Stock turbo Compressor upgrade

[shabby]

Originally Posted by BaldTurboFreak Okay we're in buisiness! Weve got a larger induce wheel with the same backwall coming and should be machined up and ready to rock by next weekend. It should provide almost the exact same spool with another 50hp up top.

From which turbo is this wheel from, got some induc/exduc measurements?

[BaldTurboFreak]

Same exducer size, but the inducer is 46.4mm up from the stocker's 43.25mm.
SO it widens the map, but reduces the max pressure ratio it can make.

[LatinVenom]

Is this the RS6 wheel that was a subject of a post on another thread?.

[BaldTurboFreak]

hmm Maybe...

[mena661]

Originally Posted by BaldTurboFreak hmm Maybe...

[lil goat]

Way to go BTF, now this is what I'm talking about, WAHOO!

[shabby]

Originally Posted by BaldTurboFreak Same exducer size, but the inducer is 46.4mm up from the stocker's 43.25mm. SO it widens the map, but reduces the max pressure ratio it can make.

How big is the exducer, 60mm maybe? The mitsu 16g has the same inducer, potent little turbo.

[BaldTurboFreak]

I have it written down somewhere, but that little fact got tossed aside when I found out they were the same size. I would assume 56-60mm.

I should have it back by the middle of this week, hopefully on and testing by the weekend.

you'll have to swing down from toronto,Eh? My buddy John (the one with the wicked MR2 I built on my site) is from toronto. Says we gotta go up there with the hotrods' to play. Seems there is quite a racing scene up there.....

[BaldTurboFreak]

Originally Posted by shabby A little clip on the turbine wheel wouldnt hurt if nothing bigger fits, this is normally done on dsm's with great success. Normally people go with a 10 degree clip on a 16g sized turbo, but apperantly buschur went with a 25 degree clip on his 20g turbo.

Perhaps if it's nessicary, but I'll try to avoid it like the plague. Id rather cut it for a larger wheel.

Clipped Turbine Wheel
When an angle is machined on the turbine wheel exducer (outlet side), the wheel is said to be "clipped". Clipping causes a minor increase in the wheel's flow capability; however, it dramatically lowers the turbo efficiency. This reduction in efficiency causes the turbo to come up on boost at a later engine speed (ex. increased turbo lag). High performance applications should never use a clipped turbine wheel. All Garrett GT turbos use modern unclipped turbine wheels.

[shabby]

Its a poor mans turbine upgrade, normally found on dsm's

[ebeacham]

would this mod be a do it yourself mod?

[LatinVenom]

Yes, you would take your KO4 turbo off and send it to BTF.
He will do the upgrades and returned it to you.
You then have to bolt it back on in the car but BTF will supply you with detail instructions for doing it.
Hope this helps.
I am sure BTF will elaborate more on this for you in case I'd missed something.

[Bagpypr]

Put me on the list as well! WOT we need is more WOT.

[BaldTurboFreak]

Well I have pricing for everyone. The total to have your turbo "bigwheel'd" will be $829.99.

That is assuming your turbo is in good shape. If it's wiped out or needs bearings we will contact you with an approximate repair cost.

Thats includes
Disassembly, inspection
CNC machining of the compressor housing to fit the 3.4mm bigger wheel.
Reassembly and balancing of the rotating assembly on a state of the art balancing machine.


Powdercoating: any color on the compressor housing add $45.
Swaintech on the turbine housing:add $75. (this one increases lead time- I'm at their mercy)

[Deepbluegxp]

How long does it take? Is it something that we can bring the car to you and you can do in one day if everything is ok.