DIY Supercharger 4G63...(warning lots of photos..)

Posted by JayRome, Nov 23, 2010
Newbie Forum - Beginner DSM modification questions and discussions. Common, repetitive, and general discussions will get dumped here from other tech forums. Unless you're a Probationary member you shouldn't post threads here.

  1. JayRome

    JayRome Proven Member

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    a few people have requested pictures and or plans regarding my old Supercharger set up on my 4g.. (mods if this thread needs to be moved to correct section please do so..)

    this may clear some things up, i have lost alot of detailed photos due to a HD getting currpted but i can answer anyones question in regards to the set up...

    the supercharger used was an Eaton M45 from a Mercedes C200 Kompressor

    any questions just ask... i would suggest building everything on a spare engine, it makes things alot easier..

    warning: i wont be held responsible if you blow your s*#t up :p



    extractors/headers to cope with the boost: (i just recycled my old tri-y's and turned them tuned length)

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    manifold design:
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    #1
    carmiencke likes this.
  2. JayRome

    JayRome Proven Member

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    [​IMG]
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    (i wouldnt try and weld alloy with a mig, it sucks balls, but it works... kinda...)
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    (Using the stock aircon belt tensioner for the supercharger belt)
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    #2
  3. rayrayx11

    rayrayx11 Proven Member

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    riverside, Rhode_Island
    interesting... never seen it done like this.
    #3
  4. JayRome

    JayRome Proven Member

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    installation:
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    i stitch overlap weld to ensure each weld has no leaks...

    with stock pully it was happy full boosting 8psi and around 3psi from idle

    any questions feel free to ask...

    YouTube - Supercharged Galant GSR (better camera)

    YouTube - Supercharged 4G63 Dyno'd



    Jerome :dsm:
    #4
  5. AlphaVision

    AlphaVision Proven Member

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    What's that charger?

    A friend of mine is doing something similar with an Eaton M62. Can you tell was it good? Pros and cons?

    Thanks!
    #5
  6. pj91gsx

    pj91gsx Freelancer

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    where did you get the super charger from?
    #6
  7. JayRome

    JayRome Proven Member

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    Pro would be no lag at all, matched with the right cams it feels and pulls like a bigger engine as well as having a wider power band.. also scaring the s*#t out of big block owners when they hear the whine under a mitsu bonnet...

    Con would be that sometimes Superchargers are more expensive then a turbo in regards to its parts and replacements, and tuning.. some tuners freak when they see a supercharged on a worked 4cyl....

    other wise same as turbo... but without the kick in the back of the head..

    LOL eBay US.....
    #7
  8. AlphaVision

    AlphaVision Proven Member

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    Sofia, Europe
    Thanks for the info. I have more questions :)

    How about hp loss to spin the charger? What is the brand/model of the supercharger? What cams did you use? Any dyno numbers?
    #8
  9. JayRome

    JayRome Proven Member

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    loose around 5-10%ish power to spin the charger (depending on the charger design wise, can be more or less), more torque, the instant boost makes up alot of the lost power.. add a sandwich plate cooler between the supercharger and the manifold and you can make alot more of that lost power back.....

    its in the first post... Eaton M45 from a Merc C200/180 Kompressor

    and no i didnt get enough time to dyno and tune properly before the supercharger died racing someone in the mountains..... (it was a 2nd hand unit couldnt expect much)
    Last edited by a moderator: Jul 10, 2014
    #9
  10. AlphaVision

    AlphaVision Proven Member

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    All right. Thank you for the info. I appreciate it. One last thing. What boost and charger RPM@engine RPM was the charger running?
    #10
  11. JayRome

    JayRome Proven Member

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    that i dont remember, the pully was 1/3rd smaller then the stock VR4 4G63 pully...

    from memory it was around 3psi ish from idle 1krpm and 8psi constant after 2.2krpm that...
    #11
  12. skatershawn

    skatershawn Proven Member

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    plan on getting a new supercharger??

    What are you plans for it now?
    Keep us updated!
    #12
  13. JayRome

    JayRome Proven Member

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    yes i have been looking for a replacement supercharger, but at the moment can not seem to find one...

    currently running an EVO8 turbo which replaces the supercharger, i do miss the S/C whine though, it did turn alot of heads...
    #13
  14. 9!'clipseDOHC

    9!'clipseDOHC Moderator

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    Very interesting! Good job on building it! That takes a lot of desire and ingenuity, especially since its so easy just to slap a turbo on.
    #14
  15. laser90

    laser90 Proven Member

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    I'm speechless...... This is a ####ing cool ass build! Props to you man.
    #15
  16. Imback

    Imback Proven Member

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    Very cool first time i've seen that. This should be moved to custom fabrication. How much power are you making at 8psi?
    #16
  17. JayRome

    JayRome Proven Member

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    i'd say it was making an easy 150kw at the front wheels before the S/C died..

    when it did hit the dyno i got 57kw at 38% before my fuel system said no more (n/a ECU and injectors).... slapped on the VR4 ecu and injectors and she was back to more power but pinged slightly due to the maps being off....

    cheers for the comments guys....

    i would love more people to give the Supercharged way a go, they sound awesome and can still keep up with the turbos and you dont normally hear a supercharger whine on a ### car...
    Last edited by a moderator: Jul 10, 2014
    #17
  18. coty

    coty Probationary Member

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    lonaconing md, Maryland
    wow
    this is nuts
    #18
  19. SD99GST

    SD99GST Proven Member

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    Would not believe it if I didn't see it. Insane build.
    #19
  20. spooln4fun

    spooln4fun Proven Member

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    It is a very interesting build and perhaps we(well 1g owners) could use the exhaust from a non turbo 4g that would eliminate the exhaust fab. As far as the intake that is another story.

    How was it getting the belt for the s/c as well as making those belt tensioner mounts?
    #20
  21. Zdrummer15

    Zdrummer15 Proven Member

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    My thoughts exactly. I definitely won't be going this route, but it's still cool to see that someone gave it a try. A guy I lived with at college last year is doing a supercharger set-up on his Subaru 2.5RS though. I don't remember for sure, but that may even be the same supercharger he has. Either way it's a pretty cool build. If you ever swap back to a SC make a comparison to the turbo you're currently running. I'm sure a comparable turbo will put up much better numbers, but it would still be interesting to see the difference.
    #21
  22. BIRDCLAWTSi

    BIRDCLAWTSi Supporting Member

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    I was stoked when i saw your car in the widebody thread you posted, I never saw one in the u.s., Then i realized that you were in australia, Bummer.

    Either way, Cool car and props to you for thinking out of the DSM Box. It gave me a new approach to things. Much like Paul Volk (99Gstracer) did with his compound set up. I love seeing custom work. Later.
    -Dave
    #22
  23. me4g63t

    me4g63t Probationary Member

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    This is one sick dsm bro.
    #23
  24. motozachl

    motozachl Proven Member

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    This is very interesting to say the least
    #24
  25. JayRome

    JayRome Proven Member

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    yer some of the non turbo 4g64 stock manifold are already tri-y design so its easy if you know what your doing..

    as for the belt, its actually not hard, just used string to see how long it had to be, then went to my local parts shop and requested a belt this big with 4 ribs in it... you really have to play around with the pully's to get it exat but if your mechanicaly minded it should be easy....

    its a fun project if anyone attempts it..
    #25

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