Garage Storage Organization and Garage Cabinets

tonyz2897 · **Just Jumped on the Holset Bandwagon**

Ok, here's the story. A bunch of guys standing around a gas station parking lot bsing about cars. I was talking about the Daytona and mentioning what my plans are. One of my buddies is a diesel nut, and I happened to mention that there is some interest in running Holset turbos on our cars. He took off and came back with a nice HX-35 and quoted me a price I couldn't refuse. Now, my question is what do I do with the thing?

I mean it looks great on my coffee table and I know I could probably Ebay it for 4x what I have in it, but I'd really like to try to make it work first. My main concern is spoolup on an 8v 2.5. I do have a nitrous works wet kit I could "borrow" from the Camaro to help out a bit.
What I'm mainly wondering about is any changes I should make to the turbo itself such as swapping housings, etc to aid spoolup. Maybe just a "Holset Turbos for Dummies" guide from some of you guys that know a bit about them.
Thanks,
Tony

whistlin' · 12-31-2004, 07:57 PM

I know the HX35 on my truck can push 35 psi easy, but I don't know what you'd have to do with the 2.5 to get it to spool up. An HY9 from a newer 24 valve Cummins would be easier to spool up than the 12cm housing HX35.
As far as mounting it, I don't have a clue. I'm still looking forward to upgrading to a Garrett from the Mitsu.

Shadow16V · 12-31-2004, 08:01 PM

I had a Holset that came off of one of the newer 24V Cummins engines. I thought even my TIII was not big enough to spool that thing. Ended up selling it on Ebay to some guy who was wanting to turbocharge his Ford 300 Big Six and used the money I got from the Turbo to buy the T3-T4 Hybrid on my TIII now.

89acclaim · 12-31-2004, 09:44 PM

Well the ford guys are loving holsets. Since you have a HX35 why don't you make a manifold to take advantage of the dual scroll housing. You will want to pare 1 and 4 and 2 and 3 for the manifold. I suggest checking out turboford.org. I have been thinking of trying a holset if I could find one cheep. Best of luck man, and post how it goes.

Daniel Merrill

Andre Parker · 12-31-2004, 09:52 PM

I have an older H1c I am using on a hybrid conversion when I get the motor done. Get the 12cm housing. If you have a stock head, you may run into alot of lag. If you have a good ported head, then "maybe". With the 8v head, you may want the HY35 as stated earlier since it will spool up quicker. If the 2.3 8v headed ford guys are using them, we should have similar results. You will need a custom manifold as it will have to sit lower since the intake is on the same side. It should support 400-500 hp with the turbo you have now. 300-400 with the HY35.

xrattiracer · 12-31-2004, 11:02 PM

indeed there are lots of ford guys utilizing both the HY35 and HX35 holsets (and one or two using teh HX40 even i think).
shadow16v, you did something wrong. the HY35 you are talking about does awesome on my 2.3 8v ford. full boost (25+ psi) by 3500 rpm.
the compressor used on the HY35 and HX35 (yes its exactly the same) is efficient from about 200-500 hp, which is an amazingly broad map. extremely versatile line of turbos.
for the HX turbos, i would highly suggest doing as 89acclaim said and making a proper pulse manifold. testing by one of the guys on turboford showed gains of nearly 1000 rpm (yes one thousand!) in decreased spool time. this would have it spool sooner than a HY on a standard manifold.
welcome to the club!

Shadow16V · 01-01-2005, 12:39 AM

Quote:

Originally Posted by xrattiracer

shadow16v, you did something wrong. the HY35 you are talking about does awesome on my 2.3 8v ford. full boost (25+ psi) by 3500 rpm.

Actually I did nothing wrong. I was given a barely used Turbo and I sold it on ebay. With what I made off that Turbo paid for my T3/T4 Hybrid, external wastegate and part of my Spearco intercooler.

Una · 01-01-2005, 01:59 AM

If you have to make a custom manifold anyways, why not put a hybrid DOHC head onto there and really be able to take advantage of a monster turbo. That's what I'd do.

tonyz2897 · 01-01-2005, 04:30 AM

Quote:

Originally Posted by Andre' Parker

I have an older H1c I am using on a hybrid conversion when I get the motor done. Get the 12cm housing. If you have a stock head, you may run into alot of lag. If you have a good ported head, then "maybe". With the 8v head, you may want the HY35 as stated earlier since it will spool up quicker. If the 2.3 8v headed ford guys are using them, we should have similar results. You will need a custom manifold as it will have to sit lower since the intake is on the same side. It should support 400-500 hp with the turbo you have now. 300-400 with the HY35.

Where would I find a 12 cm housing? Would that be a bolt-on without changing the wheel? Thanks everybody for all the help and suggestions!
Tony

tonyz2897 · 01-01-2005, 04:38 AM

Quote:

Originally Posted by Una

If you have to make a custom manifold anyways, why not put a hybrid DOHC head onto there and really be able to take advantage of a monster turbo. That's what I'd do.

Well, it's strange I know, but I'd really like to see what I can get out of the 8v setup first. Plus I have a pretty short attention span, and I'm half afraid that if I take on a hybrid project, I'll lose interest before I get it finished.

Tony

whistlin' · 01-01-2005, 05:41 PM

Quote:

Originally Posted by tonyz2897

Where would I find a 12 cm housing? Would that be a bolt-on without changing the wheel? Thanks everybody for all the help and suggestions!
Tony

You probably already have the 12cm exhaust housing. 94-98 12 valves and some of the 24 valves came with the HX35 12cm exhaust housing. The wheel doesn't need removed to change the exhaust housing. Most the Cummins guys like to upgrade to a 14 or 16cm housing, so if you don't have a 12 it should be easy to find one.

tonyz2897 · 01-01-2005, 07:48 PM

I'm pretty sure this turbo came off of a 24v truck. Supposedly 2000 or newer.
The more I think about it, the more I'm leaning toward following shadow16v's advice. These things are selling pretty high on ebay, and a s-60 or s-70 might be better suited to a daily driver that sees limited track time. I know I'll be happier on the street with something that has a broader powerband.
Thanks,
Tony

89acclaim · 01-01-2005, 08:13 PM

http://dodgeram.org/tech/dsl/FAQ/turbo_faq.htm You can always resell it on ebay after you try it out. You know you want to try it.... Best of luck whatever way you go.

Daniel Merrill

bfarroo · 01-01-2005, 08:39 PM

Does the HX35 have a specific part # cast onto the turbocharger itself to look for and identify it by? I've been thinking about getting one of these for a 2.5 hybrid motor I'm in the process of building and want to keep an eye out for one.

Thanks,

Benji Farr
Green Bay WI
87 Shelby Z TII 15.2 @ 90.7
88 Shelby Z TI 2.2 auto
91 Shelby TI 2.5 5spd
http://bfarroo.tripod.com
http://www.extremepsi.org

01-01-2005, 10:27 PM

I have tried a turbo that was about the same size as the Holset (JD tractor) on my TminV and it didn't like it. It seemed like it was blowing exhaust through the turbin without doing much spinning.

It was fun trying, just lost about a month worth of time and skinned knuckes doing it.

Cheers

Tmax