Josh Posted January 22, 2011 Share Posted January 22, 2011 Was looking for some info/help on deciding turbo upgrade for my turbo pinto. Currently making 195kw on 18psi with a t28bb off a s15, running it on bit over 20psi when drag racing, which is pretty much out of the efficiency of the turbo, and the dyno map shows it pulls untill around 3600rpm then starts tapering off, then dying off completely by 5500rpm, rendering the last 100rpm powerless. This shows when racing to, as have awesome acceleration but alot of people are owning me because I'm efectively plateauing in the higher revs, it's super responsive in the lower revs which is fun but now looking for that pull right through to 6500-7000rpm. So yea, without going stupid big turbo, what would be a good upgrade from a t28 to make more power and pull further through the revs. I currently have a T3-T25 flange converter so turbo would have to be either of those, probably T3 spec no doubt. Cheers. Quote Link to comment Share on other sites More sharing options...
Gaz Posted January 22, 2011 Share Posted January 22, 2011 Gt28rs would be slightly better. Another option is to use the GTir rear housing. The GT2876r is what people generally buy if they want larger than the GT29rs. Not speaking from experiance here. Gaz Quote Link to comment Share on other sites More sharing options...
Josh Posted January 22, 2011 Author Share Posted January 22, 2011 The GT2876r looks like the business 280-410hp, that's on first quick look though. But fuck, just over 2k for a new one from nz performance! Looks like exhaust housing is same as the T28 have currently so downpipe should bolt straight up as well I assume which would be super handy. Quote Link to comment Share on other sites More sharing options...
kpr Posted January 22, 2011 Share Posted January 22, 2011 gt2871r with .86 a/r exhaust side. would be the one to go for if you don't want to do too much fabrication, and keep it responsive. theres quite a few different gt2871r's you'd want to run the biggest spec'd one. the 76r runs the massive compressor housing so isnt room friendly. cheaper option maybe.. to use some kind of t3/t4 combo, Quote Link to comment Share on other sites More sharing options...
kpr Posted January 22, 2011 Share Posted January 22, 2011 this one, with the 56 trim compressor : http://www.turbobygarrett.com/turbobyga ... 3347_2.htm and use the .86 ar exhaust option Quote Link to comment Share on other sites More sharing options...
Josh Posted January 22, 2011 Author Share Posted January 22, 2011 So 56 trim compressor, and the T28 I have being a 60 trim, that makes it smaller I assume, is that going to make much diff? And the exhaust going from .64 to .84 I understand and going by garrett site looks like it will work well. But yea, explain compreessor housing? Quote Link to comment Share on other sites More sharing options...
kpr Posted January 22, 2011 Share Posted January 22, 2011 different compressor wheel though. trim is the difference in size between inducer and exducer (small and big part) of the compressor wheel. so you can only compare gt2871r wheels with gt2871r wheels, if you look at the gt2876r it actually has a smaller trim but flows a little more than the 71r. which means it has a bigger exducer basically. dont worry too much about the size of the compressor housing, wheel size is far more important. different to the exhaust side Quote Link to comment Share on other sites More sharing options...
zep Posted January 23, 2011 Share Posted January 23, 2011 Have a look at this. If you can get decent shipping and stuff then it might bring the price down. This is what I will be eventually going for: http://cgi.ebay.com/ebaymotors/Garrett- ... ccessories With .64 AR. Quote Link to comment Share on other sites More sharing options...
Testament Posted January 23, 2011 Share Posted January 23, 2011 Change manifold flange and get a TD05 off a late model evo? they are pretty good Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted January 23, 2011 Share Posted January 23, 2011 I used a td05hr off've an evo 4 and that was 222kw @ 18psi on the 7agte. Very responsive and full boost at 3500rpm Quote Link to comment Share on other sites More sharing options...
