garret GT28bb turbo info please????

[WHITE R32]

i have an oppourtunity to get one of the above very very very cheap and fully recoed...... would this be a good bolt on thing for my rb20det and what hp rating etc are they good for.....cheers guys Jon

[shaunr32]

where can you get them so cheap from.. can i have one can i , can i ??

from what i understand it is steel wheeled right.. it will be able to deliver lots more power spooling up rather nicely with minimal lag if not the same driveability as the stock turbo just with many moons more power....

shaunr32

[WHITE R32]

yeah i understand its steel wheeled...its off a mate who works at a turbo place... i just cant contact him at the moment.... hence trying to find out abit on my own.... looks to be a 1 off thing at the moment shaun sorry.....

[turbomad]

It would be a great turbo for RB20 and RB25's, according to a Performance shop in Adelaide they are rated at 400hp but can make 500hp in the right setup, they are supposed to spool up very similar to a stock RB25 turbo but with much improved mid-high power output. You need an adaptor plate to bolt them on a RB20-25 ($200) but you would need one for the GT30 aswell coz the .70 comp cover hits on the stock manifold so I'm told.

[Steve]

GT28 recoed??? thought you couldnt reco a garrett bb turbo.

Just make sure the exhaust A/R ratio isnt too big. Probably wouldnt want to go larger than a 0.87 - but if its really cheap, it just buy a smaller turbine housing.

[Sydneykid]

Hi Guys, as with all Garretts, the GT28BB comes with a bunch of alternate compressor wheels & covers and exhaust turbines & housings.

This is the spec we have used for 350 bhp on SR20;

0.64a/r Turbine Housing

0.60a/r Compressor Housing

Watercooled Centre

60 Trim Compressor Wheel

62 Trim Turbine Wheel

Integral Wastegate

Good boost at 3,500 rpm, full 1.1 bar at 4,000 rpm, max power at 7,250 rpm of 210 rwkw. Should do much the same on an RB20, maybe a little more. Cost us $2,100 brand new about 12 months ago.

Hope that helps.