vboy425

iTrader: (19)

everybody is claiming this 20G 9 5 or 6 blade making more power or this and that power. Still i don't see any proof of it. It's like all of us whiping out our dicks and say

_____________12in
____12in
__________________12in
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electr0

iTrader: (2)

I have an EVO 8.

Jeff_Jeske

iTrader: (66)

Here......read this: https://www.evolutionm.net/forums/sh...d.php?t=209506

My 03 with 10.5HS put down better numbers.....and.....yes at that location!

Silver05Bullet

iTrader: (51)

I have a 20G-9-6 the car made 380hp 345tq on 93 oct. pump gas and 24 psi on a dynojet, i have 280 comp cams, intake exhaust, o2 housing, xspower intercooler stock intercooler pipes, act clutch, 780cc injectors a walbro fuel pump bpr8es plugs

Ph3n1x

iTrader: (12)

TTP Ran 10.92@ 129mph on a NON Gutted Car.

Curt brown is NOT the only one in the 10s on Stock Turbo.

gsrboi80

iTrader: (38)

20g9-6 here got a great deal on it couldnt be more pleased with the difference over the stock 03 Turbo

discopotato03

To me it sounds like the 5 blade compressor could help in two ways depending of course on what issues the 6 blade was having .

To my way of thinking a wheel with more blades wants to pump more air for a given speed than a similar one with less blades . The one pumping more air is going to have greater drive requirements than the one with less because its pumping a greater mass of air .
If a turbo was having surge issues then fitting an identical compressor with less blades should have less of a problem in this area .

Often with hi flowed turbos exhaust restriction can be a problem because the std turbine housing is reused to make fitting it back in between the manifold and dump pipe a snap . The trick is then to find a way to get more gas through it and make more power through larger wheels on both sides .
This is where it gets critical that the wheels be a good match with each other .
With turbines often the wheel speed has a large influence on flow restriction so a fast spinning one is better than a slow one at reducing flow . So if we were to use a compressor with less blades (lower drive power requirement) and faster rotating group speed then the overall result should be good .

Some years ago the term used for a turbine lugging around an inappropriately speced compressor and struggling to gain speed with highish exhaust gas velocity was "slip losses" .

Thoughts ? Cheers A .