Psymon Posted September 9, 2005 Share Posted September 9, 2005 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 Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/ Share on other sites More sharing options...
discopotato03 Posted September 9, 2005 Share Posted September 9, 2005 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 . Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1573787 Share on other sites More sharing options...
Psymon Posted September 9, 2005 Author Share Posted September 9, 2005 Cool. Who would be the best company to see about a GT28RS?? Thanks Simon Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1573812 Share on other sites More sharing options...
180bfj20det Posted September 9, 2005 Share Posted September 9, 2005 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!!!!!!!!! Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1573822 Share on other sites More sharing options...
discopotato03 Posted September 9, 2005 Share Posted September 9, 2005 Mine came from GCG Turbos at Condell Park in Sydney . Ask for Brett . Cheers A . Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1573823 Share on other sites More sharing options...
RACESPEC Posted September 9, 2005 Share Posted September 9, 2005 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] Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1573853 Share on other sites More sharing options...
discopotato03 Posted September 9, 2005 Share Posted September 9, 2005 (edited) 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 Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1574292 Share on other sites More sharing options...
RACESPEC Posted September 10, 2005 Share Posted September 10, 2005 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] Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1575872 Share on other sites More sharing options...
Dale FZ1 Posted September 10, 2005 Share Posted September 10, 2005 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 Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1575883 Share on other sites More sharing options...
RACESPEC Posted September 10, 2005 Share Posted September 10, 2005 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] Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1575887 Share on other sites More sharing options...
discopotato03 Posted September 11, 2005 Share Posted September 11, 2005 (edited) 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 Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1576666 Share on other sites More sharing options...
RACESPEC Posted September 11, 2005 Share Posted September 11, 2005 Race Spec I was looking for the cartridge number which from another string is446179-19 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 Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1576908 Share on other sites More sharing options...
discopotato03 Posted September 11, 2005 Share Posted September 11, 2005 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 . Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1577025 Share on other sites More sharing options...
RACESPEC Posted September 11, 2005 Share Posted September 11, 2005 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 Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1577260 Share on other sites More sharing options...
discopotato03 Posted September 11, 2005 Share Posted September 11, 2005 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 . Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1577425 Share on other sites More sharing options...
RACESPEC Posted September 11, 2005 Share Posted September 11, 2005 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] Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1577631 Share on other sites More sharing options...
inabox Posted September 12, 2005 Share Posted September 12, 2005 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.. Link to comment https://www.sau.com.au/forums/topic/87111-gt28rs-onto-rb20-how-hard-is-it/#findComment-1579437 Share on other sites More sharing options...
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