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  1. #21
    Experienced TGC Member mysticj's Avatar
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    Have you thought of using the Hyundai G4JS pistons?
    94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU

    1994 GS FYI
    DSM/CSM Manuals

  2. #22
    You are here entirely tooo much!! Galanttuner10's Avatar
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    all of those part numbers are gone? i have oversized piston part numbers and 2 more std size part numbers for each piston
    2014 Lancer Evo GSR
    1996 Galant S 5 Speed Turbo
    Need a Turbo rebuilt or upgraded--> http://www.thegalantcenter.org/showt...ebuild-Service

  3. #23
    Quote Originally Posted by mysticj View Post
    Have you thought of using the Hyundai G4JS pistons?
    I did that once before as an experiement, but the CR was so high I couldnt run anything that didnt detonate like crazy. AND, the wristpins are a different size, 1mm different. I did realize then tho, that the valve reliefs dont have to match unless youre planning on redlining it. Did you ever try them?
    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  4. #24
    Quote Originally Posted by Galanttuner10 View Post
    all of those part numbers are gone? i have oversized piston part numbers and 2 more std size part numbers for each piston
    I contacted two seperate dealers, but it was only the GS piston that is gone, the standard ones are readily available.
    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  5. #25
    You are here entirely tooo much!! Galanttuner10's Avatar
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    Quote Originally Posted by Joel91GS View Post
    I contacted two seperate dealers, but it was only the GS piston that is gone, the standard ones are readily available.
    now they said they are just discontinued? out of production? they didnt say a new piston took their place? weird.
    2014 Lancer Evo GSR
    1996 Galant S 5 Speed Turbo
    Need a Turbo rebuilt or upgraded--> http://www.thegalantcenter.org/showt...ebuild-Service

  6. #26
    You are here entirely tooo much!! Galanttuner10's Avatar
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    i entered the GS piston part number at oemmitsubishiparts.com and they came up, maybe see if they can get them. i will talk to my dealer today
    2014 Lancer Evo GSR
    1996 Galant S 5 Speed Turbo
    Need a Turbo rebuilt or upgraded--> http://www.thegalantcenter.org/showt...ebuild-Service

  7. #27
    Experienced TGC Member mysticj's Avatar
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    Quote Originally Posted by Joel91GS View Post
    I did that once before as an experiement, but the CR was so high I couldnt run anything that didnt detonate like crazy. AND, the wristpins are a different size, 1mm different. I did realize then tho, that the valve reliefs dont have to match unless youre planning on redlining it. Did you ever try them?
    Switching to a 1G rod should have done the trick.

    I was planning to in the future but I guess using a milled 4G67 head to raise compression should do the trick.
    Last edited by mysticj; 08-26-2010 at 04:24 PM
    94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU

    1994 GS FYI
    DSM/CSM Manuals

  8. #28
    Quote Originally Posted by Galanttuner10 View Post
    i entered the GS piston part number at oemmitsubishiparts.com and they came up, maybe see if they can get them. i will talk to my dealer today
    Oh yeah, they come up, but when I attempted to order they emailed me and said not available in any warehouse anywhere. But sure, throw the part number at your dealer and maybe youll get a different story. Hey how many of these GSs did they make in 94?
    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  9. #29
    Quote Originally Posted by mysticj View Post
    Switching to a 1G rod should have done the trick.

    I was planning to in the future but I guess using a milled 4G67 head to raise compression should do the trick.
    I think the 1G rod journals are wider and you would have to have them reduced but maybe only by a mm or 2. They take a wider bearing as well. Do you know anyone that retrofitted a 1g rod into a 2g setup?
    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  10. #30
    Experienced TGC Member mysticj's Avatar
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    Hey how many of these GSs did they make in 94?
    About 1660 of them.

    I think the 1G rod journals are wider and you would have to have them reduced but maybe only by a mm or 2. They take a wider bearing as well. Do you know anyone that retrofitted a 1g rod into a 2g setup?
    How about using the G4JS rods with the G4JS pistons?

    The reason why you had so much knock with the high compression is because of the use of stock cams and 4G63 ecu. The ignition maps are too high and the stock cams increase the dynamic compression. There is only so much room allow to increase static compression and still run pump gas. The reason to increase static compression is not only to increase horsepower but to regain lost dynamic compression when using a bigger cam.
    94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU

    1994 GS FYI
    DSM/CSM Manuals

  11. #31
    You are here entirely tooo much!! Galanttuner10's Avatar
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    everything from the GS is completely obsolete and unavailable. the only parts still available are the rods. honestly go aftermarket or even go 96-98 64. and for rids, do the frankenstein setup. 1g rod bored out for the 22mm pin
    2014 Lancer Evo GSR
    1996 Galant S 5 Speed Turbo
    Need a Turbo rebuilt or upgraded--> http://www.thegalantcenter.org/showt...ebuild-Service

  12. #32
    The 10.5:1s are readily availablefrom wiseco and I wouldnt have to change anything at all, cept them of course! I have the 2.4 cams and head / intake already, 32k on the head that I have!

