turbo trim question(0 trim)

[barryogen]

If someone said they had a

custom built Garrett t04e .58 a/r -0 trim with a stage 5 wheel

What the hell would that mean?

If it helps, it is on a 3.2L Golf.

[Jazza]

PN 10657 Complete turbocharger assembly including any standard 2-3/4” diameter TO4E compressor wheel (S-3, T-5, V-1, H-3) and Hi-Fi compressor housing, N, O or P trim turbine wheel and .58, .69, .81, or .96 A/R “on-center” turbine housing

from http://fastsaab.itgo.com/t04.htm - the third site google told me.

Im assuming its an O not a 0.

[barryogen]

thanks... that makes more sense than a "0" trim... was trying to figure out how the maths worked for that(was looking at equations for working out trim etc).

[Phothog]

N, O, P, Q Trim correspond to the sizes of the Turbine wheel
that is the Base % Exducer x some figure that garret has made up.

N Trim = 52mm Exducer
O Trim = 58mm Exducer
P Trim = 64.6mm Exducer
Q Trim = 68mm Exducer (this is really just a Turbonetics only shaft)

what he has got there is conflicting infomation
a Garrett Stg 5 Turbine wheel is about 62mm exducer
and he would only be telling half of the storey.
.58 is a turbine Air/Ratio the rest as above...
but no compressor info?

Chris.

[strx7]

Q Trim = 68mm Exducer (this is really just a Turbonetics only shaft)



Chris.

Unless things have changed in the past few years. Turbonetics themselves dont actually make turbo parts. There is only a handfull of manufacturers worldwide who make turbo parts - compressors, turbines, housings, cores etc. Garret, Ihi, Mitsubishi, KKK and Schwitzer from memory. Companies like Turbonetics, Greddy, Trust etc Just buy turbo components from those manufacturing companies and put together the 'combination' of parts and give it a name, T67, T78, T88 etc etc.

[Jazza]

Like laptops/prebuilt mass produced desktop computers.

Compaq,toshiba etc dont build ANY of the parts, except the bit of plastic that goes around it that they name

[steve murch]

Q Trim = 68mm Exducer (this is really just a Turbonetics only shaft)



Chris.

Unless things have changed in the past few years. Turbonetics themselves dont actually make turbo parts. There is only a handfull of manufacturers worldwide who make turbo parts - compressors, turbines, housings, cores etc. Garret, Ihi, Mitsubishi, KKK and Schwitzer from memory. Companies like Turbonetics, Greddy, Trust etc Just buy turbo components from those manufacturing companies and put together the 'combination' of parts and give it a name, T67, T78, T88 etc etc.

sorry to tell you this but they do make their own turbo parts, my good mate was the president for them for 12yrs,that's also why Garrett gave them a manufacturing award

[strx7]

When they first started out did they make their own???

Seems pretty odd they have the same parts (codes, sizes, names) as Garrett

[steve murch]

When they first started out did they make their own???

Seems pretty odd they have the same parts (codes, sizes, names) as Garrett

if you look close they cross referance between them and garrett, they also have differant shaft sizes to garrett in differant models as with there bb stuff to which you have to get from them as garrett doesnt make.
turbonetics turbine hsg weigh twice that of garrett and arnt finished off very well.
also the comp wheel tip hieghts can be different, and the comp covers are their own.
just like master power and afew others they all copy garrett yet garrett is far from the best you can buy

[rollaholic]

what would be the best you can buy? out of interest.

and what about HKS? i know they charge the earth for alot of their stuff, but i thought the whole point of their products was that they were developed and built in house, so to speak

[steve murch]

what would be the best you can buy? out of interest.

and what about HKS? i know they charge the earth for alot of their stuff, but i thought the whole point of their products was that they were developed and built in house, so to speak

HKS is made by garrett they dont touch them as far as manufacturing goes just put the name on it.
whats the best? how deeps your pocket is what it comes down to and the more turbo you run the more motor you need so its a double edge sword.
what i think is the best is from what ive seen over 20yrs of doing this and each turbo has its own merit.
garrett is very comon and thats why most copy it but the real good stuff isnt as easy to copy and when you do you find out why they cost so much.
for the most your wallet tells you what your going to buy.

[strx7]

Best bet for a turbo is to go and talk to Steve in person and see what he suggests and get him to build you one to suit your engines needs/requirements. Have done this on all my competition engines and have yet to have something which wasn't ideal.

[rollaholic]

im not in the market for a turbo, i was just interested to hear his opinion as one of the most well regarded turbo gurus out there.

(im still interested to know by the way )

[steve murch]

im not in the market for a turbo, i was just interested to hear his opinion as one of the most well regarded turbo gurus out there.

(im still interested to know by the way )

know which bit? whats the best?
this could on for a long time if i covered what ive found over the years,lol

[rollaholic]

i suppose theres as many 'best' turbos as there is engines. i guess what i was really meaning was - is there a manufacturer that stands out to those 'in the trade' like snap-on does when it comes to tools... that is, most people dont see the value in paying 5-10x as much for a tool that does the same job, but people who use them every day can see the benefits.

or to put it another way, when you want the best, and money is no object you buy XYZ turbo

[steve murch]

i suppose theres as many 'best' turbos as there is engines. i guess what i was really meaning was - is there a manufacturer that stands out to those 'in the trade' like snap-on does when it comes to tools... that is, most people dont see the value in paying 5-10x as much for a tool that does the same job, but people who use them every day can see the benefits.

or to put it another way, when you want the best, and money is no object you buy XYZ turbo

i would say ihi for out right quality but they all have their plus/minus depending on what your after and backup for parts,your wallet etc.
i could go on but i normally bore the crap out of people,lol

[finx]

blather away steve this is all interesting stuff!
behind almost every good import (note: almost) there's turbo. but theres not that many people that know as much about what goes into them and how that can change the overall outcome, compaired to the rest of the works that go on in the build. myself included.

[steve murch]

blather away steve this is all interesting stuff!
behind almost every good import (note: almost) there's turbo. but theres not that many people that know as much about what goes into them and how that can change the overall outcome, compaired to the rest of the works that go on in the build. myself included.

proboly this is one of the hardest things i can do is to relay on the info ive gathered in the past 20yrs.
but im working towards something that should help all but its alot of work

[cat007]

Unless things have changed in the past few years. Turbonetics themselves dont actually make turbo parts. There is only a handfull of manufacturers worldwide who make turbo parts - compressors, turbines, housings, cores etc. Garret, Ihi, Mitsubishi, KKK and Schwitzer from memory. Companies like Turbonetics, Greddy, Trust etc Just buy turbo components from those manufacturing companies and put together the 'combination' of parts and give it a name, T67, T78, T88 etc etc.

Also weren't Toyota, for a while there, the only manufacturer to make their own turbos?

[steve murch]

Also weren't Toyota, for a while there, the only manufacturer to make their own turbos?

that sounds about right, unfortunatly these days im unsure whos making what for who.
cutting corners in many ways is a sign of the times for alot to keep heads above water, i would still rather pay extra to get quaility and it doesnt take much more to do so.
but i guess when your making thousand of parts then 10c increase per item adds up.