Holset Turbos, PART 3

[IPT]

That ring is just a silencer to quite down the noise. I like to hear the turbo soo.... take it out!!

[Slippi84]

Originally Posted by IPT

That ring is just a silencer to quite down the noise. I like to hear the turbo soo.... take it out!!

It's already out and will stay out.

[JWoodley]

It's soo loud without the ring. About 3200 rpms it starts to sound like your getting passed by a 747.

[dsm-onster]

Originally Posted by Slippi84

So your saying that even though it will prevent surge better and make it sound sweet its' really not only overkill but a hadicap? Hmm well I might try it with and without this piece to see if I notice the difference. I'm gonna be trying something that I haven't messed with before on this car and I don't think I'll have to worry about spool.

Well, keeping the little ring cover on won't do anything to negate what the MWE groove provides good or bad. The cover just nulls the beautiful noise. I don't know what the MWE there or not will do with YOU setup. You don't have an option . Just enjoy it. They work just fine with it. And there is ZERO chance of surge with it. So a long life of whistle and power is in your future .

[aero_sallee]

Well the project is coming along. Still have a ton to do though. Engines in, working on rewiring the harness, redoing the interior and a bunch of other cosmetic stuff.
I ended up having to make a manifold adapter to fit the HE351VE in the car and to mount the external gate to prevent any overspeeding issues. Its got a non standard flange so no off the shelf manifold would work with it. Unfortunately I don't have the resources to custom make a manifold, or the money to have one made. Especially not knowing how well this will work out.

Here are some pics of the VGT hotside compared to the HX40 BEP that I was using before.





Test fitting the turbo with the old motor. There isn't much space with the huge hotside. Compressor will be clocked with the outlet up to allow the IC pipe to pass underneath. I wish the compressor housing had a normal outlet rather than facing the passenger side.


Compared to the 14b


Ugly as hell adapter, but should function ok and not flow too horribly.



Solid motormount I made using plastic that was identified as "nylotron" not sure if thats the real name but its tough as hell. Hopefully keep the turbo from meeting the radiator and wheelhop prevention.

[OneLove]

I decided to join the bandwagon. Im going to run a hx35 with the bep housing. If any one sees ant good deals on a turbo, that your not goin to get, send me a pm!

[JWoodley]

You should really consider a 1/2 size radiator for that setup.

[aero_sallee]

Originally Posted by JWoodley

You should really consider a 1/2 size radiator for that setup.

That is what I was originally thinking about doing. I didn't think I could fit it in there without one until I started mocking stuff up. Its not quite as close as it looks because the radiator is tipped back toward the motor a little bit since the upper brackets are off. I'm going to use the stock one until I prove that this is going to work, then we'll see where I go from there.

These turbos have started coming up on ebay so cheap. There are a lot of them for sale because the dodge dealers have started replacing them for carbon buildup issues. Gasoline and what I plan on E85 shouldn't have nearly the problem with that compared to a diesel engine. Its easy to get one in great shape under $250 now because no one wants to try doing anything with them. I picked up this one before they were common on there for 400 shipped and its brand new never been mounted on anything.

I just have to get the control situation figured out. Going to try messing with some wastegate actuators first and see how that works then go from there.

[dsm-onster]

Great to see you taking on a variable geometry housing. Looks like you grabbed it by the face! The welds don't need to look pretty, so long as they are solid, no loose slag, and they seal, and they don't muff up flow.

I forget. How does the VGT control mechanism work? Is it electric motor driven?

And welcome aboard the Holset Boat, OneLove.

[aero_sallee]

Originally Posted by dsm-onster

Great to see you taking on a variable geometry housing. Looks like you grabbed it by the face! The welds don't need to look pretty, so long as they are solid, no loose slag, and they seal, and they don't muff up flow.

I forget. How does the VGT control mechanism work? Is it electric motor driven?

And welcome aboard the Holset Boat, OneLove.

Thanks alot.

The one that is used on the stock application is. I didn't have any information on how to drive the actuator. It also disappeared when I moved a couple months ago. Haven't been able to locate it since. I will be trying a wastegate actuator on it as it has an external arm on it that I can attach to. I'll see how that works first and then go from there.

[OneLove]

Thanks Dsm-Onster lol.