    Wish you guys lived closer, would be cool to check out your car. There is a local guy that just got a 91 VR4, and has been calling me for help with it, the manual trans in it is shot, and I dont think he will ever find a new one, or someone that could fix it. And the the timing cover swelled and is rubbing on the belts.
    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  13. #33
    You are here entirely tooo much!! Galanttuner10's Avatar
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    the gs cylinder head assembly part number has been obsoleted too and is now the 2g head assembly as well just so you guys know
    2014 Lancer Evo GSR
    1996 Galant S 5 Speed Turbo
    Need a Turbo rebuilt or upgraded--> http://www.thegalantcenter.org/showt...ebuild-Service

  14. #34
    Experienced TGC Member mysticj's Avatar
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    Quote Originally Posted by Galanttuner10 View Post
    everything from the GS is completely obsolete and unavailable. the only parts still available are the rods. honestly go aftermarket or even go 96-98 64. and for rids, do the frankenstein setup. 1g rod bored out for the 22mm pin

    Even the cams aren't worth spit, IMO. That's why I'm going HKS 272 on the intake side but keeping the exhaust, which is 264.

    FYI, The GS cylinder head = 95-96 Eclipse = Lancer Evo III.

    What ECU are you going to use?
    94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU

    1994 GS FYI
    DSM/CSM Manuals

  15. #35
    You are here entirely tooo much!! Galanttuner10's Avatar
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    Quote Originally Posted by mysticj View Post
    Even the cams aren't worth spit, IMO. That's why I'm going HKS 272 on the intake side but keeping the exhaust, which is 264.

    FYI, The GS cylinder head = 95-96 Eclipse = Lancer Evo III.

    What ECU are you going to use?
    i have a 96 ecu setup, but will be going 95 eprom with link
    2014 Lancer Evo GSR
    1996 Galant S 5 Speed Turbo
    Need a Turbo rebuilt or upgraded--> http://www.thegalantcenter.org/showt...ebuild-Service

  16. #36
    Quote Originally Posted by Galanttuner10 View Post
    the gs cylinder head assembly part number has been obsoleted too and is now the 2g head assembly as well just so you guys know
    WEll fortunately the Hyundai Sonata in 97 and 98 had the exact head and intake and I have one! Thats why I didnt bother to buy the head and intake at the junkyard once I saw it in person.
    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  17. #37
    Quote Originally Posted by Galanttuner10 View Post
    i have a 96 ecu setup, but will be going 95 eprom with link
    I think I have one of those, is there an E somewhere in the part number? I think its on my shelf....I also have the Hyundai 2.0 ECM, same plugs, and I cant notice a difference in performance between one or the other.
    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  18. #38
    Here is a pic of the 2G head and intake / exhaust that Im switching to . Im starting to prep it. I have enough spare parts that I can pretty much assemble the entire assembly.I just have to have an o2 sensor port welded on the header.

    91 Galant GS, 7G 2.4 DOHC conversion 9.5:1 CR, 4 speed auto, 15" Mitsu rally wheels, 19560r15 Hankook Optimo
    98 Chevy Metro, 1.3 16V, 5 speed manual, 14" wheels
    96 Geo Metro, 1.0 3 cyl, XFI trans and cam, 64 MPG
    94 Hyundai Elantra, 7G 2.4 DOHC conversion, 10:1 CR, 5 speed, 19560r15 Falken ZE 912, 2.25 catback *****SOLD******

  19. #39
    You are here entirely tooo much!! Galanttuner10's Avatar
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    there is an E on the cover if the ecu in the bottom right, regular turbo ecus hace the T there. if it is eprom what is the part number?

    and what IM is that?
    2014 Lancer Evo GSR
    1996 Galant S 5 Speed Turbo
    Need a Turbo rebuilt or upgraded--> http://www.thegalantcenter.org/showt...ebuild-Service

  20. #40
    Experienced TGC Member mysticj's Avatar
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    I believe it's 96-98 Sonata.



    If you are using that Sonata head, then your compression should be around 10:1. If you milled the head, you can reach 10.5:1.
    94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU

    1994 GS FYI
    DSM/CSM Manuals

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