T25 Flange 440 Hp Turbo On Rb20

[Muffa180]

Hi peoples,

ive been toying with the idea with a garret gt2876 with .7 front cover rated at 440 hp on a rb20 eng. I would make an adaptor plate to fit the standard rb20 manifold.The rb 20 is in a 180sx. Most rb20s ive seen with t3 flange turbos are very laggy.

Has anyone done this and how did the car drive?

Thanks Michael..

[rb26s13]

dont do it.. your looking at 5500rpm if not a bit later..

before getting 1 bar they are not a very well matched turbo

specialy for a rb20

[Muffa180]

OK.

Any other ideas with t25 flange? im looking for between 220 and 240 rwkw with plenty of power around that 3000-3500 rpm. Previously i had a r33 that made 287 rwkw with a GCG internal waste gate turbo but couldnt run less than 17psi due to the flapper valve not being big enough. That eng made plenty of power down low and now going to rb20 is a bit laggy considering its only got a r33 turbo on it.

Michael...

[R31Nismoid]

Thats the RB20 for ya mate.

Have a read of the RB20 sticky thread

The the sticky "Forced Induction Guide" there is lots of RB20 info threads... but get used to haveing no torque. Its part and parcel of owning an RB20 powered car

[rb26s13]

Any other ideas with t25 flange? im looking for between 220 and 240 rwkw with plenty of power around that 3000-3500 rpm.

sorry to say mate.. but its a rb20 if you want heaps of power around that rev range.. you might even have to go a 320hp GT25 by garrett.. but than your probaly looking at around 220ishrwkw (rough guess)

rb20's are wierd with turbo choices.. glad i never ended up modifyn my rb20 as the cost i could have spent on it ive ended up with a 26 with a few little mods instead but each to there own