Once you get dsm link you realize how much possibilitys there are
Im looking at ebay holsets, but im always skeptical about buying without seeing in person.

eBay Motors: 93 Dodge Ram CUMMINS Diesel TURBO CHARGER Holset H1C (item 140254565941 end time Aug-06-08 19:06:00 PDT)

eBay Motors: Holset HX35 HX35W Dodge Cummins Turbocharger Turbo (item 110276653878 end time Aug-10-08 17:17:04 PDT)

[dsm-onster]

Either are a great choice if you want a turbo that provides the same power, pump or race gas, asin the range of a 20g & 50-trim to gt30r.

The hx35 has a 2 mm larger inducer and better aerodynamics than the big h1c there. All me research has lead me to understand that it flows 2-3 lb/min more than the big h1c. It flows 52lb/min according to the holset compressor maps. It is VERY efficient at high boost. But you'll end up at a higher bid to win this, of course.

That h1c is a true big h1c. All big h1c turbos the MWE webbing, but no actual groove. The small h1c has no webbing and about a 4mm smaller inducer (that's alot smaller). The big h1c supposedly flows around 49-50lb/min. I have this turbo. And let me tell you that this is my favorite purchase, above dsmlink and my fp2x cams.

[TimG]

Blah blah blah. Does anyone have any dyno numbers or 1/4 mile times other than myself?

[Slippi84]

Originally Posted by TimG

Blah blah blah. Does anyone have any dyno numbers or 1/4 mile times other than myself?

Patience young panawan

[dsm-onster]

I have a 2.31sec 70-90 log at only 18psi. That's all. The closest track is in southern delaware about 2 hours away. Definately will be getting there when it cools down a little. I've also been fighting repeated headgasket issues. I've found a deep gouge in my cylinder head at the number 2 cylinder, going from inside the cc straight to an oil drain passage. I thought I was more careful pulling the head than that .

Did you see badman21's dyno graph?

[JWoodley]

I slung number one through the back of the block. I'm building an Eagle/Ross 6 bolt now. I made the numbers under my username (<---) at 24psi on 93 with a completely stock 7 bolt, low timing, and an uncalibrated MAF via DSMLink. It should be around 375 easy if I hadn't have been a tard.

When the built motor goes in, I intend on maxxing the car out on racegas.

[TimG]

Originally Posted by Slippi84

Patience young panawan

The holset thread #1 started in 2004. 4 years later and we only have a small handful of track results and a select few dyno results.

I had my Holset HX-35 going 11.60s with a botched transmission but after further review, I realized the compressor wheel was way too small and inefficient.

This year I have the HX-40 wheel on and I'll be heading to the track this week or most likely next week. I need to work on my tune and bump the boost up to 33-35psi and see how she goes.

Boys. The time has come to get these turbos spooling on the track or the dyno. There's just way too much talking about MWE, housings, compressor maps and much more and not enough real world numbers. As a DSMtuners moderator, I demand results. Less talk, more action.

Make sure you get videos as well.

[dsm-onster]

Yes, Tim. You've already done very well with a very affordable turbo using a turbine housing that doesn't even fit the application. And I agree. I really need to push myself more with this. Yet yoou msy not know all my other responsibilities. But, aye, sir. I'll get some results. Soon.

Curious about how you determined that the hx35 compressor is inefficent at 121 mph . How did you determine this?

I'll wager you'll notice your turbine wheel is far too small for the hx40 compressor. As a pure hx35 is already out of the 10% rule. It's a great turbine wheel. But it is already undersized for the hx35. This turbo was built for INSTANT 30 psi for a diesel with cold slow moving exhaust gas. You logged only 42ish lbs/min and showed only a 400ish whp trap speed. The compressor map alone should tell you more is there on the compressor end . I think you need an intake manifold upgrade. As do I. I'm breaking from shaping velocity stacks right now. I fully know that pump gas and 30 psi with water/meth injection is a tough b!tch to rule. I don't think you should write off the compressor just yet. But since it's done, we'll see the differences.

Also I truely believe that your divided turbine housing with a non-divided manifold is affecting your results. You're not just running a larger turbine housing, you're running a larger turbine housing with unneccesary turbulance and momentum changes.

[Slippi84]

I agree as well. I'm just waiting for this one key piece of my build to come in and I"m set.