Holset Turbos

[djsven]

Hi,

What's the difference between the HX40 with eight blades and the one with 6. Performance, boost, spool up, air flow?
A few mention the H1C, did you bolt this on using a flange? The reason why I ask is because I thought that you can't use the bull's eye HX35 housing with the H1C.
Can someone clairfy that, thanks.

Sven

 

[MattGVR4]

The 8 blade is smaller than the 6 blade, by 2mm IIRC. I know the 6 blade is much more desireable by the Cummins crowd.

 

[PSI TSI]

I bolted my H1c stock turbine housing to my Tdo6 17c adapter plate. But Its not a working setup yet I still need to see if it will clear my waterpipe on the turbine side. I'm not exactly sure if the h1c will work with the bullseye housing. The h1e is a no but the h1c is a yes and no depends on the wheel I think.

 

[defrag010]

The only thing that determines which holset will work in the bullseye housing is the size of the turbine. The H1E maglin had was too big, but there are other H1E's with different sized wheels. A housing from an HX35 can bolt on to an H1C housing and vice versa, so I don't see why the H1C won't work in the HX35 housing.. the turbine shaft/wheel for the HX35/H1C is the same part number.

 

[unlikely hero]

I've been following this thread closely and for the last week or so I've been debating on which turbo to choose. I'm done with my 2.4 hybrid and all I'm waiting for is the turbo now. Supporting mods 780's, dsmlink, FMIC, 255 etc etc. What I'm looking for is a streetable turbo. Not something with huge amounts of lag, but something i can also take to the track time to time. Does anyone know the spool time difference between the 35 and 40? I'm really divided between the two turbos.
=Jason-

 

[joeracer321]

I use a Holset Hybrid, an HX-35 turbine with an HX-40 compressor wheel.

 

[PSI TSI]

Hey guys I just started a yahoo group for holsets on dsm's. Here is the link I have My pics on there and will continue to upload them as I progress on my install. http://autos.groups.yahoo.com/group/DSMHolset/

 

[Morphius]

Hey guys I just started a yahoo group for holsets on dsm's. Here is the link I have My pics on there and will continue to upload them as I progress on my install. http://autos.groups.yahoo.com/group/DSMHolset/

Isn't that the point of this thread???

Why post it in two different places?

 

[unlikely hero]

Hey I was wondering you guys that bought a nonwastegated holset, how you are mounting the accuator? I bought a HIC w/out a wastegate and I'm tying to decide which would be best. I though about drilling into the compressor section and mounting it there, just making sure its secure and using some form of silcone so it won't leak. I know that it would disrupt the lamitar flow but i really don't know of anyother way. You guys have any suggestions?
=Jason-

 

[defrag010]

I was going to make a little flange type mounting dealy that will compress down with the V-band on my H1C compressor housing. I am gonna try to fab up a way to use the stock actuator from my 14B.

 

[PSI TSI]

Isn't that the point of this thread???

Why post it in two different places?

Good point never thought of that.

The only thing is whats to say this site wont go the way of DSM talk?



Defrag what are you planning on for a wastegate? I dont follow what you are saying about the actuator arm. is this if you use the bullseye housing?

 

[defrag010]

Yeah, that's assuming I end up getting the bullseye housing. I don't want to pay like 100$ (or however much extra it is) for their actuator.

I've been thinking of buying a 12cm HX35 wastegated housing to put on my H1C and use an adapter plate like you, but I'm worried about late spool. If the 12 cm housing has a divided inlet, I might try toying with blocking half of it off to make it 6cm and become a spool monster.
The #1 thing I'm worried about is the fitment of the H1C with the holset turbine housing on a stock dsm manifold. I don't know if it would be too close to the block or what.
Have you had a chance to mock yours up using the holset turbine housing?

 

[blue1]

Not sure what you mean by blocking half the housing wouldn't you have to reduce the size all the way in the housing aswell it bound to open up to 12cm in there somewhere? probably better to just try the HY35 with the 9cm open turbine housing!

 

[defrag010]

well, it would be easier to try the HY35 if I hadn't already bought an H1C and I had 200+$ to spend on an HY35. I would just buy a bullseye housing at this poing instead of getting the HY...
But yeah, Like PSI TSI mentioned earlier, If I could blockoff one of the openings at the top and bottom of the housing, it would cut the cross section in half, which would almost cut the a/r in half. I'm not going to be running over 20 psi or insane power levels on my H1C, so the best turbine housing flow isn't the #1 priority. I'm going for early spool.

