Cummins Holset hx-55

[Syris]

A guy that I have class with Has a 12 valve cummins diesel and has a holset hx-55 and he said he would sell it to me if I wanted, he knows I have the Supra. My question is across the table how well would this turbo be? Also what kind of price range should I be lookin at?

 

[Mr.PFloyd]

IIRC that has one huge A.R. By well do you mean spool? whp?
how long is it used? Burn any oil? rebuilt?
-Thomas

 

[SySt]

A diesel turbo is a horrible thing to put on a gasoline engine. Due to the high compression of a diesel engine compared to a gasoline engine. The design of the exhaust and compressor housings is quite different in principal. Basically, either you would not be able to spool the turbo at any reasonable rate/rpm or you would spool it quick but run past it's efficiency very quick.

 

[MDCmotorsports]

A diesel turbo is a horrible thing to put on a gasoline engine. Due to the high compression of a diesel engine compared to a gasoline engine. The design of the exhaust and compressor housings is quite different in principal. Basically, either you would not be able to spool the turbo at any reasonable rate/rpm or you would spool it quick but run past it's efficiency very quick.

You shoosh right there.

Most if not all turbos on the market today that make big HP are from the diesel family.

The Hx55 makes ALOT OF POWER, the problem is that unlike the Garrett family, there isn't a bolt on rear housing thats smaller. Your only option is to find something else and have it machined out.

The hx55 rear housing is giant. I would say you'd be lucky to see full boost by 5krpm on a 7m with it.

Now, the hy35 with a hx40 comp wheels stuffed in it is a great idea.....

 

[SySt]

I was referring to an unmodified turbo off a diesel. Of course you can change the housing sizes to get it to work right.

 

[Syris]

Would you recomend a different rear housing for it if it came for the right price?

You shoosh right there.

Most if not all turbos on the market today that make big HP are from the diesel family.

The Hx55 makes ALOT OF POWER, the problem is that unlike the Garrett family, there isn't a bolt on rear housing thats smaller. Your only option is to find something else and have it machined out.

The hx55 rear housing is giant. I would say you'd be lucky to see full boost by 5krpm on a 7m with it.

Now, the hy35 with a hx40 comp wheels stuffed in it is a great idea.....

 

[SySt]

Yes, a smaller exhaust housing would benefit you. I do not know the specs on the turbo, however something tells me the compressor will flow more than 500hp decently within it's efficieny range.

 

[Mr.PFloyd]

Would you recommend a different rear housing for it if it came for the right price?

i googled the turbo, that AR is freaking huge. Get something smaller.

 

[MDCmotorsports]

Would you recomend a different rear housing for it if it came for the right price?

Yes. Most holsets are pretty indestructable turbos.

 

[Syris]

any off the top of your head? This guy is a cummins crazy, hes got a lot of parts just layin around

 

[MDCmotorsports]

The most common (and it will flow enough for 450hp and spool like a mother)is the hy35w, and the hx40w (although it tends to have a large exhaust housing).

 

[supra90turbo]

hy35w is a great turbo. I plan to get one for an upcoming project.

 

[mk3713]

Yeah It is a great turbo if my flanges get finished (hint hint John) mine should be done in the next couple of weeks. I got mine for free my dad had it around his shop not too many miles on it. Free sounds like a good price.

 

[Syris]

So I should skip on the 55 and see if he has a hy35w? Or get the exhaust housing off of it?

 

[RacerXJ220]

I have a Blitz manifold that would work well for you in that application!

The Holsets are tough.

 

[Boost_happy]

I'm currently in the process of installing a holset wh1c with a 12cm exhaust housing, should work fairly well i'm thinkin.

 

[MDCmotorsports]

I'm currently in the process of installing a holset wh1c with a 12cm exhaust housing, should work fairly well i'm thinkin.

Might want to find a 9cm housing from a hy35 and have it machine out to fit the larger turbine.