I have been having a discussion with a couple of friends with regards the above turbos
Given that the 3071 and 3576 would be on their 0.63ar hotside for best spool at a sacrifice of top end power, while the g25-660 being a smaller turbo would be on the 0.92ar what do you think the best option would be for our engines for achieving above 500hp crank with the best possible spool?
Real life evidence.
On my car, 2.2 and cams I have the 3071gen2 0.63 with 2.1bar at 3900rpm on 3d gear and 3500 on 4th, making 400whp.
I have been told the 3576 on 0.63 would shift spool about 300rpm to potentially give another 50hp(25whp)
The 660 recently on a 2.5 Subaru I was told it started spoiling from 2600rpm and had full boost at 3600 with the 0.92ar.
I may be seeing and dyno/measuring this car this week...
Given that the 3071 and 3576 would be on their 0.63ar hotside for best spool at a sacrifice of top end power, while the g25-660 being a smaller turbo would be on the 0.92ar what do you think the best option would be for our engines for achieving above 500hp crank with the best possible spool?
Real life evidence.
On my car, 2.2 and cams I have the 3071gen2 0.63 with 2.1bar at 3900rpm on 3d gear and 3500 on 4th, making 400whp.
I have been told the 3576 on 0.63 would shift spool about 300rpm to potentially give another 50hp(25whp)
The 660 recently on a 2.5 Subaru I was told it started spoiling from 2600rpm and had full boost at 3600 with the 0.92ar.
I may be seeing and dyno/measuring this car this week...
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