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Holset Turbos, PART 5

Posted by Morphius, Nov 8, 2008

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  1. dsmmatt28

    dsmmatt28 Proven Member

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    Joined Nov 24, 2007
    Arlingotn, Texas
    Thats a big ass turbine housing. Its going to have some lag for sure.
     

    386  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  2. matt98eclipse

    matt98eclipse Proven Member

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    Joined Aug 15, 2006
    mesa, Arizona
    My plan was to route the wastegate back into the exhaust then do a 3inch right out the front drivers side bumper. I still need to order the alternator relocation kit. I think it would sound nice with the new set of BC 272's i just got.
     

    666  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  3. 95GSXCO

    95GSXCO Proven Member

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    Joined Mar 15, 2006
    Sterling, Colorado
    Is that a Ebay header? If so I had the same problem with a 50 trim. One way I have seen it be fixed is to buy just a t3 flange and shave one side to make a wedge. It sucks because you will have to readjust your exhaust because you will be mounting your turbo 1/2 lower.
     
  4. matt98eclipse

    matt98eclipse Proven Member

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    mesa, Arizona
    It is in fact a ebay header i figure what the hell ill give it a shot and see what happens. What your saying might just work.
     

    666  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  5. Raymos24

    Raymos24 Proven Member

    253
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    Joined Jan 22, 2007
    Boston, Massachusetts
    Hey guys...Quick question about an oil line. I have an H1E in a BEP bolt-on housing and I have been literally everywhere to buy the oil feed line. I used to have a garret style turbo so I have the return line but not the feed line. The H1E has a 3/8" oil inlet and thats it so the adapter kit on extremempsi seems not to apply to it. Any help would be appreciated I have been to countless autozones and home depots to try to find an adapter. The end of my oil feed line right now i think is 1/8". Thanks for any help and sorry for the ridiculously long post.
     
  6. dsm-onster

    dsm-onster DSM Wiseman

    8,218
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    Joined Jul 11, 2004
    Bloxom, Virginia
    Matt, find a used hx35 turbine housing or buy a blown to he!! hx35. No need to even have fins left on the wheels. Use the turbine housign. It could very well clear as it is a 12 cm^2 turbine housing not a 21cm^2 housing. It will bolton if you can find 2 more bolts and grind down some washers on one side for clamping. The hx35 and h1c wheels are the same. And the hx35/h1c turbine wheel with the 12cm^2 turbine housing with the divider radiused and portmatched to the garrett flange will flow PLENTY to max out any h1c compressor wheel. Your spool will be 20ish psi by about 4K in 3rd gear, too.
     

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    1990 Mitsubishi Eclipse GST
    manual · 1G DSM
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  7. GST95

    GST95 Proven Member

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    Joined Jun 23, 2002
    Bristol, Indiana
    You still might have to use a spacer between the head and manifold. It will depend on how the manifold is shaped. I had to do this with my ebay header and wh1c with 12cm housing. You just need a flange, longer studs and an extra gasket to space it out. On my manifold, the turbo flange was turned slightly for compressor clearance which caused lack of clearance for the exhaust outlet. :notgood:
     
  8. dsm-onster

    dsm-onster DSM Wiseman

    8,218
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    Joined Jul 11, 2004
    Bloxom, Virginia
    Still recommend the the 12cm^2 housing vs. the 21cm^2 housing :D
     

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    1990 Mitsubishi Eclipse GST
    manual · 1G DSM
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  9. Wicked95AWD

    Wicked95AWD Proven Member

    118
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    Joined Sep 26, 2005
    Fayetteville, Arkansas
    Roughly how fast should an hx40 pro w a divided t4 mani and 18cm^2 housing spool? I'm shooting for 4k rpm spool and 650+whp on a 2.4 liter. Should I go with a smaller housing instead?
     

