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  1. #1
    Junior Member
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    Just a few questions about Turbos

    I'm buying a turbo lude with a stock motor. the guy has been running 9psi - 209 kw at the wheels. I know these are high numbers but it was on a Mainline dyno. He said the previous owner had it pushing 12psi

    my question is when the motor blows up, who should i go to to get it built (sydney)? ive done some searching and the consensus seems to be Toda. i have an engine builder who does my race superkart engines and he does some cars too but ill have to call him to confirm if he could do an H22.
    Also which pistons should i use, i would want to drop compression slightly and up boost. after a bit of research ive seen that Mahle makes a set which wouldn't require me to sleeve the block but i can't find anyone who has used them before. most people say eagle rods and ACL bearings im not too fussed just want good value.

    IF i was to lower boost would i have to chnge the wastegate spring? from memory i don't think you can lower boost with a controller.
    Last edited by Timsfivegen; 9th December 2011 at 10:34 AM.

  2. #2
    Silver Member PJF_Lude's Avatar
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    mahle make the only pistons that can be used in a h22 without sleeving. AdReNaLiN on here is using them in his build, his thread i only a couple below this one.
    And, yes, the minimum boost is determined by the wastegate spring, a boost controller can only go higher, not lower.
    ~Ian~

    Anything thing I say is my opinion, all care, but no responsibility taken.

    1989 Prelude Si Turbo - Laguna gold - Progress thread index or My Garage
    Prelude Australia POTM - June 2009 ..... Prelude Power POTM - July 2010
    2006 CBR1000RR - Silver Metallic - Clicky

  3. #3
    Junior Member
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    where could i get a 7 pound wastegate spring for a Garrett T3/T04 turbo? anyone got a clue on how to install these?

    i picked up the car today and it spins 1st and 2nd and a bit at the top of 3rd. granted the tires are almost at the wear indicators but i still want to lower boost; i'm a bit worried about the motor and if i change my mind i can always throw in a boost controller.

  4. #4
    Gold Member phattzy's Avatar
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    The wastegate spring is for the wastegate not the turbo . does it have an external WG or a internal ? the springs are different . have a look on eBay might be a selection of WG springs there . changing the spring isn't that hard just a case of opening the top of the actuator removing the old spring and installing the new one . do alittle more research and ask some more questions , sounds like your not really cluey on the whole turbo thing dude .


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    Quote Originally Posted by SAKI View Post
    PS: Can't wait to see your beast in action.. going to be one the highest power 3rd gens out there i reckon..
    Quote Originally Posted by Pacman View Post
    I am going down now to show them mine....

  5. #5
    Gold Member phattzy's Avatar
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    GARAGE : http://www.preludeaustralia.com/foru..._vehicle&id=30

    BUILD THREAD : http://www.preludeaustralia.com/foru...o-3rd-gen-lude

    VIDEOS

    http://www.youtube.com/watch?v=usazsV_c_zU
    http://www.youtube.com/watch?v=psgNZjLqRrw
    http://www.youtube.com/watch?v=BRn-1Oeashw

    Quote Originally Posted by SAKI View Post
    PS: Can't wait to see your beast in action.. going to be one the highest power 3rd gens out there i reckon..
    Quote Originally Posted by Pacman View Post
    I am going down now to show them mine....

  6. #6
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    nar i'm not as of yet. kind of jumped in the deep end here. im pretty sure its internally gated. thanks for the links ill do a bit more research.

    i should probably ask the owner he knows everything about this car

  7. #7
    PA Resident SAKI's Avatar
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    Is this snaill? Blue 5th gen?
    Quote Originally Posted by brash22 View Post
    You sir are mad. Like lock you in the nuthouse mad.
    Quote Originally Posted by Manabir View Post
    You sir are a prelude obsessed freak.
    Quote Originally Posted by hiru View Post
    you sir, are a prelunatic.

  8. #8
    Silver Member PJF_Lude's Avatar
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    if it's internally gated you will need to replace the whole wastegate actuator, hit up your local garrett dealer and tell them what turbo you have and ask for a 7psi actuator.
    ~Ian~

    Anything thing I say is my opinion, all care, but no responsibility taken.

