4g64 DOHC build question

Posted by Clever Gs-t, Mar 31, 2012

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  1. Clever Gs-t

    Clever Gs-t Proven Member

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    I have read up on the 4g64 DOHC build. My question is about the timing belt. I want to run a performance belt from HKS. But they do not offer one for the 4g64 so I am told. They do offer one for the 4g63 though. I know the 4g63 belt is 153 teeth and the 4g64 is 154 teeth. Is there a way to modify something on the tensioner to make this happen?

    Thanks in advance
     

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  2. ZeGaNe69

    ZeGaNe69 Proven Member

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    You can use double tensioner pulleys.

    For example:
    20483718fec703_o.jpg
     
    My DSM:
    1991 Mitsubishi Eclipse GSX

    Street Build

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  3. Clever Gs-t

    Clever Gs-t Proven Member

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    That looks like it will work. By giving adjustment on both pulleys. Thats pretty smart. Thanks!!!
     
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  4. bradselph

    bradselph Supporting VIP

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    Wow that's cool didn't know about the double tensioner pulleys. :thumb:
     
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  5. ZeGaNe69

    ZeGaNe69 Proven Member

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    What are the other options you know?

    My opinion is, that stock 4G64 timing belt can handle up to 300-350 Hp easily.
    If you are worried about breaking it, then just replace it sooner than after 54K miles. It is cheaper.

    That`s what I do, have always done and keep doing. :thumb:
     
    My DSM:
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    Street Build

    20g   manual
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  6. Bmx and Dsms

    Bmx and Dsms Probationary Member

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    Broadway, North Carolina
    in the image s that a 4g63 or a 4g64? because I need to find a replacement timing belt tensioner for it its the same model as the one on the example image
     
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  7. ZeGaNe69

    ZeGaNe69 Proven Member

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    On the picture have G64B, with 4g63 dohc head and 6-bolt 4g63 oilpump front end.
    You can see the head gasket`s height from water pump, which is 6mm (1/4")
    Both tensioners are exactly the same. Use 4g63`s timing belt kit.

    BUT, there is a catch- timing belt cover does not fit as the best as it should be. Why?
    1. Deck height
    2. Right tensioner is about 5mm to the right- may get rubbing to the belt cover.

    Ofcourse you can heat the cover with hairdryer and bend it a little bit and cover the missing 6mm on top with duck tape or etc.
     
    Last edited: Jun 16, 2013
    My DSM:
    1991 Mitsubishi Eclipse GSX

    Street Build

    20g   manual
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