 

[PSI TSI]

Yeah, that's assuming I end up getting the bullseye housing. I don't want to pay like 100$ (or however much extra it is) for their actuator.

I've been thinking of buying a 12cm HX35 wastegated housing to put on my H1C and use an adapter plate like you, but I'm worried about late spool. If the 12 cm housing has a divided inlet, I might try toying with blocking half of it off to make it 6cm and become a spool monster.
The #1 thing I'm worried about is the fitment of the H1C with the holset turbine housing on a stock dsm manifold. I don't know if it would be too close to the block or what.
Have you had a chance to mock yours up using the holset turbine housing?

I havent had the chance to mock it up Yet. I got a bare head from my buddy on the weekend and Ill be bolting it to an old 2g 7bolt soon. I will let you know what happens.

Blue1. If you block half of the dual scroll why would it need to be filled completely ? aslong as the exhaust doesnt flow down the second scroll why would it matter? Its something I have to try to satisfy my curiosity. if it doesnt work oh well the housing is useless to me anyways.


I have opend up the scroll area now to block the second one off, but decided to wait till I get a external wastegate. I think I want to mount it to the side of the turbine housing sort of the way the fp 3065 is.

 

[defrag010]

I was about to ask what you were going to do for a wastegate...

Are you going to cut down the divider and make the blockoff become a smooth transition into the scroll? I think I'm going to go with the 12cm and block off the second scroll about halfway down into the housing so there isn't a big ass roadblock. Plus, I won't have to use my 1G o2 housing, and I can use the 3" elbow that comes on the holset housing and make my own downpipe.

I had a Hell of a time trying to get my turbine housing off of my H1C. One of the bolts won't come out all the way because the oil inlet is in the way, so you have to loosen it up and break it loose, then loosen up the bolt until the housing comes off.

 

[blue1]

PSI TSI about 4" down from the turbo mount flange the divider will allow your 6cm moded exhaust air back into a 12cm cavity which will possibly slow your gas flow down dramatically and give it a crap flow. You could end up with very high speed air to part of the wheel and near stationary air on the other part, if you have your housing off have a look the divider will allow your drive air into the other 6cm of cavity. 12cm a/r is a measured size throughout the hole housing. Hey i might be totally wrong but thats my thought. Could be we look at things different in Aust" cause we are upside down compared to you guys.

 

[defrag010]

He mentioned to me in a PM that both ends of the scroll would be blocked off so no worry on that one. I always understood it as the size of the housing wasn't the volume, but rather the cross sectional area before the turbine. Then you use the turbine diameter and other specs to determine the a/r.

 

[PSI TSI]

I could fill the whole scroll in if i want to but I will try to block the entrance first. I think the exhaust will want so baddly to leave the turbo that it will flow out the exit before it goes into the blocked off cavity I really dont think it will make a whole lot of differance being open down inside. If it is oh well Ill weld it up too.

Defrag. I already bored the scroll out like you mentioned. Ill try to loa the pics onto the group I started. I seem to have problems uploading the stupid pics Take forever most of the time. or never.

 

[unlikely hero]

I'm having a hard time determining which housing I will need. Bullseye is almost impossible to get ahold of someone, i've tried over a dozen times and always no answer. I have an H1C but the exhaust blade size is like a little bit under 2.5in but I was told thats the hx40 housing? So how does that make sense? Any suggestions/help? Thanks
=Jason-

 

[1029TSG]

You can reach me almost anytime at 704-575-0787 or at [email protected]

 

[defrag010]

PSI, did you physically "bore" the inlet out so it is round, or do you just mean you cut down the separator?
I'd be interested to see the pics.

 

[PSI TSI]

PSI, did you physically "bore" the inlet out so it is round, or do you just mean you cut down the separator?
I'd be interested to see the pics.

No I didnt bore it round. I just bored out the divider. I actually plasma cut it out, then ground the rest to smooth it out. I used a Ginding stone to do it. I also used this method to port my 14b aswell as my 2g ex manifold last spring, it works really well. Ill take pics of the stone it is the best thing ever to port a 14b.

 

[unlikely hero]

You can reach me almost anytime at 704-575-0787 or at [email protected]

I just called today and no answer, this has to be the 6th time I've tried. I'll try again tommarrow.
=J-

 

[1029TSG]

Sorry, we have been so busy lately thanks in part to some of you. If anyone cant reach us just leave a message and we will return your call. You can also reach any of our staff at our home office at 231-788-5209