holset hx35, good buy or bad buy

[my4ATEurV8]

i want to buy a holset hx35 from this guy! he says he is giving me a great deal on the mechanicaly sound unit for $500..... and brags that they are comparible to the gt35r.
i know that these come off a dodge diesel, and make some crazy hp#'s. any info on this would be great.

 

[RedTurboEclipse]

which of these holsets are comparable to a 16g? looking for a bolt on that doesn't cost too much that spools quick. don't know what to believe since someone said this "x" is comparable to a 16g, then another person says he is wrong?

 

[dsm-onster]

Like I said the hx35/h1e in the bep housing spools just like a 16g. IT is comparable. If someone secretly removed your 16g and swapped one of these under your hood your spool speed would be the same but you'd likely reach the same power earlier like mine. A holset that flows like a 16g likely would spool as fast as a 14b or faster.

If you want 16g street manners, then the hx35 or big h1c (1991-1994 intercooled cummins pickup) in the small bep housing is for you. Regardless of the fact that it outflows a 50-trim. They're easy to find, cheap, reliable, identical or better street manners to a 16g, and can be a bolt-on.

I can understant that it is so hard to believe that you can have both without nitrous or a stroker: 16g streetability/reliability and way more than 20g flow. But it's true and possible.

 

[1gDSM4g63]

I can understant that it is so hard to believe that you can have both without nitrous or a stroker: 16g streetability/reliability and way more than 20g flow. But it's true and possible.

Guess that people don't take our word they all think of double bb or 16g. It's not a widely known turbo but what I can say is you'll get a heck of it deal with the Holset for its price and reliability.

which of these holsets are comparable to a 16g? looking for a bolt on that doesn't cost too much that spools quick. don't know what to believe since someone said this "x" is comparable to a 16g, then another person says he is wrong?

Go the FFTEC if you don't take our word. You may also consider a Borg Warner S256 along with a Holset HX35.

 

[JayRolla]

While I have to agree that Jay is very wrong about the potential with pump gas of the hx35, it does not flow in the range of the 60-1. It flows in the range of the 50-trim. . . or about 3 lb/min more. And is MUCH more efficient. It can put down 500whp. And, with pump gas, it can show higher numbers than the "pump gas king" 50-trim. It is more comparable to a gt30r than any other but spools faster and is rebuildable, where any BB turbo is not. Transient response of the hx35 turbine and BEP housing is PHINOMINAL from personal experience. My h1c (very similar to the hx35) spools and respools as fast as my SMALL 16g. An evo3 16g can't touch it's flow potential, nor does it actually spool faster.

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Nevertheless, this is not a good deal for a used hx35 at all. Wait for cheaper. Ebay and some place like dieseltruckresource.com classifieds are your friends. However, they SHOULD be worth this used because of their advanced aerodynamics, durability, and wide operating range. How many turbos spool as fast as a small 16g and flow quite a bit more than than a 20g?

No one has almost 500whp from an evo3 16g except for Curt Brown. . .

Old Bullseye Performance hx35/bep housing dyno graph:

This is a very good post. I was over doing it a little by saying its comparable to a 16g but you said its about the same as a 50trim and in my eyes the 16g is comparable to a 50 trim. Not as effecient but the 16g has proven to push as much air and make as much power as the 50 trim.

Im knocking the turbo becuase I personally know someone that make 350whp on pump and that was the most they could get without knocking, granted I do live up in thinner air than most.

My buddy is about to run his hx-40 with the 7 fin exhaust wheel which is in the middle of the three and we are hoping for 500-550whp.

Ohh and there are others out there that have made power like Curt on a 16g, they just dont go making threads about it on the internet.

 

[dsm-onster]

So then does an 18g or 20g have more potential than a 50-trim . Yes, the evo3 16g will always be a great tubo. 100% bolt on for a 1g and flows very well for it's size (the diameters match well with a t3 super60-trim stage 1 turbine, tiny!). One could actually ask, why does it spool so slow for how small it is??!! But considering the flow potential (45 trim, 57 trim), it actually spools faster.

As you can see, I'm really simply talking about flow potential. Not horsepower potential. What you do with the flow is how much horsepower you make. The 50-trim flows more air than the evo3 16g by about 7 lb/min. The hx35 flows about 3 lb/min more than the 50-trim. Logically, any setup of which can make 490whp with an evo3 16g can make 550+ whp with a garrett 50-trim or hx35 or 20g. Any setup that can make 390whp with the evo3 16g can make 450+ whp with the hx35. Considering it spools as fast and is just as affordable and reliable, well what would the budget builder do? Buy all the supporting mods to push an evo3 16g to 450-500whp? Or spend much less to get the same result. The evo3 16g has a special place in dsm heritage. But as mentioned, the holset is here and the time has come for people to look at the proof. The dsm crowd is stubborn in a good and bad way.

