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  1. #1
    Member Array
    Join Date
    Jul 2010
    Location
    Bri
    Car:
    prelude

    H22 Turbo setup.

    I just thought i'd throw my setup in here, maybe get a few opinions as to what I should do, things I have done right, things i've done wrong, things I should do, shouldn't do, etc.

    And if this part of the forum is like the rest, (kinda hopes it isn't) probably get a good flameing along the way.

    Anyhow, Some of you may have seen my car, either here, or at a meet.

    It's a 94 VtiR Prelude. H22a of corse. And most people think it's far too rice.

    But you can make up your own mind.



    Now this is what i'm doing....

    I have 2 other projects I need to work on. So I just want to get this girl running and relyable on stock internals for the mean time. in the long run, I will be doing the internal work, but that will be after i've made some good progress on other projects. (A 92 JDM Si Vtec prelude and a 89 JDM EF6 CR-X)

    Anyhow, Back on topic. the turbo set up goes something like this.....

    H22a with stock internals.
    This motor has already got 249 XXX km on it, but has always been well
    maintained. Last major service was at 235 XXX when it recieved the usual
    water pump and seals etc, as well as a Greddy timing and balance shaft belts.
    Also, I threw on a set of Skunk2 adjustable cam pullys, and in perperation
    for this build, a Koyo 56mm aliuminium radiator.

    On a side note, I also recently threw in a stage 4 6 puck copper ceramic
    cushion button clutch and matching ductile iron pressure plate.
    And a single peice chrome molly 11.5lb fly wheel.

    Custom stainless manifold.
    I had this built by Richard, at Autosport Engeneering. (Yatala QLD)
    I had looked for someone to do the fabrication work for a long time,
    and he came highly recomended to me by Matt Stone. (the V8 Super car driver)
    Richard had spent the last decade working for Dick Jonson Racing, but beforthat
    worked for Ferrari, building their race chassis for Le Mann, and also built turbo
    manifolds for Big CC, who specialised in turbo charging Hayabusas.

    I wasn't origonally happy with a few of his ideas, but I let him have his head
    and i'll save my judgment for when I see the first graphs.

    The work included, a custom manifold, stainless with backpurged welds,
    port matched runners with no tight bends. (his idea) a 3 inch dump pipe
    with seperate chamber for the waste gate. keeping waste gasses away
    from the exducer. 2.5 inch hot pipe, and 3 inch cold pipe. also a 2.5 inch intake.

    T25/28 turbo.
    The exact specs on the turbo are as follows.
    Dual ball bearings,
    Inducer/Exducer 54/71
    Compressor, Trim 56, A/R 0.60
    Turbine, Trim 76, A/R 0.86
    I don't know that much about turbos, (which is why I started this thread)
    So opinions on this will be appriciated. (I am open to changing the turbo later,
    but it will need to stay in the T28 family to make swapping easier i believe)

    Liquid to air intercooler.
    I had decided I wanted to go with a Liquid to air intercooler set up
    right from the word go. (just to be different)
    Intercooler specs as follows.
    2.5 inch I/O, core size 3.5x3.5x9.5 inch. (this seems very small, but i'm
    assured that it's plenty big enough for this aplication.
    450 cfm, Max pressure 70 PSI.
    Bosch electric water pump, 16x12x1 inch PWR heat exchange with electric fan.

    Turbosmart 34mm dual port BOV.
    Buying the Kompact style, and for the most part, will be running it as a
    plumb back.

    RC 650cc Injectors. Self explainitory.

    Walbro 255 lph fuel pump. Also self expainitory.

    Hondata S300 ECU.
    Using the Hondata to control boost, fitted and tuned by 101 Motorsport.

    Here are some pics,

    Motor just before I start fabrication.


    Custom manifold.
    The head flange and the merge collector.


    And the finished manifold.


    And the entire setup, manifold, dump, hot, cold and intake pipes.


    At this stage, The plan is to finish plumbing oil and water to the turbo, water for the intercooler, BOV, ECU and tune. then i'm back on the road.

    I am wanting advice, anything I have missed. things I have done which I shouldn't have?
    Things I should do, but haven't mentioned.....??
    Last edited by ThePacman; 31-12-2011 at 09:38 AM.
    When words fail, Vtec speaks....!

  2. #2
    Member Array
    Join Date
    Jun 2005
    Location
    Brisbane Queensland
    Car:
    1985 ford laser
    Is this you steve? Lyle here mate ! Nice to finally see some photos of this that you have told me so much about! Very impressed with the exhaust manifold & water to air intercooler setup you have... like how you can still keep that massive full size radiator too.

    Just be carefull with how much heat your dump and exhaust manifold produce (you would be surprised !). Look into some heat lagging / fibreglass wrapping and/or a turbo bag. Doesnt seem like you have much clearance between your radiator top hose and your exhaust manifold, it would be a shame to see it fail from high temps. See how it goes, but if the heat lagging is not enough on your manifold then try changed you top hose to a SS braided line or even solid.

    Keep up the good work mate, speak soon.... im sure i am going to need a tow in the next few weeks
    Light up with Lyle - Electrical / Communications / Instrumentation

  3. #3
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    Join Date
    Apr 2008
    Location
    Melbourne
    Car:
    '90 EF8/'94 EH9
    Love it man. Mani looks fab. How's the CRX?

