Interesting internal turbo differences between manufacterers.

[turbovanman]

I took apart my Garrett T3/T4 today and compared to my Turbonetics, they had the spring in backwards, the bearing is totally different as is the bearing setup. IMHO, the Turbonetics is a way better product and they use a dynamic seal, the Garrett is a carbon seal. And the bonus is, I didn't realize the Turbonetics is a large shaft so hopefully, I can straighten out the fins, have it rebalanced and get an S50 wheel, :clap:

One other note, the Turbonetics turbine weighs 10.9 oz's, the Garrett 9.4 and another I bought to fix the Turbonetics but small shaft, which I didn't know until now, also 10.9 oz's!!!!!!!!

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01739.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01742.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01740.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01741.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01743.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01744.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01745.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01746.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01748.jpg

http://i12.photobucket.com/albums/a228/turbovanman/Turbo%20parts%20and%20pieces/DSC01754.jpg

[tryingbe]

Lighter shaft is better for performance sake.

Garrett TI turbo has dynamic seal and Garrett TII has carbon seal, which is "better"?

[t3rse]

Reciprocating mass is at the center, so how does a lighter shaft perform better?

[8valves]

I took apart my Garrett T3/T4 today and compared to my Turbonetics, they had the spring in backwards, the bearing is totally different as is the bearing setup. IMHO, the Turbonetics is a way better product and they use a dynamic seal, the Garrett is a carbon seal. And the bonus is, I didn't realize the Turbonetics is a large shaft so hopefully, I can straighten out the fins, have it rebalanced and get an S50 wheel, :clap:

One other note, the Turbonetics turbine weighs 10.9 oz's, the Garrett 9.4 and another I bought to fix the Turbonetics but small shaft, which I didn't know until now, also 10.9 oz's!!!!!!!!

I'll take some pics and post up later.


Interesting that nobody in endurance or rally racing runs a T-netcis turbo though, eh?

[Ondonti]

cause most people I know would never run them? :P

And 400-500hp is not the time to upgrade to a large shaft.
My turbo is still a small shaft and its 700+ capable.

[turbovanman]

Interesting that nobody in endurance or rally racing runs a T-netcis turbo though, eh?

I don't rally or endurance, lol, but looking at the pieces, from an untrained eye, it looks like the TN is better built.


cause most people I know would never run them? :P

And 400-500hp is not the time to upgrade to a large shaft.
My turbo is still a small shaft and its 700+ capable.

Nothing I can do about that, its what the turbo came with.

[johnl]

Large shaft vs small shaft - maybe I'm wrong but . . .

Large shaft gives you more surface area for longer life AND it is easier to get small shaft play BUT it has increased bearing/oil drag/inertia on spool up. Also, going to a different shaft diameter locks your customers into your replacement parts.

[turbovanman]

Good points, :nod:

The Turbonetics had 2-3 years of abuse and there is NO wear inside, I think I will get it balanced and put it back together.

[88_pacifica]

Also, going to a different shaft diameter locks your customers into your replacement parts.

Bingo...

[zin]

Reciprocating mass is at the center, so how does a lighter shaft perform better?

There isn't any reciprocating (hopefully), but the more mass you have, the more energy it takes to spin it up from one speed to another. The larger shaft will yield a larger bearing surface, allowing a higher load, but as speeds go up the angular/surface speed of that bearing gets higher and you may start to lose some of the benefits of the larger bearing, in the form of higher hydrodynamic drag, etc.

Mike

[zin]

Bingo...

You'd never make it in marketing! :D:lol::lol: None the less, a very good point, and IIRC, the "big shaft" (Marketing Geniuses at work!) showed up about the time their love affair came to an end...

Mike

[turbovanman]

Well I straigthened out the fins, its getting balanced.

I will know if the heavier wheel is more laggy when it goes back together.

I was going to get a spacer made to run a S50 wheel on a smaller shaft but dont' need that anymore and I can't find a S50 wheel, :(