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Upgrading Turbocharger

Discussion in 'Tuning' started by , Mar 31, 2004.

  1. s3bow
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    s3bow Member

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    [Mar 8, 2005]
    What injectors and maf did you use Rich ? Made a d/pipe for mine,so I can testify to how tight it is with the prop and transfer box. They put the bellows a little too low so it keeps rattling against the heat shield around the bulkhead. Tried the dogbone mount but need to do some re-aligning.

    Chris.
    #41
  2. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Mar 8, 2005]
    [ QUOTE ]
    What injectors and maf did you use Rich ? Made a d/pipe for mine,so I can testify to how tight it is with the prop and transfer box. They put the bellows a little too low so it keeps rattling against the heat shield around the bulkhead. Tried the dogbone mount but need to do some re-aligning.

    Chris.

    [/ QUOTE ]

    Using Bosch 440cc Injectors @ 4bar and a TT MAF housing with the original sensor.

    My D/P is VERY tight, but it doesnt rattle one bit!
    #42
  3. s3bow
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    s3bow Member

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    [Mar 8, 2005]
    No need to change my FPR or maf then ? As I said earlier, thinking of the K-26, this runs an external w/g so would have quite a complicated d/p. Plenty of clearance to get the extra pipework in though. Spoke to VST a few times. He did his own install of the MTM kit. Said it was tight where the oil drain came out of the turbo. Had to file a bit away on the transfer box.

    Chris.
    #43
  4. Ryanc
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    Ryanc Active Member

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    [Mar 8, 2005]
    I think qst has to adapt the mtm manifold to fit rhd cars so i'm not sure if it will fit??
    Addo is using a gt28r and not the rs so mat must have one of these?
    #44
  5. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Mar 8, 2005]
    [ QUOTE ]
    I think qst has to adapt the mtm manifold to fit rhd cars so i'm not sure if it will fit??
    Addo is using a gt28r and not the rs so mat must have one of these?

    [/ QUOTE ]

    Ryan,

    The QST manifold is a mirror image of the MTM one, and the downpipe is also completely different. VST posted a pic up somewhere in here a few months back.

    Rich
    #45
  6. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Mar 8, 2005]
    Here is QST kit:
    [​IMG]

    Here is MTM kit
    [​IMG]
    #46
  7. imported_bubstar
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    imported_bubstar Guest

    [Mar 8, 2005]
    A great thread everybody . Very very interesting . Answered a lot of questions for me. /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif

    I wonder if anyone would like to comment on the power claims in this thread??
    A4 190ps Thread

    Cheers BUB /ubbthreads/images/graemlins/ok.gif
    #47
  8. Punisher
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    Punisher New Member

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    [Mar 8, 2005]
    [ QUOTE ]
    A great thread everybody . Very very interesting . Answered a lot of questions for me. /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif /ubbthreads/images/graemlins/beerchug.gif

    [/ QUOTE ]

    err... and me, i'm the original poster. /ubbthreads/images/graemlins/grin.gif
    #48
  9. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Mar 9, 2005]
    [ QUOTE ]
    @Rich, the braided hoses in the corner, they the oil feed and return ? The other must be a water pipe yeah?
    Also, what do you reckon the two springs are for ? I see the dogbone mount in there, whats the other bush and sleeve for ?

    Chris.

    [/ QUOTE ]

    Sounds about right! Springs, at a guess would be for the wastegate. All the 3 bushed are the dog bone mount!
    #49
  10. s3bow
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    s3bow Member

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    [Mar 9, 2005]
    Didn't have the round bush and sleeve with the dogbone mount I had from you .

    Chris.
    #50
  11. s3bow
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    s3bow Member

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    [Mar 9, 2005]
    Where does the round one go then ?

    Chris.
    #51
  12. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Mar 9, 2005]
    [ QUOTE ]
    Where does the round one go then ?

    Chris.

    [/ QUOTE ]

    Where it bolts to the 'box.

    [​IMG]
    #52
  13. s3bow
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    s3bow Member

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    [Mar 9, 2005]
    Rich, looking at the two pictures, do you think the only thing handing the manifolds is the angle the external w/g comes out at ?

    Chris.
    #53
  14. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Mar 10, 2005]
    [ QUOTE ]
    Rich, looking at the two pictures, do you think the only thing handing the manifolds is the angle the external w/g comes out at ?

    Chris.

    [/ QUOTE ]

    It looks to be the case... Not sure if the turbo mounting flange is angle at all though.

    Rich
    #54
  15. s3bow
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    s3bow Member

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    [Mar 11, 2005]
    Yes, looks like the turbo mounting flange on the RHD kit is rotated a few degrees clockwise. The opposite way on the LH.
    Do you know if Dialynx do anything with a manifold ? They've used the K-26 for a long time.