Josh Posted January 24, 2011 Author Share Posted January 24, 2011 Awesome, this is the sort of shit I need to know. Would be pretty keen on something off another car as be cheaper than a brand spankin' garrett. Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted January 24, 2011 Share Posted January 24, 2011 the new evo turbos are bigger - slightly more power and less lag. apparently. as tested on a rally car. i use a vf36. 200 kwatw on 19psi. hard to find and will require new manifold. tdo5 have heaps of different sizes available and aftermarket support so not a bad option. Quote Link to comment Share on other sites More sharing options...
drftnmaz Posted January 24, 2011 Share Posted January 24, 2011 tdo5hr is a sweet turbo, have seen these pushed to about ~240kw on a motor with big cams... but its a twin-scroll so you will need a new manifold to suit, although the early tdo5h from evo0-3 is single entry but not quite as good a turbo Quote Link to comment Share on other sites More sharing options...
mjrstar Posted January 24, 2011 Share Posted January 24, 2011 +1 for TD05HR working pretty well if you can get the reverse scroll to align with the piping.. Only real downside is that most of the wheel upgrades have to come from china so quality can be a bit questionable. The evo 9 turbo would be the one to get as the housings are slightly larger but they all basically take the same size wheels. Mitsi did play around with the materials the compressor and turbine wheels were made from. evo 1-9 compressor Inducer = 48.3mm Exducer = 68mm evo 1-9 turbine Inducer = 56mm Exducer = 49.2mm (Except for E7gta and E6.5 TME which use Compressor Inducer = 49.3mm Exducer = 65mm) Be warned, the evo 9 tend to dynamite the comressor.. So the next one I get built will probably just use The E9 cores and covers and E4 rotating assembly (which i have recently aquired at a sharp price.) Oh yeah and the E10 turbo is back to normal rotation (not that you'd bother trying to find one of those) Pretty sure i have a brand new (spare) compressor wheel (Inducer = 49.3mm Exducer = 65mm) which i would part with if you find a semi dynamited evo turbo, although the compressor cover would need to machined oversize by 1mm to take the wheel.. Quote Link to comment Share on other sites More sharing options...
Honda Ass Dragger Posted January 25, 2011 Share Posted January 25, 2011 The later model TD turbo from the EVo4 forwards are not upgradable though are they, as I know you can't get them turning into a stven murch t05/06 hybrid Quote Link to comment Share on other sites More sharing options...
zep Posted January 25, 2011 Share Posted January 25, 2011 Butting in on this. Would then, the TD05HR be a good upgrade from my T3BB (RB25DET)? I see there is one on TM for about $600, is this worth it, or would be it worth waiting for the GT2871R cash? Would need to modify my manifold too, which could be a pain. Quote Link to comment Share on other sites More sharing options...
Gaz Posted January 25, 2011 Share Posted January 25, 2011 The Td05 is a good turbo but I thought it was only marginally better than the T28. In saying that it would be a cheap trial and error type turbo. How much more power you after? You could look at running a TD06 (evo and small truck hybrid) but it may be a bit laggy. Gaz Quote Link to comment Share on other sites More sharing options...
Honda Ass Dragger Posted January 25, 2011 Share Posted January 25, 2011 Butting in on this. Would then, the TD05HR be a good upgrade from my T3BB (RB25DET)? I see there is one on TM for about $600, is this worth it, or would be it worth waiting for the GT2871R cash? Would need to modify my manifold too, which could be a pain. No point unless you are going to make a totally new manifold as the later model TD turbo used a twin scrool* (spelling) design to help increase respomnce, but with out the correct manifold the Turbo will work but not as well as it should IMO, you have a well built motor, stop being a Jew save some coin get a decent turbo and enjoy the results Quote Link to comment Share on other sites More sharing options...
zep Posted January 25, 2011 Share Posted January 25, 2011 IMO, you have a well built motor, stop being a Jew save some coin get a decent turbo and enjoy the results Haha, thanks man, need a bit of harsh reality some time! Quote Link to comment Share on other sites More sharing options...
Honda Ass Dragger Posted January 25, 2011 Share Posted January 25, 2011 IMO, you have a well built motor, stop being a Jew save some coin get a decent turbo and enjoy the results Haha, thanks man, need a bit of harsh reality some time! Relived you didn't take to much offence to that comment But with the modifactions done to your motor, its just begging for you to fit a decent turbo and release the ponies Masterpower is a great option is you are look for a good turbo but don't require the BB factor, if you do want to spend a bit more, talk to Chris at Alltech on Aucklands Northshore tell him what you are wanting to achive and he will have options for you in Garrett in both ball bearing and planbearings, I remeber when I was looking for a new turbo for my 3sgte project I spoke with Chris and for arounds $1250 he could do a really good Garret plain bearing turbo End of the day you will get what you pay for, but first I think you need to decide on how much hp you are chasing and work back from there Quote Link to comment Share on other sites More sharing options...
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