HY35 Compressor housing....

[NOSLO2PT0]

Apparently there are two comp. housings for this turbo. I don't know the breakdown on the years they came on, but it appears there is a downward facing and a side facing (basically 90 deg. elbow like a T25). Are the 2 covers interchangeable? Also, since my understanding is that the HY35 has the same compressor wheel as the 7 blade HX35, will a compressor housing from an HX35 work on an HY35 with a side firing outlet, since the HX35 all have downward facing outlets.

 

[donniekak]

Even if the compressor wheels are the same, the hy 35 compressor housing uses a v clamp, and the hx35 uses a large snap ring like a mitsu turbo.

 

[dsm-onster]

Beat me to it

 

[NOSLO2PT0]

Ohhh Didn't know that. Just thought the turbine housing was attached differently. So......then to answer my original question. Will the downward facing outlet and side facing outlet housings interchange?

 

[dsm-onster]

DOWT! I didn't pay attention to which side of the turbo you were talking about. No, the hy35 compressor housing should work fine with the 7blade hx35 compressor wheel and backplate:

Hy35:

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Hx35:

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[NOSLO2PT0]

So the 9cm housing has the same 5 bolt discharge like the 12cm housing on the HX's?

 

[JusMX141]

You can't use a HX35 compressor cover on a HY35 turbo...the backplates on the center housings are different sizes.

The HX and HY both use the same 5-bolt flange on the turbine housing outlet.

Even if the compressor wheels are the same, the hy 35 compressor housing uses a v clamp, and the hx35 uses a large snap ring like a mitsu turbo.

No, both the HX and HY turbos use a snap ring to hold the compressor cover on.

 

[dsm-onster]

Jus, I did not know the backplates for the hx35 and hy35 were different. I know the compressor wheels are the same part number between the 7blade hx35 and hy35.. . wonder why they would go through the trouble to engineer another backplate for the same compressor wheel and same a/r compressor cover.

 

[JusMX141]

Beats me, but they did for some reason.

Take a look at the pics you've posted.

 

[dsm-onster]

Gotcha. Not debating you at all . . .

 

[talondave]

No wonder they need a big 19cm oil drain, look how big the oil feed is!
Unless my eyes are messing with me, that looks like 6an feed?

 

[JusMX141]

^ ^

Exactly.

Now we can understand why there are most likely so many oil-related Garrett failures....these companies are doing everything they can to get more oil into the turbo using -4AN lines from the filter housing, but without the ability to properly drain, more oil is only going to cause problems.

Why anyone would offer an aftermarket oil line that is smaller than the OEM lines on our cars is beyond me.

 

[NOSLO2PT0]

Justin,
You have any idea why some HY35 compressors face down while some have a 90 deg. elbow on them? Are these 2 HY35 comp. housings interchangeable? I'm going to need one that faces down, but just about all the ones I've found for sale have the elbow. I've SEEN pics of HY35's with downward facing outlets, but very little info backing it up as being a true HY35.

Any insight?

 

[JusMX141]

It depends on the year of the truck they were removed from. Late '90's and Early 2000's Dodges had the turbo flange around cylinders 3 & 4, and the turbo was mounted high....sort-of next to the manifold, and they had a 90* adapter mounted to the v-band on the bottom of the compressor cover.

Newer HY35's and HE351's are mounted lower, and further back (between cyl's 5 & 6). Being that they're lower, there's no room for the 90* adapter so they cast it into the compressor cover.

All HY compressor covers are interchangeable.

 

[Morphius]

All 2003 and newer Holsets will have the cast 90 on the compressor housing. They will also have the 45 degree turbine outlet elbow that attaches via v-band clamp.

2003 and 2004 turbos are the HE341 (or HY35 depending you who you talk to).

2004.5 and 2008? (I'll have check when they dropped the 5.9) w/5.9L are the HE351.

 

[NOSLO2PT0]

It depends on the year of the truck they were removed from. Late '90's and Early 2000's Dodges had the turbo flange around cylinders 3 & 4, and the turbo was mounted high....sort-of next to the manifold, and they had a 90* adapter mounted to the v-band on the bottom of the compressor cover.

So, it appears I'll either need to grab a turbo from the late 90's/early 2000's or grab a compressor cover from the same years.

Thanks guys.

 

[aero_sallee]

All 2003 and newer Holsets will have the cast 90 on the compressor housing. They will also have the 45 degree turbine outlet elbow that attaches via v-band clamp.

2003 and 2004 turbos are the HE341 (or HY35 depending you who you talk to).

2004.5 and 2008? (I'll have check when they dropped the 5.9) w/5.9L are the HE351.

The 6.7 and VGT turbo came in the 2007.5 model year.

 

[NOSLO2PT0]

Looks like I got lucky and the turbo i'm getting doesn't have the elbow on it. The seller first made it sound like the elbow pointed towards the wheel (made me think the comp. housing has the elbow cast into it). But when he sent me pics, apparently there is a v-band connector, with a removable elbow on the end of the outlet. So, lucky for me, I don't have to source another comp. housing!

 

[knochgoon24]

I see I'm not the only one with interest in running the HY35. The 9cm^2 turbine housing should be pretty decent. I still think the HY35 will be the route I eventually take.

 

[NOSLO2PT0]

Only reason I chose the HY over the HX is that I'm gonna be running an auto car and want to be able to get it up on the converter without nitrous. The goals are simple, just build an 11 sec. car.

 

[knochgoon24]

Only reason I chose the HY over the HX is that I'm gonna be running an auto car and want to be able to get it up on the converter without nitrous. The goals are simple, just build an 11 sec. car.

I'll be happy with 12s on a 16g for now. My car is also and auto, and your reasons seems to be exactly the same as mine.

I just put the power adding on hold to pay attention to everything else that was being neglected (transmission, handling, and tires).

 

[NOSLO2PT0]

I got a 16G on the car now. Unfortunately, the car made it about 2 miles with the 16G on it before I spun a bearing of some sort. I figure I'm gonna build it once, and that's it.

 

[dsm-onster]

I think you'll still likely need a restall if you're thinking about running the stock converter. Maybe not. There's not too many who've run the hy35. But I think it will still spool a little later than the 16g. and auto guys complain about the 16g with a stock stall. A tight 3500rpm stall would be good IMHO. Still very streetable.

 

[JusMX141]

The HY in the factory 9cm T3 housing will spool later than the HX in a BEP DSM bolt-on housing.

The turbine wheel itself is indeed smaller on the HY, but the housing a/r and flange is still larger than the BEP DSM housing and the design of the HX wheel is a little more efficient at building boost (taller inducer).

For an auto, I think you'd see the quickest spool out of a HX35 in a bolt-on housing, although you may see a little more peak airflow from the HY35 in it's factory housing depending on what boost level you're running.

 

[NOSLO2PT0]

I've got a 4000 stall ready to drop in. I just hope I don't have to sit on the brakes all day to get it up there.