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Thread: Rebuilding Transmission...

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    Forum User verified Feedback Score 0 BigBoris's Avatar
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    5 Speed FWD Transmission Rebuild

    Ok, so after having my car sit for over 2 months I'm going to rebuild my transmission on my own... Anyone have some advice on where I can get information on this process? It's a 3000GT 5 speed FWD. I have already taken all the bolts off but can't seem to remove the bull housing. I was told to remove the shift selector but Have not figured that part out... The VR4 seems to have bolts holding it in while the Regular doesn't. If you can help in any way please call me 626-512-8150
    Last edited by BigBoris; 01-11-2011 at 10:12 PM.

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    You start the disassembly on the opposite side of the trans on a FWD model. You'll have all your gear sets sitting in the bell housing when you are done removing the cases. Start with the end case, then remove the 2 36mm nuts and pull off 5th gear and the idler gear. Then, you will unbolt the mid case from the bell housing and remove the one bolt that goes through the side of the mid case that holds the reverse idler gear. This will allow you to remove the mid case.

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    Thanks! So Here is how it looks right now.

    The two 36mm nuts


    Now i just need the 36mm Socket. =/
    Last edited by BigBoris; 01-09-2011 at 08:24 PM.

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    To remove the 5th gear assembly, you'll need to punch the dowel pin for the shift fork through. Then it will just slide off. The intermediate gear will need to be pry'd off. It's a bit of a bitch some times.

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    The reason I'm taking it apart is my differential blew up, or something did I have 3 holes all around my dif housing. I'm not sure what when wrong but before this happened i felt like it was locked up whenever i was using reverse. Would you happen to know where I might be able to get the parts inexpensively?

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    You'll want to finish opening up the trans before ordering parts. At a minimum you will need atleast some new gears for your differential. Those are a little over $100 from the dealer. Then you may be able to repair the bell housing depending on what it looks like inside, but it's best to just swap it out with a good one. I can help you out on some of the parts once you get the trans open. There may be other damage caused by the differential going bad.

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    The odd thing is this happened 30 miles from home and I was able to drive it home this way. When I inspected everything both driver and passenger wheels where getting power and all the gears worked fine. No grinding of gears, all entered smoothly, no weird noises. In fact the only reason i knew this happened was because I smelt the gear oil. So I'm hoping that was a good sign.

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    You're still in for some work. I've decimated 3 diffs. I was able to drive two of them home.

    You're going to need at least a diff and a bell housing.

    [06-05, 19:29] OhioSpyderman: Brian, finding a woman is NOT the answer, you need to shop for a good VACUUM

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    I bought a 3000GT from a local guy and he said it was leaking gear oil. The car drove perfectly fine but had a pin hole in the bell housing. Before that, I had bought a stealth and the trans was locking up both going forward and reverse. There was no hole in the bell housing until I pulled it into the garage and got it on the lift. Both cars had bad differentials.
    Last edited by Hans@GZP; 01-09-2011 at 09:45 PM.

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    I found this price on parts what do you guys think?

    FRONT DIFFERENTIAL SPIDER GEARSET
    $145. 93-99 FWD (larger axle)

    RIPGRIP FRONT DIFFERENTIAL - FWD type
    It's a limit slip insert for your transmission's open-style front differential that seems to work pretty good considering the price. CNC'd from steel and paired with some high tension springs so you get the most lock-up possible.
    $100. FWD FRONT DIFF W/ RIPGRIP EXCHANGE.

    So for around $245 I get new gears and limited slip dif. Is that a good price?

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