    Chris.
    #55
  16. imported_Feel
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    imported_Feel Guest

    [Mar 14, 2005]
    *cough*

    s3mon? How did it go?

    Or more importantly, how does it go?
    #56
  17. simonelman
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    simonelman Member

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    [Mar 23, 2005]
    The turbo was held up at customs for a while and now I have it I`ve been busy at work .

    The car is booked in for the 4 of April so we will have to wait till then.

    SimonS3MTM
    #57
  18. Ryanc
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    Ryanc Active Member

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    [Mar 23, 2005]
    good luck to you simon,but seriously isn't there anyone cheaper/nearer that can fit it for you?
    #58
  19. imported_VERN
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    imported_VERN Guest

    [Mar 23, 2005]
    Thanx simon, keep us informed matey /ubbthreads/images/graemlins/wink.gif
    #59
  20. simonelman
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    simonelman Member

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    [Mar 24, 2005]
    Hi Ryan
    I want a RR before and after and we all want to know the numbers. /ubbthreads/images/graemlins/cool.gif

    Plus if there is a problem they can sort it out sometimes trust is worth more than money.

    SimonS3MTM
    #60
  21. AL_B
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    AL_B Active Member

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    [Apr 1, 2005]
    Has anyone had AmD (or other tuner) fit the Jabba kit, rather than Jabba themselves?

    Nothing against Jabba, just wondering.

    I was thinking it would be good to have a "full boost" map and "lowest boost" map, on the big-turbo upgrade. Presumably AmD would be able to do this via loading the custom maps onto their switching dongle (?).

    It would be an alternative to Jabba's variable boost controller that has to wired in and hidden somewhere under the dash.

    ...if only I had the money... Zzzzzzzzz


    AL
    #61
  22. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Apr 1, 2005]
    [ QUOTE ]
    Has anyone had AmD (or other tuner) fit the Jabba kit, rather than Jabba themselves?

    Nothing against Jabba, just wondering.

    I was thinking it would be good to have a "full boost" map and "lowest boost" map, on the big-turbo upgrade. Presumably AmD would be able to do this via loading the custom maps onto their switching dongle (?).

    It would be an alternative to Jabba's variable boost controller that has to wired in and hidden somewhere under the dash.

    ...if only I had the money... Zzzzzzzzz


    AL

    [/ QUOTE ]

    AmD mapped mine for me, but obviously not switchable. I guess AmD could put a low boost and high boost map on the dongle/ecu but would mean paying for 2 custom remaps...Wont be cheap.

    Rich
    #62
  23. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Apr 1, 2005]
    [ QUOTE ]
    Wilko has the jabba supplied IHI kit, fitted by JBS and mapped by Revo IIRC...

    Dunc

    [/ QUOTE ]

    Correct...Revo have some good software for big turbo.

    Rich
    #63
  24. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Apr 2, 2005]
    [ QUOTE ]
    @ Rich, you sometimes talk of a 'P20' housing. Whats that then ?

    Chris.

    [/ QUOTE ]

    The standard hot side on the VF-34 has a 'P18' Housing... The P20 is just slightly larger therefore allows more air to be passed. Top end gains to be had with a slight increase in lag.

    RIch
    #64
  25. Ryanc
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    Ryanc Active Member

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    [Apr 2, 2005]
    The hot side is the exhaust housing the p18/p20 is the comprssor housing ,although truthfully this is not really muh of a restriction on a vf34 probably good for 10-15bhp top end.
    #65
  26. Ryanc
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    Ryanc Active Member

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    [Apr 3, 2005]
    You may be able to fit a larger compressor wheel aswell but this would increase lag.Like i said before the exhaust housing is the real restriction on the vf34.
    #66
  27. s3bow
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    s3bow Member

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    [Apr 3, 2005]
    Only way of getting round that one is to go to a VF22 ?

    Chris.
    #67
  28. Ryanc
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    Ryanc Active Member

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    [Apr 3, 2005]
    From what i've heard it's not worth going to a vf22.There are some good td05/06 hybrids that will fit the jabba manifold but have no idea if they will have any fitment issues.
    #68
  29. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Apr 4, 2005]
    You get the housing from jabba... Best to do it before its fitted the first time round... I wasnt aware of it when i fitted mine as i would have done it then.

    The VF-22 will allow you to pass 400bhp (just about) although its not guaranteed. an 8k rev limit is best for this setup to take full advantage of the turbo... Engine must be well uprated though... from top to bottom!