    900  0

    1995 Mitsubishi Eclipse GSX
    manual · 2G DSM
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  10. dsm-onster

    dsm-onster DSM Wiseman

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    No one knows at all. No one has done this before. I'd IMAGINE it would spool about as fast as the bolton BEP housing with the hx40 turbine wheel being that the 18.5cm^2 and 19cm^2 turbine housing has individual volutes with a critical area about as large as the bep bolton housing.
     

    2K  0

    1990 Mitsubishi Eclipse GST
    manual · 1G DSM
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  11. GST95

    GST95 Proven Member

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    Joined Jun 23, 2002
    Bristol, Indiana
    x2 :thumb:
     
  12. Wicked95AWD

    Wicked95AWD Proven Member

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    Fayetteville, Arkansas
    In that case, I guess I'll be a willing guinea pig. The hx40 pro is balanced and on it's way back to polk now. I should have dyno results in two or three weeks.
     

    900  0

    1995 Mitsubishi Eclipse GSX
    manual · 2G DSM
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  13. TimG

    TimG N/T Moderator

    1,161
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    Aurora, ON, Canada
    I run a 12cm2 housing and it's definitely laggy. I'd IMAGINE a 21cm2 housing might not even spool.
     

    787  0

    1993 Eagle Talon TSi AWD
    11.315 @ 132.140 · 1G DSM
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  14. Wicked95AWD

    Wicked95AWD Proven Member

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    Fayetteville, Arkansas
    Twin volutes should improve volumetric efficiency and part throttle response while alleviating some lag and preserving top end power. A single large open scroll mani and hotside would likely be pretty laggy in comparison.
     

    900  0

    1995 Mitsubishi Eclipse GSX
    manual · 2G DSM
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  15. matt98eclipse

    matt98eclipse Proven Member

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    mesa, Arizona
    Thanks matt. I will keep my eye out on a 12cm housing. If anyone has one they are willng to sell pm me!
     

    666  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  16. talonDSMerr

    talonDSMerr Proven Member

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    Greenwood, Indiana
    I think I have one I can get rid of. It's off a wh1c. How can I tell if it's 12cm?
     

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    1991 Eagle Talon TSi AWD
    · 1G DSM
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  17. matt98eclipse

    matt98eclipse Proven Member

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    mesa, Arizona
    Could you send me a pic of it?
     

    666  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  18. matt98eclipse

    matt98eclipse Proven Member

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    Joined Aug 15, 2006
    mesa, Arizona
    Hey wiseman the wh1c and h1c have the same turbine wheels right? If so member talondsmerr has one he would sell me but im wanting to run a a external wastgate setup how would this work being the wh1c is factory internal wastgated. Would i need to buy a different type of flang. Im really wanting to run a 3inch vband exhaust.
     

    666  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  19. 95burgundyesi

    95burgundyesi Proven Member

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    Joined Feb 8, 2006
    Rockford, Illinois
    I don't know where to post this so I am adding it where I think it fits best, I am trying to get a group buy on holset bolt on housings for hx35 and 40s going, I am getting one no matter what but figured witha ll these people attempting and buying holsets I could get a few names on a list once I get a hear back. Should be coming shortly :D
     

    Street Build 1K  14

    1999 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
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  20. We're on Boost

    We're on Boost Proven Member

    926
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    Joined Aug 25, 2007
    Seattle area, Washington
    Hey guys, I figure a bullseye .55 a/r turbine housing would have a "nozzle" area of about 7.3 square cm. That's just from my calculator and the fact that Robert Young says his FP30 turbine housing is 9 sq cm or about .68 a/r. Anyway, even if you had one apart the actual A would be hard to measure, right? But do you think 7.3 sq cm sounds about right for the bullseye housings?

    Gary
     

    4K  19

    1990 Eagle Talon TSi AWD
    650 whp · 510 lb/ft · 1G DSM

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    1990 Eagle Talon TSi AWD
    manual · 1G DSM
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  21. talonDSMerr

    talonDSMerr Proven Member

    751
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    Joined Aug 19, 2007
    Greenwood, Indiana
    It would probably have to wait. From the sound of things, TimsTurbos is all out and TheTurboTrader had only 2 left when I called and ordered mine yesterday. The things are flying off the shelf full price, I don't think they need to do a group buy..
     

