tarinitup

iTrader: (11)

Pound for pound does a larger turbo make more power keeping everything else the same?

00z71 and I have very similar builds and we are trying out a couple of turbos. We currently have a gt91 on each of our 408s and he is going to try out a thumper 98mm while I am going to try a garrett 85mm. The goal is to go faster so we will post how it goes after some testing.

Lil brother PI

maybe more power and can probly push it more but maybe more lag....i dont know lets see what some of the turbo experts chime in good question and let us know the results

smokeshow

iTrader: (16)

Depends on the manufacturer, some turbos have smaller compressors but can flow what some of the big boys do. Its all about how much air the compressor can flow at your target boost level, and what volumetric efficiency its at. Don't forget proper exhaust housing sizing

JoeyGC5

iTrader: (24)

In for the test results

tarinitup

iTrader: (11)

My friends 98mm making 91 look like a chump.

TURBHOE

iTrader: (4)

a lot is going to do with the exhaust side for sure. how well it flows compared to the other. if the smaller of the two is choking off the exhaust then when the bigger one is installed the boost pressure will probably drop do to better exhaust side not making as much back pressure in the cyl. so when the boost gets back to where it was set, by increasing the controller then the bigger compressor is going to be more effeicient (sp) at the same boost level. because it is now going to be pushing a greater volume of air at the same psi.

make sense? i know its not very technical it wasn't ment be.

Swerve7rpm2000

iTrader: (9)

Yes you will make more power at the same boost level just because of the extra volume of air....

FarmTruc

iTrader: (5)

I have a Turbonetics 68mm T4 for sale, that's the route i'd go

CC05

iTrader: (2)

"91 mm" and "chump" don't belong in the same sentence. Regardless of the reasoning behind which should theoretically make more power, I'm in for results just to see what the two trucks do!

00Z71

iTrader: (2)

Should find out soon...