In Car Compressor Wheel Swap

[turbotrana]

Twas Friday night, no babes ringing me up so I thought I put my 11 blade GTX style wheel on my turbo with the turbo in the car.

Its quite easy, just got to drop the dump to get to the turbine nut and a modified 13mm spannas to get the compressor housing cover off.

The original GT wheel just slid off however did have to put the new billet in the oven for a while to get it back on the shaft. A bit of a tight fit but went on fine.

THe car seems to go pretty hard on the top end but hard to say from bum feel.

[IH8TOADS]

Haha did some baking and all!! Nice work.

[XtRmn8]

Hi turbotrana,

What turbo are you running, 3576 or 3583?

Any ore details on the upgrade wheel that you fitted?

Would something like this not need a tune adjustment?

Cheers

[discostig]

That's pretty sweet! So the compressor slides on the shaft there, are there any notches that stop it free spinning or is it just the force from the nut and friction against the shaft?

Oh and Tony tunes himself I think.

Edited 24/11/13 02:34 AM by -SteveR-

[Ralph Wiggum]

Amazeballs that it doesnt have any balance issues Tony!

Fwiw mts quoted me $120 for a full vsr.

[ratter]

I was going to mention the balance as well but Ralph beat me to it

[discostig]

What's a VSR? very speedy rooting? hahaha, I kill me.

I assume a balancing process?

[turbotrana]

VSR is just balancing the whole cartridge assembled. I've read up a bit on balancing. Essentially some have each component balanced, some have each component balanced and then VSR balanced.

I think with the ballbearing cartridge that the GT turbo uses, I have heard some turbo rebuilders don't VSR balance them for some reason, just component balance them.(no clue why or if this is completely true)

My billet wheel is very finely balanced and the turbine is balanced by garrett. So its balanced as good as it needs to be for me. For some reason the turbo runs smoother now than it did with original GT wheel.

I am running the gt3582 in my G6e. The wheel is a billet I've chosen out of a whole list of billets the compressor wheel company manufactures.

Steve, the compressor wheels usually slide off quite easily. In this case the GT3582 wheel slid off easily however the new billet wheel did not simply slide on. I need to talk to the manufacture about clearances as I was hoping an easy slide on/slide off fit to compare compressor wheels. Maybe the ally billet wheel needs to be tight cause its billet ally and expansion issues however the wheel will need to be butchered to get it off.

To get it on needed to put in oven till too hot to pick up then could slide on 80%. Did the rest with the compressor nut which is easy. There is no keyway, just tighten the nut correctly. I have an inch/lb torque wrench and did it to 20in/lb then 1/8th of a turn. It works out to 1/4 turn from the point of firmness on the nut which confirms what I read elswhere. You don't really need a torque wrench. Since its a reverse nut it wont come lose.

[fastfwd]

I didnt know you could complete a VSR balance or component balance with the turbo in the car still. How do they do it exactly?

[Ralph Wiggum]

VSR is just balancing the whole cartridge assembled. I've read up a bit on balancing. Essentially some have each component balanced, some have each component balanced and then VSR balanced.

MTQ strongly recommended VSR balancing for GT turbo's. At the time they where of the opinion it was the best method.