sti99civicsi

Anyone on here done this yet? I called Extrude Hone in CA and they said it's about 350 to do the whole thing, compressor, wheels, exhaust, etc. The whole shabang. I've read that Lisa Kubo gained about 50whp doin this to the exhaust side. Just wondering who has done it and what kinda gains you experienced.
Thanks

sti99civicsi

bump

PeakBoost

we just had them do a 50 trim TO4E and STG3 wheel .63 a/r(wheels and housings).
the only "problem" weve seen so far is that there is a significant amount of material removed from the wheels during this process and requires an extensive rebalance before reassembling.

we will have some back to back results of this on a 3sgte MR2 soon.

sti99civicsi

ah, didn't know that you might have to rebalance the turbo after doin this...good to know

.dave

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sti99civicsi &raquo;</TD></TR><TR><TD CLASS="quote">ah, didn't know that you might have to rebalance the turbo after doin this...good to know</TD></TR></TABLE>

I'd say you definitely have to rebalance the turbo after.

PeakBoost

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by one.6 &raquo;</TD></TR><TR><TD CLASS="quote">

I'd say you definitely have to rebalance the turbo after.</TD></TR></TABLE>

correct.
it just takes that much longer after it comes back from them...

should see some nice gains from it though.
we are looking into offering this as an option with all of the Garrett turbos.
ill post power gains as soon as they are available to us.
ken

sti99civicsi

Sounds great. Thanks.

JalopySiR

I may sound retarded, but what does extrude honing the wheels do? Please forgive my ignorance...
Also on the compressor, don't you want the tightest tolerances possible?
Hence, IHI's invention of the "Airick"(sp?) system...
Someone gimme a heads up, plz...

wantboost

iTrader: (2)

extrude honing the wheels, removes material from the wheels, lightening them, therefore reducing the rotating mass and decreasing spool time.

earl

OK, so Garrett has been making turbos for about 50 years or so? You guys think that you can run some wet grit thru a turbo and come up with a better product? You got to be kidding, right? If that were true, Garrett would be doing that to all their turbos already.
Don't ever believe that Kubo used to do that to her turbos. She was sponsored by Extrude Hone and would say whatever to promote them but never used them to modify a turbo. She may have used the product on an intake manifold but not much more.
If your turbo is too small, buy a bigger one.

turbosi03

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost &raquo;</TD></TR><TR><TD CLASS="quote">extrude honing the wheels, removes material from the wheels, lightening them, therefore reducing the rotating mass and decreasing spool time.</TD></TR></TABLE>

ok now I may be the idiot here, but sounds like your saying it changed the wheel size... if thats the case why not just select a different wheel trim?

by the way, when you change a wheel size your not just making them "lighter" there are many other variables that are also changing and sounds like this method changes those caracteristics blindly...

wantboost

iTrader: (2)

no, it doesnt change wheels size. it removes excess material from the wheel, kinda like knife edging a crank reduces weight, etc.

It thins out the blades, etc

Boostage

I see what earl is saying, these turbos are balanced for high rpms, I dont think I would want to chance the turbo grenading because it has less material and wasnt balanced right. if I needed the extra hp from my sc61 and I could'nt run anymore boost(although i cant imagine) I would try other things that didnt involve modifiing the turbo. like headwork and cams, that should help spool time and power.

JalopySiR

I'm gonna have to agree with the Earl here. It just doesn't make sence to start changing the shape, countour, etc.. of the compressor or turbine wheels. It also doesn't make sense to remove material from inside the compressor housing. Slack tolerances cause efficency to plummet.
The only thing I'd consider extrude honing would be the turbine housing.

Tony the Tiger

If the wheel gets extrude honed, what will happen to the wheel clearances?

Extrude honing the turbine housing and compressor housing sounds more realistic... but doing it to the wheels sounds like nonsense.

tokesGTR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tony the Tiger &raquo;</TD></TR><TR><TD CLASS="quote">If the wheel gets extrude honed, what will happen to the wheel clearances?

Extrude honing the turbine housing and compressor housing sounds more realistic... but doing it to the wheels sounds like nonsense.</TD></TR></TABLE>

Yea, I don't even know how the hell you would do that.

Bailhatch

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tony the Tiger &raquo;</TD></TR><TR><TD CLASS="quote"> ...but doing it to the wheels sounds like nonsense.</TD></TR></TABLE>

The whole idea sounds like nonsense/marketing BS. I can see how hand porting some areas of a turbine housing or a compressor cover could help, but extrude honing just doesn't seem like it would give any desirable results.

DaveF

there is no ******* way to extrude hone a "turbo wheel"

its theh housing's they were talking about extrude honing.