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    1991 Eagle Talon TSi AWD
    · 1G DSM
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  22. dsm-onster

    dsm-onster DSM Wiseman

    8,218
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    Joined Jul 11, 2004
    Bloxom, Virginia
    But it would be nice of them. And they would be able to hit the market hard with their next production batch. They could make a huge batch really worth their while with a good group buy.

    We're on Boost, we cant really compare the a/r numbers across brands. the 7cm^2 dsm turbine housing has an a/r ratio close to 0.55 a/r. but the R is much smaller than the BEP bolton R. You need to actually get an AREA at the same point along the volute between housings to make a comparison. Actually all that matters is the area, since it is only that which changes the angle of the exhaust flow over the blades; not the inlet hole area. There's comparison pics floating around here of the BEP bolton, FP30, 7cm^2 MHI, and .63 a/r bolton PTE areas at about the same point on the volute. The BEP area is much bigger than the 7cm^2 and the pte bolton. The FP30 is larger still. The BEP has a centered volute, while the PTE and MHI are offcenter. So not only is the MHI 7cm^2 housing have a smaller area, it has a much less efficienct design that henders flow and spool. This is why swapping from the MHI to the BEP bolton housing for my 18g had very little effect on spool but flow still increased.

    ----------------
    EDIT. . . . .

    [​IMG]

    That little bulge to the left in the critical area of the MHI volute has the blades in it so that part isn't included in the volute area.
    -----------------


    Wicked95AWD, twin volutes act as one big volute (the sum of the the two small volutes) when runnign a nondivided runner manifold.

    Matt98eclipse, All wh1c turbos from the factory came with wastegated 12cm^2 turbine housings. The wastegated version I think comes with a vband outlet 100% of the time. You just need a way to keep the gate shut as it only vents one volute (NOT good for performance or boost control with a gaser). Here is one option.

    Wh1c turbine outlet:
     

    Attached Files:

    2K  0

    1990 Mitsubishi Eclipse GST
    manual · 1G DSM
    Loading...
  23. Wicked95AWD

    Wicked95AWD Proven Member

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    Joined Sep 26, 2005
    Fayetteville, Arkansas
    Matt, I know that twin volutes act as one large one when running a nondivided mani. I was subtly trying to suggest that the reason TimG found the 12cm^2 to be laggy was probably because he is using an undivided t3 manifold. If he were to switch to a twin scroll (divided) manifold I would be willing to bet that the lag he is experiencing would drop significantly.
     

    900  0

    1995 Mitsubishi Eclipse GSX
    manual · 2G DSM
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  24. SpeedAddict62

    SpeedAddict62 Proven Member

    229
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    Joined Jun 5, 2006
    Corvallis, Oregon
    So what do you think would be the optimal turbine housing for a HX35 on a 2.0L with a divided mani? I already have a 12 cm^2 housing and was planning to run it...but I'd be willing to trade someone for a larger housing and spool would still be reasonable and top end flow improved.

    Also, does the wh1c turbine outlet bolt to the hx35 housing? I would love to find one, it would save me having a custom flange made and that v-band would be perfect.
     
  25. dsm-onster

    dsm-onster DSM Wiseman

    8,218
    89
    Joined Jul 11, 2004
    Bloxom, Virginia
    Yes the wh1c will work. See my above post about what you may need to do.

    The 18cm^2 housing found on the big and small h1c turbos has individual volute size about the same as a bep bolton volute. You should have similar spool (or perhaps a little better) with mcuh better VE up top, because of virtually no back pressure issues.

    Oh I see :thumb:. I think tim knows that too :) .
     

    2K  0

    1990 Mitsubishi Eclipse GST
    manual · 1G DSM
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