    1989 Prelude Si Turbo - Laguna gold - Progress thread index or My Garage
    Prelude Australia POTM - June 2009 ..... Prelude Power POTM - July 2010
    2006 CBR1000RR - Silver Metallic - Clicky

  9. #9
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    yes this is snail; well it was snail its got regular plates and i removed the sticker just because of where i park it at night the last thing i would want it the wrong kind of attention

    I had a better look today and its externally gated 38mm Tial brand. I can change the spring no problem. I'm going to get a .25 bar spring and run a boost controller around 6-7 psi. i figured that if i don't have the grip then why have the power and with a BC i can always go up if i decide to buy some semi's or rent some slicks for the 1/4 which tbh im not particularly interested in other than to know what it CAN do

    my old man saw me cleaning up the airbox and oiling up a new filter he almost hit the roof when he saw the 'hairdryer' as he called it

    only way ill keep him happy is if i de-tune it first and show him then i can do whatever. If i could get a dyno sheet showing something under 140-150 kw i think he would buy it.

    ignore what i said in the OP as that was before i bought it and after 1.5 tanks of fuel i know the car a bit better

    the reason my dad flipped out is because his friend was killed in his mid 20's in something modified and since then he's gone the 'speed off the streets' attitude which i completely agree with. weve done a lot of karting at wakefield park and eastern creek over the past 18 months and he even went down to phillip island for a race. just a bit of background for you haha

    where should i go for the wastegate spring and does anyone know ofa good value BC with say a preset function? im after a mechanical or manual BC or whatever you call it as the auto ones are super expensive from memory

  10. #10
    Gold Member phattzy's Avatar
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    a EBC (electronic boost controller) is prob the best setup as it allows you to change your boost whilst inside the car and while driving , im running a turbosmart eboost2 EBC and its fanstastic but at $1000 a unit very expensive . a manual boost tee which is inline from your compressor to your waste gate is the most popular and cheapest setup they go for around $50-$100 but to change boost you must stop , pop bonnet and screw up or screw down the valve to reach your desired boost level . the turbosmart eboost street is a smaller version of the eboost2 but way cheaper , have a look at them , alternatively run a boost solienod of your ecu . you should be able to get a waste gate spring from those links i posted http://www.ebay.com.au/sch/i.html?_n....c0.m270.l1313 , if not i have a 7psi 38mm ultragate spring i could sell you cheap


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    Quote Originally Posted by SAKI View Post
    PS: Can't wait to see your beast in action.. going to be one the highest power 3rd gens out there i reckon..
    Quote Originally Posted by Pacman View Post
    I am going down now to show them mine....

  11. #11
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    ok, i ordered a .25 bar spring a couple days ago. ill get that in before i buy a BC

    http://www.ebay.com.au/itm/Turbotech...item335e98a59b
    This is something i'd be after. Does anyone know of a good brand for a cheap BC? thanks

    @Phattzy and EBC would be awesome but not really in my price range! i should be fine with what ive got coming but thanks anyway

    another thing. Is there a certain technique to getting the spring in and out? i used cable ties to hold the wastegate spring housing on while i unscrewed the bolts then had to stand back and cut the tie lol. When i put the spring back in i pushed it on and tightened it with cable ties before being able to get the bolts in. was not easy! im hoping the 3.6 pound spring will be softer hahah
    Last edited by Timsfivegen; 30th November 2011 at 11:06 AM.

  12. #12
    Silver Member PJF_Lude's Avatar
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    the turbotech is exactly what i was using before i got the EBC. Worked really well with a internal wastegate. I think you'd have to hookup your external gate as a single port for it to work, but then you run the risk of getting a little boost creep with such a light spring.
    ~Ian~

    Anything thing I say is my opinion, all care, but no responsibility taken.

    1989 Prelude Si Turbo - Laguna gold - Progress thread index or My Garage
    Prelude Australia POTM - June 2009 ..... Prelude Power POTM - July 2010
    2006 CBR1000RR - Silver Metallic - Clicky

  13. #13
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    It is running as a single port; the port on the outside goes nowhere. what does this mean and what is boost creep? thanks
    ive got a 9pound spring in at the moment.

    have you still got your turbotech floating around Ian?

  14. #14
    Silver Member PJF_Lude's Avatar
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    sorry, i mean wastegate creep
    wastegate creep is when the wastegate spring can't hold the pressure in the exhaust manifold and it is pushed open slightly, basically means the boost pressure will increase slower.
    The closer you get spring pressure to actual desired target pressure, the less likely you are to have creep.

    With a 2 port external wastegate, you can feed boost pressure into the top port to help keep the gate shut, but it won't work with a turbotech style controller, it only works with a bleed style controller, which then needs a check valve to not cause idle issues.

    I still have the turbotech, it's sitting on my desk at home.
    ~Ian~

    Anything thing I say is my opinion, all care, but no responsibility taken.

    1989 Prelude Si Turbo - Laguna gold - Progress thread index or My Garage
    Prelude Australia POTM - June 2009 ..... Prelude Power POTM - July 2010
    2006 CBR1000RR - Silver Metallic - Clicky

  15. #15
    Junior Member
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    ah okay yeah i didnt think of that. If it's that bad i might have to buy that spring from phattzy.

    do you think running a 3.6 pound spring and an MBC pushing max 7psi is too much of a gap or should i go for a 7 pound spring after i get my father on board? I guess a 7 pound spring and no BC would always perform better

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