It can be difficult not to see knock with any turbo at 350whp with pump gas. But I've seen 39-40lb/min consistantly with my h1c withOUT water injection running 93 octane 20 degrees timing up top and 11.1-11.2:1 a/f ratio through out the rpm range. No knock so far. The Hx35 is about the same, but more efficient. I know pumpgas in the west is terrible. Premium there performs more like midgrade, though they claim it's 91octane. He should keep at it, though. More is there.

 

[JayRolla]

So then does an 18g or 20g have more potential than a 50-trim . Yes, the evo3 16g will always be a great tubo. 100% bolt on for a 1g and flows very well for it's size (the diameters match well with a t3 super60-trim stage 1 turbine, tiny!). One could actually ask, why does it spool so slow for how small it is??!! But considering the flow potential (45 trim, 57 trim), it actually spools faster.

As you can see, I'm really simply talking about flow potential. Not horsepower potential. What you do with the flow is how much horsepower you make. The 50-trim flows more air than the evo3 16g by about 7 lb/min. The hx35 flows about 3 lb/min more than the 50-trim. Logically, any setup of which can make 490whp with an evo3 16g can make 550+ whp with a garrett 50-trim or hx35 or 20g. Any setup that can make 390whp with the evo3 16g can make 450+ whp with the hx35. Considering it spools as fast and is just as affordable and reliable, well what would the budget builder do? Buy all the supporting mods to push an evo3 16g to 450-500whp? Or spend much less to get the same result. The evo3 16g has a special place in dsm heritage. But as mentioned, the holset is here and the time has come for people to look at the proof. The dsm crowd is stubborn in a good and bad way.

It can be difficult not to see knock with any turbo at 350whp with pump gas. But I've seen 39-40lb/min consistantly with my h1c withOUT water injection running 93 octane 20 degrees timing up top and 11.1-11.2:1 a/f ratio through out the rpm range. No knock so far. The Hx35 is about the same, but more efficient. I know pumpgas in the west is terrible. Premium there performs more like midgrade, though they claim it's 91octane. He should keep at it, though. More is there.

Good points. I only say what I do because he was very disappointed with the new HX-35 they installed and after they ran it at the dyno the turbo came off and went up for sale. Ive heard so much good stuff on the net about it and it just didnt perform like they wanted. But like you said its how you use the turbo. That thing on some c16 or e85 would make 500whp with fast spool up.

The HX turbos do spool incredibly fast and have lots of engineering in them. To the OP if you could find yourself a hx-40 it would do a lot more for the price you are thinking of spending on that turbo. My buddy got his on craigslist for $50 and is buying the bullseye housing for only a couple hundred. Then you have a turbo pushing more air than a 35r and spools faster, with the unreliability of the ball bearing turbo.

If I remember right there are three hx-40's with different amount of blades on the exhaust turbine(6, 7, 8). The 6 blade pushes the most air and is the best one to get.

 

[dsm-onster]

The differences in the holset hx40s are on the compressor. 6 thru 8 blade. Actually the 7 blade flows the most. The super 40 is the 7 blade. The high flow pro 40 is the 6 blade. The 8blade flows around 55-57 lb/min according to the compressor map. It is comparable to a 60-1 compressor. Call ht turbo for the information. They offer a 7 blade hx40 as an upgrade to the 6 blade hx40. But both can flow at or more than the gt35r. . . And need I remind like Jay did. The spool is actually FASTER. Badman21 swapped a gt3076r for an hx40 in the small bep housing and he managed a jump from 550whp to 650whp (the edge of the potential of the gt35r). And his powerband didn't change. In fact, he made peak power earlier. Still, the hx40 spools to 20+ psi a little after 4K. Quite a bit later than an evo3 16g or hx35 or 50-trim. or 20g. I wouldn't bother with an hx40 unless you're looking for 500whp or more.

But the hx35 has been known to put down some great pumpgas numbers. I don't know what may be wrong with Jay's friend's setup. . . But, it's good to know that these turbos arn't absolutely perfect and washed in holy water , because this is the absolute first I've ever heard of a legitimate disappointment. And I'm not questioning it. But, there is a bit more than two 400whp hx35 powered 4g63s running pump gas.

 

[NW KGB]

i want to buy a holset hx35 from this guy! he says he is giving me a great deal on the mechanicaly sound unit for $500..... and brags that they are comparible to the gt35r.
i know that these come off a dodge diesel, and make some crazy hp#'s. any info on this would be great.

Here are some links to alot of info about the Holset Turbos.

http://www.dsmtuners.com/forums/turbo-system-tech/145691-holset-turbos.html

http://www.dsmtuners.com/forums/turbo-system-tech/192083-holset-turbos-part-2-a.html

http://www.dsmtuners.com/forums/turbo-system-tech/274459-holset-turbos-part-3-a.html