .

[RACESPEC]

Simon

We can also supply the GT28RS and if you require the RB20 upgrade.

We take the GT28RS and put the RB20 exhaust housing on there

We require your turbo in exchange, $1850 plus $20 Delivery

BRAND NEW TURBOS, we are apart of the GARRETT Network and all out Turbos come with a 12 Month Manufacturers Warranty

Here is an example of a GT2535R (SB8032) with RB25 EXHAUST HOUSING

Thanks

Tarek

RACESPEC

[email protected]

[discopotato03]

Racespec can you show the ID tag of that turbo as the HKS GT2535 has an unusial 69mm compressor wheel .

Also the RB25 or VG30 BB housing is worth a go as the .86 GT28 housing is a high flowing item .

Thanks A .

Edited September 9, 2005 by discopotato03

[RACESPEC]

Racespec can you show the ID tag of that turbo as the HKS GT2535 has an unusial 69mm compressor wheel .

Also the RB25 or VG30 BB housing is worth a go as the .86 GT28 housing is a high flowing item .

Thanks A .

<{POST_SNAPBACK}>

I'll take some pics of it on monday as its a customers turbo.

its a SB8032

COmpressor

Trim 56

Inducer 53.17

Thanks

Tarek

RACESPEC

[email protected]

[Dale FZ1]

What you really need is the .86 housing with the T3 flange , an option thats not available .

The GT28RS is the better turbo but its T25/28 flange will require an adapter to fit it to your manifold . The generic T28 turbine outlet is very similar to SR20 T28's so a decent aftermarket split dump pipe may get the job done . From memory one of the stud holes is in a very slightly different position , nothing a little die grinding can't fix . Cheers  A .

<{POST_SNAPBACK}>

What sort of work is required to adapt T28 to the T3 exhaust flange? There is not a large variation between the two.

Also have you seen the SR20 dumps successfully fitted to a Garrett?

cheers

Dale

[RACESPEC]

What sort of work is required to adapt T28 to the T3 exhaust flange?  There is not a large variation between the two.

Also have you seen the SR20 dumps successfully fitted to a Garrett?

cheers

Dale

<{POST_SNAPBACK}>

USing some 20mm adaptors do the trick

SR20 dumps fit no worries to the garrett turbos

Cheers

Tarek

RACESPEC

[email protected]

[discopotato03]

Race Spec I was looking for the cartridge number which from another string is

446179-19 or maybe 446179-0019 . Was the one in the pics a Garrett marketed turbo or a HKS ? Also that one looks to have the Nissan/Garrett style compressor cover rather than the Garrett T3 barb style shown in HKS catalogs .

Again thanks A .

Edited September 11, 2005 by discopotato03

[RACESPEC]

Race Spec I was looking for the cartridge number which from another string is

446179-19 or maybe 446179-0019 . Was the one in the pics a Garrett marketed turbo or a HKS ? Also that one looks to have the Nissan/Garrett style compressor cover rather than the Garrett T3 barb style shown in HKS catalogs .

Again thanks A .

<{POST_SNAPBACK}>

Hey mate

Its a GARRETT TURBO

CHRA 446179-32

Wheel 71.05mm

Normally with a T25/28 flanged turbine housing.

I've looked through all my records and can not find

446179-19

Where does that come from?

Thanks

Tarek

RACESPEC

[discopotato03]

From my list the cartridge no 446179-0032 uses the NS111 turbine in a .86 ARR GT28 turbine housing . Its compressor is a 71.1mm 56 trim GT35 in a .60 ARR comp cover . In short its been called the 56 trim GT2871R and goes under turbo assembly no 743347-0002 .

Garrett also do a very similar thing but with a 48 trim compressor under cartridge no 446179-0031 and assembly no 743347-0001 .

The HKS GT-RS fits in between with its 52 trim compressor and same turbine , it generally uses a .64ARR turbine housing in T28 flange or HKS's T3 flanged housing with outlet to suit the RB20/25 . If anyone has a GT-RS handy I'd like to know its ID tag numbers as well for future reference .

The 446179-19 is apparently the cartridge no for the HKS GT2535 , which uses a 69mm diametre compressor .

Cheers A .

[RACESPEC]

From my list the cartridge no 446179-0032 uses the NS111 turbine in a .86 ARR GT28 turbine housing . Its compressor is a 71.1mm 56 trim GT35 in a .60 ARR comp cover . In short its been called the 56 trim GT2871R and goes under turbo assembly no 743347-0002 .

Garrett also do a very similar thing but with a 48 trim compressor under cartridge no 446179-0031 and assembly no 743347-0001 .

The HKS GT-RS fits in between with its 52 trim compressor and same turbine , it generally uses a .64ARR turbine housing in T28 flange or HKS's T3 flanged housing with outlet to suit the RB20/25 . If anyone has a GT-RS handy I'd like to know its ID tag numbers as well for future reference .

The 446179-19 is apparently the cartridge no for the HKS GT2535 , which uses a 69mm diametre compressor .

Cheers  A .

<{POST_SNAPBACK}>

That is quite true, biggest difference between the GT2871R and SB8031/SB8032 is the compressor cover aswell

the HKS GT-RS has identical specs to the 707160-10 from GARRETT

Thanks

Tarek

RACESPEC

[discopotato03]

That Turbo assembly no 707160-10 or -0010 on my list shows the CHRA or cartridge no as 446179-0067 .

I also found the GT2535 cartridge no 446179-0019 , its assembly no is 472560-0005 (.64ARR) and -0006 (.86AAR) .

There are six turbos in this group , aplications are all HKS . They are in the GT2560BB section .

472560-0001 446179-0017 . 64 ARR

472560-0002 446179-0017 . 86ARR

472560-0003 446179-0020 . 64 ARR

472560-0004 446179-0021 . 64 ARR

472560-0005 446179-0019 . 64 ARR

472560-0006 446179-0019 . 86 ARR

Cheers A .

[RACESPEC]

There is also available from HKS

472560-0010 446179-0020

472560-0011 446179-0021

472560-0012 446179-0017

472560-0013 446179-0019

Also, 472560-0015 which is available from GARRETT aswell although classified as a HKS item on other sites and related info

GT28RBB

Thanks

Tarek

RACESPEC

[email protected]

[inabox]

I HAVE FOUND HORSEPOWERINABOX THE BEST FOR PRICES AND ALSO INFORMATION.

GO MORRIE!!!!!!!!!

<{POST_SNAPBACK}>

Thanks for that.

We have options now of the RB engine in GT28rs and GT2871R using a new Garrett turbo and machining a Nissan housing to retain the flange and dump pattern. These turbos are a new initiative and designed for the guy that doesn't want to rotate the earth and make 300 at the wheels. They make a good early spooling bolt on option for RB20 and 25. I would probably sway towards a GT2871 RB exhaust housing unit for a RB25.

Morrie

Horsepowerinabox.com

PS Come and see us at the Jamboree if you are there!!!

We will have a trade stand there, near the stage..