Pro-Mo no longer sells CompTurbo

[speeding-g60]

so what exactly is the problem with the turbo?

my buddy got one, and i want to be able to explain what to look for...

thks

[Thuppu]

I think the hot side turbine housings are crap, too big clearence between the turbine and housing. Repo has changed the housing to Garrett ones on the CT's he has sold.

[Billman]

If it is like on the picture you need to machine the mating surface chra to turbine housing to reduce the gap between housing to turbine impeller.

[Jamo]

If it is like on the picture you need to machine the mating surface chra to turbine housing to reduce the gap between housing to turbine impeller.

But then you reduce the outlet gap on the turbine, it doesn't work

[speeding-g60]

ok, i understand now... thanks

[QuattroFever]

So garrett hot housings will bolt right up to ct?

[fasterthenrs2]

Haa im pretty easy going but when I gave them all my motor specs I mean everything CC of im em etc, first turbo came in a nd did not make any boost, second made 20psi before7200 to 8500 36psi, two trips to dyno well over 2000$ wasted witch I wanted to put in a cams, ended up I did yelled @ Justin and one of the owners yeah pretty disappointing, no one ever looked at my specks they assumed I have same engine specks as Pavlos old car, LOL

[jade]

Haa im pretty easy going but when I gave them all my motor specs I mean everything CC of im em etc, first turbo came in a nd did not make any boost, second made 20psi before7200 to 8500 36psi, two trips to dyno well over 2000$ wasted witch I wanted to put in a cams, ended up I did yelled @ Justin and one of the owners yeah pretty disappointing, no one ever looked at my specks they assumed I have same engine specks as Pavlos old car, LOL

I have had 4 turbos and lots of wasted time due to them and shipping Costs

I call it lying when people tell you mis-truths, and I have lots from them

I would not recommend people to deal with them !

My View through experience

[Billman]

But then you reduce the outlet gap on the turbine, it doesn't work

The problem area as i see it is the transition between the turbine inlet and outlet.
I dont think that machining it would cause any issue!

http://www.s2forum.com/forum/attachment.php?attachmentid=30536&d=1300260216

[quattro84]

No Bill, look closer. The width of the tip and turbine radius is completely different compared to the supposibly matching turbine housing radius!
This will f0ck up turbine efficiency, spool up, and inevitably cause damage.

[A80Avant]

But wasnt that one of the strong points of comp? being able to match all kinds of turbine/comp impellers to give a customised engine spec turbo?

at least that was what made me want one back a year+ ago.

[repo]

They can for sure, just fitting a 63mm turbine wheel in to a housing ment for 50mm wheel, causes issues, as You very well can see from the picture.

And just like Quattro84 said, that turbo would never really spool up, and after that they will just suffocate to excessive backpressure, as the flow pattern around the turbine cone is completely f0cked.

[repo]

And yes, there is absolutely no way to fix this housing by milling. Only way would be to make a turbine wheel with 16mm tip height by grinding it from a bigger one, which most likely would be even more disastrous solution...

[Jamo]

exactly it aint a holset for sure

[A80Avant]

hahaha, now why do you say that Jamo?