J Chen

For sure it will flow more cause you now have
a 10 blade turbine as compared to the stock which
if memory serves me correct is a 12 or a 11 blade turbine.
Besides in aerodynamic terms, I think the garrett turbine is
more efficient. BTW, what kind of boost are you running
that cause the demage ?

Jfrahm

OK, maybe the turbine overall diameter is larger, I think the external diameter of the housing is pretty much the same. I thought the overall diameter of the turbine wheel was the same but it was less of trapezoid shape.

Here is the pic I found on this forum of the two hotsides:

kasturbo

Thanks for the reply. So I should not worry about the bigger housing then. I was running 18lbs. to 20lbs. of boost. The compressor is a 57 trim.

Jfrahm

That might be a #8 in the original post after all.

hosrom_951

#8 hotside

Laust Pedersen

For the "search challenged" take a look here and here .

The #8 turbine housing has a wider scroll (inner snail) than the #6 housing, so while it is possible to machine a #6 housing to accept a #8 wheel, it still will not flow as much as a “clean” #8 turbine section.

Laust

kasturbo

Thanks for helping the "searched challenged", I must have missed those posts. Still they had no mention of machining out the housing to accept the bigger wheel, so I guess this wasn't a total waste of space.

Any data or reasoning as to why it wouldn't flow as much air? This setup may give me the best of both worlds. A little less lag with a little more flow.

Asarus

Here is my stock K26#8

Laust Pedersen

That a machined conversion from a #6 to a #8 housing will not flow as much (higher back pressure) as a clean #8 turbine, is my assessment (no hard data) based on the fact that the scroll is narrower on the #6 and therefore has a smaller inside cross-section for air flow.

I would guess that a machined conversion would perform somewhere between the “the clean” #6 and #8 housings and I am curious about the actual outcome, since #8 housings are hard to find.

Laust

Mike Murcia

Do all #8 hotsides have the "8" stamped here?

kasturbo

I counted the fins tonight. It does have 10 fins. Is this the stage 3 wheel. Looks bigger then normal.

J Chen

por951turbo,

Stage lll & V all have 10 blades. What you
have to do is measure the OD of the turbine
& compare it with the table in Majestic's website.

Mike Murcia

Bump. Can anyone answer my question on post #25? I have a hotside with the same numbers as the one Asarus posted. I originally thought it was a #6 hotside, but it may be an 8. I took Asarus's picture he posted to show that my turbine opening is 55mm. Is it an 8 or 6?

Pauerman

Here's a pic of a KKK #6 vs a Turbonetics #8 w/ Stg 3 wheel:



Here are the numbers on the #6 casting. The bore measures just under 50mm and the Turbonetics #8 measures 57.5mm.

TurboTommy

55 mm is a #8