  4. #4
    Member Array
    Join Date
    Jul 2010
    Location
    Bri
    Car:
    prelude
    Quote Originally Posted by Sexc86 View Post
    Is this you steve? Lyle here mate ! Nice to finally see some photos of this that you have told me so much about! Very impressed with the exhaust manifold & water to air intercooler setup you have... like how you can still keep that massive full size radiator too.

    Just be carefull with how much heat your dump and exhaust manifold produce (you would be surprised !). Look into some heat lagging / fibreglass wrapping and/or a turbo bag. Doesnt seem like you have much clearance between your radiator top hose and your exhaust manifold, it would be a shame to see it fail from high temps. See how it goes, but if the heat lagging is not enough on your manifold then try changed you top hose to a SS braided line or even solid.

    Keep up the good work mate, speak soon.... im sure i am going to need a tow in the next few weeks
    Hey Guy,
    Nar, won't be surprised... LOL i'm expecting it.
    Everything (manifold, dump, hot and cold pipes) is getting ceramic coated. (Competition coatings at Archerfield) and i'm also lagging the dump pipe, and throwing a beanie on the turbine housing.
    I had little clearance on my top hose. But I went down for a dig through the rad hose section at supercheap, and came up with a better hose. it's about an inch at the thermostat housing, but a good couple of inches everywhere else. I'm still planning to make a little heat sheild though.

    Pic showing new clearances. There's actually more clearance than it looks in the pic.


    Lookin foward to seeing your car on the road again. waiting on your call....

    (For those who don't know, I drive a tow truck for a living. A truck specially designed for towing high performance cars... (but it can still tow a Nissan...!! LOL))
    Last edited by ThePacman; 31-12-2011 at 02:04 PM.
    When words fail, Vtec speaks....!

  5. #5
    Member Array
    Join Date
    Jul 2010
    Location
    Bri
    Car:
    prelude
    Quote Originally Posted by dougie_504 View Post
    Love it man. Mani looks fab. How's the CRX?
    The CR-X is the wifes daily. she crashed it soon after getting it, and I almost decided to scrap it.
    But there were no other JDM CR-Xs for sale at the time, so I decided to poor the money in and repair it.

    it looks like a Panda at the moment, as it's white from the A pillar foward. and it has an AUDM front end now. but it's running and a blast to drive. (Considering putting a H22 (JDM) in it, if I end up with a spare. Which is if I decide to drop a K24 into the JDM Si Vtec Prelude)

    Keep an eye out, you'll see it....
    When words fail, Vtec speaks....!

  6. #6
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    Jul 2010
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    Bri
    Car:
    prelude
    Here is a link to the build thread, if anyone has a couple of hours to kill reading.... LOL
    http://www.ozhonda.com/forum/showthr...s-VTiR-4th-gen.
    When words fail, Vtec speaks....!

  7. #7
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    Join Date
    Jul 2010
    Location
    Bri
    Car:
    prelude
    Only a matter of hours from turning the key on this girl....
    (as in, a few hours of work to be done. Not litterally in a few hours from now...

    Water cooling lines to the turbo are fitted, I have fitted the ECU with a safe basemap.
    I have the injectors, just need 'O' rings, and I can fit them,
    Bought a TurboSmart dual port BOV yesterday.

    Biggest job remaining is to fit the oil feed line, and swap the sump to the one with the oil return.
    (I have the new sump with return and a new gasket...)

    So, If I had a few odds and ends, and 3-4 hours to spare, i'd be able to turn the key....

    I still have to fit radiator fans, lag the exhaust, and set up the pipes for the intercoolers heat exchange.

    But it's getting closer to being 'on the road again'.
    When words fail, Vtec speaks....!

  8. #8
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    Jul 2010
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    Car:
    prelude
    Ok. News on this build is....

    I've (for the want of a better word) dissmissed my previous fabricator. (in disgrace)

    Seems he assumed he knew the firing order, thought to himself, 'i'l have to choose between equal length runners, or concentric firing order'.

    Alas, if he'd bothered to use google search, and found out the correct firing order, he'd have realised, with the corect firing order, it would have made it possible to keep equal length runners.

    Also, he couldn't be bothered to try and put the BOV port in anything resembling a decent position.

    Anyhow, after spending some time with Simon, from Exotic exhausts in Sumner (Brisbane) all my problems have been solved, with a minimum of fuss, and leaving me with a surprising amount in my pocket.

    New look manifold.....


    I'll post pics of the entire setup, once I install it properly.....
    When words fail, Vtec speaks....!

  9. #9
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    Jul 2010
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    Car:
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    Ok, refabsication complete. Ceramic coated the manifold, and re assembled....

    Here's the new look....


    When words fail, Vtec speaks....!

  10. #10
    Member Array
    Join Date
    Dec 2008
    Location
    835 Beaufort St
    Car:
    hondie 2000
    jaw dropped...

    that looks insane!
    S P A M | W O R K S
    hehe.
    PHC


  11. #11
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    Jul 2010
    Location
    Bri
    Car:
    prelude
    Had to be a Prelude driver to comment. LOL
    It seems to me, most OzHonda members consider the Prelude to be invalid... LOL
    When words fail, Vtec speaks....!

  12. #12
    Member Array
    Join Date
    Dec 2008
    Location
    835 Beaufort St
    Car:
    hondie 2000
    ahh well what can we do. nobody likes h22 turbos
    S P A M | W O R K S
    hehe.
    PHC


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