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GVR-4 4G63 SOHC want more power

Posted by relindwto6, Jul 18, 2020

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  1. relindwto6

    relindwto6 Probationary Member

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    Joined Jul 17, 2020
    usa, New York
    Hello guys!

    I have a 4G63 powered 8th gen Galant, with 136hp, totally original. I love that car, love revving this engine over 6000rpm, but I would like to have more power(at least 40-60hp more). What can I do?

    Sohc to dohc conversion, can give me more power? Can I put an aftermarket turbo, and everything else on it? Will the ecu and the other elements (pistons,etc) can handle the more power? The engine will be as reliable as the original 4G63? Or is it easier to put in a 4G63T? If yes it's a plug N play stuff?(except the wiring) Thanks for your answers.
    speed test
     
    Last edited: Jul 19, 2020
  2. pauleyman

    pauleyman DSM Wiseman

    5,760
    1,253
    Joined Nov 19, 2011
    oklahoma city, Oklahoma
    If that's a US spec car it's not a 4g63. It's a 4g64. It's layout is on the passenger side and does not share the layout of the dsm platform. Thre have been people that have turboed them etc.
    There is similar engineering between all sirius model motors 4g63, 4g64 etc but modification is model specific. You may want to check out some galant forums such as this.
    https://www.thegalantcenter.org/forum.php
     

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  3. CrackedDSM

    CrackedDSM Proven Member

    1,589
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    Joined Dec 17, 2009
    Roanoke, Virginia
    If it's the 4G64, you can Evo swap it fairly straightforwardly. IIRC you only need to add a few wires inside to use the Evo ECU as well, so read read read.

    I'd save up my money and time, and read like crazy, and toss in a basic Evo longblock, Evo ECU, and enjoy it until the transmission explodes and then debate something else. :p
     

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  4. ThunderChild

    ThunderChild Supporting VIP

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    Joined Jan 5, 2012
    Rathdrum, Idaho
    Kia head, Evo ECU ( I don't recall the pins that you need to add ) and an Evo 8/9 turbo setup would make it a cheap swap and pretty darn fun.
     

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