4 replies to this topic

[MINI-TURBO]

I'm currently building a mini turbo with a metro turbo engine, I'm doing a bit of research in what turbo to use. I'm tempted to run with a dual ball bearing turbo I've looked at the gt3076r. any other dual ball bearing turbos people would suggest?

[mini13]

GT3076!!!!

 

it will never make any boost! far to big, might be ok if you strap 2 1380's together, or go to 16k.

 

GT2056 is considerd a big turbo for the A series and will easily be big enough for 220hp, some people with 16v heads have managed to run as big as the GT2860 (RS) but I think you'll struggle to find a BB turbo small enough.

 

GT1752 from the saab 95 is a great turbo for a road car, or the td04 equivalent (bit more durable than the gt17)

 

as a general rule the last 2 digits on garret turbo's are the  compressor wheel diameter which gives an indication of the output, your looking for somthing around 48-58mm, but ideally you need to plot  the flow on the compressor map, try this with a ve of 85%

 

http://www.motorgeek...e&page=flowcalc

Edited by mini13, 17 March 2016 - 09:14 AM.

[MINI-TURBO]

GT3076!!!!

 

it will never make any boost! far to big, might be ok if you strap 2 1380's together, or go to 16k.

 

GT2056 is considerd a big turbo for the A series and will easily be big enough for 220hp, some people with 16v heads have managed to run as big as the GT2860 (RS) but I think you'll struggle to find a BB turbo small enough.

 

GT1752 from the saab 95 is a great turbo for a road car, or the td04 equivalent (bit more durable than the gt17)

 

as a general rule the last 2 digits on garret turbo's are the  compressor wheel diameter which gives an indication of the output, your looking for somthing around 48-58mm, but ideally you need to plot  the flow on the compressor map, try this with a ve of 85%

 

http://www.motorgeek...e&page=flowcalc

ok thanks, i will stay away from that one then haha 

i have a gt1752 which i was going to use, i just like the thought of a dual ball bearing turbo. how much boost are people comfortably running with the gt1752? 

[mini13]

they are good for 200+, the highest Ive seen recorded is around 240 on the GT17.

 

they are a good choice as they com on boost quite early so are pretty drivable, the 2056 comes on about 3500rpm

[MINI-TURBO]

they are good for 200+, the highest Ive seen recorded is around 240 on the GT17.

 

they are a good choice as they com on boost quite early so are pretty drivable, the 2056 comes on about 3500rpm

ah cool I'm aiming for 180+ so i think ill stick with the gt17, i can always upgrade if i want to in the future

 

thanks for the advice