    Rich
    #69
  30. Ryanc
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    Ryanc Active Member

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    [Apr 4, 2005]
    I don't think a vf22 will make 400hp,maybe a hybrid vf22 or even a hybrid vf34 with larger compressor wheel and housing plus a bit of porting.Plus the vf22 has a old bearing design and is pretty fragile.
    #70
  31. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Apr 4, 2005]
    [ QUOTE ]
    I don't think a vf22 will make 400hp,maybe a hybrid vf22 or even a hybrid vf34 with larger compressor wheel and housing plus a bit of porting.Plus the vf22 has a old bearing design and is pretty fragile.

    [/ QUOTE ]

    here i go again in a semi asleep state. I should jsut not post anything til about 11am when im with it. /ubbthreads/images/graemlins/snore.gif

    The VF-22 that Jabba used on their old golf wasnt standard...Not sure exactly what was done to it. The VF-22 is a older unit than the VF-34 so as you say, isnt as reliable as the VF-34.
    #71
  32. s3bow
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    s3bow Member

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    [Apr 4, 2005]
    I am looking for around 350 hp from the VF34. Am I asking too much ?

    Chris.
    #72
  33. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Apr 4, 2005]
    [ QUOTE ]
    I am looking for around 350 hp from the VF34. Am I asking too much ?

    Chris.

    [/ QUOTE ]

    No, but your nearing the limit of its capabilities.
    #73
  34. Ryanc
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    Ryanc Active Member

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    [Apr 4, 2005]
    350hp is top end on a vf34 ,you might want to go for the p20 housing to make sure.There are bigger and better stuff available but your going to get more lag towards 400bhp.You could always try and stroke the 1.8 to gain extra torque and reduce spool up but it's a expensive route.
    #74
  35. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Apr 7, 2005]
    [ QUOTE ]
    What's a VF34??

    [/ QUOTE ]

    its a roller bearing turbo used originally on the later model STi Scooby's (i believe). Good turbo!
    #75
  36. Ryanc
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    Ryanc Active Member

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    [Apr 7, 2005]
    It's a turbocharger made by a company called ihi who made alot of the turbos used on the f1 cars back in the eighties.The vf34 is the standard turbo that comes on a subaru impreza sti 7 ra and is of roller bearing design,which means that it can spool up faster than standard bearing equipped turbos.It seems well suited to the vag 1.8t and is the basis of the jabbasport upgrade package which can be bought in kit form.
    #76
  37. Ryanc
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    Ryanc Active Member

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    [Apr 7, 2005]
    sorry mate but the vf22 is fragile ask any scooby owner.It is ball bearing but of a older design to the vf34.VF22 is a lower-tech compressor compared to the VF34... 5 blade and only 5, where the VF34 is 6 and 2 sets of them.It may be possible to just squeeze 400hp out of one on a 2.0l scooby engine but on a 1.8?I don't think anyone has said a vf34 with p20 housing will produce 400bhp,i said a vf34 with larger compressor wheel housing on porting might just make 400bhp.
    #77
  38. Defratos
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    Defratos You’re Dethpicable!!

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    [Apr 7, 2005]
    all this talk about VF22s and VF43s is trippy, thanks for the brief explanation. (lookin forward for the next come back) lol /ubbthreads/images/graemlins/froggie_red.gif
    #78
  39. Defratos
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    Defratos You’re Dethpicable!!

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    [Apr 7, 2005]
    Ohh Ohh look what I found on ebay, a VF22 is this what u guys have been goin on about?

    [​IMG]
    #79
  40. Silversea225
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    Silversea225 New Member

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    [Apr 7, 2005]
    [ QUOTE ]
    sorry mate but the vf22 is fragile ask any scooby owner.It is ball bearing but of a older design to the vf34.VF22 is a lower-tech compressor compared to the VF34... 5 blade and only 5, where the VF34 is 6 and 2 sets of them.It may be possible to just squeeze 400hp out of one on a 2.0l scooby engine but on a 1.8?I don't think anyone has said a vf34 with p20 housing will produce 400bhp,i said a vf34 with larger compressor wheel housing on porting might just make 400bhp.

    [/ QUOTE ]

    There is no question that the VF34 uses newer technology with improved bearing design and improved compressor design as you stated.

    I have not heard of any issues specific to the VF22 other than the fact that it is 2 / 300 rpm laggier than the 34 (even on the Subaru forums /ubbthreads/images/graemlins/fuck_you.gif)

    Loads of information and comparisons between the VF22 and the VF34.

    http://www.rallispec.com/sub_engineturbo.htm
    /ubbthreads/images/graemlins/ok.gif
    #80

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