Ferocity02

iTrader: (60)

The On3 T76 is a 76/65 while the biggest eBay GT45 is a 69/77. A few people on here have mentioned putting the GT45 turbine into the On3 T76 compressor, or vice versa. This would make a pretty sweet turbo for still a reasonable price. Anyone attempted this? Or does anyone have both turbos to see if it's possible? Pictures of the two reveal similar turbine/compressor to CHRA mounting methods, but pictures only tell so much.

ttranssam

iTrader: (10)

very intresting....dont know much about the gt45 though.

BottleFedZ346

iTrader: (17)

Hmmmmm....

831jd

iTrader: (3)

Im going too try it! 76/77 lol has to make power just has to.

a-low

iTrader: (26)

Any updates on this?

killernoodle

I actually have both of these turbos, I'll take some measurements to see if it is even possible to do this.

Realizer

Ferocity02

iTrader: (60)

Anything?

killernoodle

Not yet. Maybe this weekend.

tta656

iTrader: (5)

Ohh **** lucky i wasnt drinking anything....

JoshuaGrooms83

iTrader: (2)

very interesting. what would this do exactly? im just curious what the change in turbine wheels would do? very interested in this.

Ferocity02

iTrader: (60)

Well, both turbo's are pretty cheap from eBay. The On3 has a nice 76mm compressor, but the turbine is 65mm, too small for many LS applications. The GT45 however has a nice 77mm turbine, but a smallish 69mm compressor. So the idea would be to take the compressor of the On3 and the turbine of the GT45 and make a 76/77 turbo. Name brand turbos of this size are quite pricey, $1200+ for the Turbonetic 7675 for example.

I was hoping someone had both the On3 and the GT45 turbos to see if some of the parts are interchangeable.

JoshuaGrooms83

iTrader: (2)

oh ok, that would be awseom to find out!

Danny

iTrader: (16)

I have two GT45s here. If anyone local with a On3 T76 wants to try it, let me know.

BTW, I believe I have the smaller 67/64 GT45s, not the 69/77.

a-low

iTrader: (26)

Been waiting on results for ever lol.

LS1NOVA

iTrader: (12)

The GT45 will do 700 to the wheels, why bother?

Danny

iTrader: (16)

Which GT45? The 67/64 or the 69/77?

denmah

iTrader: (2)

i have done 650whp on a ebay gt45 in a 4.8! they are BEASTS

i would love to see a really good combination use one, i bet they can do 700-750whp

Torqueshaft

Anybody ever try this yet...?

Mongoose350

iTrader: (1)

CXRacing makes an 80mm (80/77) GT45. $600 on eBay.