ZX2 Manual Transmission Rebuild | Ford Escort Owners Association (FEOA)
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ZX2 Manual Transmission Rebuild

Discussion in 'Drivetrains' started by zombiedraken, Jul 11, 2020.

  1. zombiedraken

    zombiedraken FEOA Member

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    My car has the G5M MTX from a 1998 ZX2. I already had to tear it down and put in a new 3/4 shift fork, I sourced that from a G6M. It is a much beefier part and I think it will last longer than the flimsy one installed by Ford in the original trans. I broke that one, the tab that moves the synchro broke off.

    Anyways, that was a couple years ago and the car had been sitting for a while because I found that both the fifth gear synchro ring and reverse ring were cracked and so i put the project on hold due to life and job.

    Today I decided to browse online looking for a replacement and I stumbled upon a thread on here about MTX rebuild kits;

    https://www.feoa.net/threads/sourcing-3rd-gen-mtx-rebuild-kit.88785/

    I went onto that cobratransmission.com site listed there and found a kit for the M5TXA which it says will work for the Escort ZX2. It appears to be the same part number, BK210AWS, same as what you guys use in the TR5A. According to the link, some of you bought this kit from there.

    They also have a synchronizer ring kit, SRK210A, but I'm thinking I should get the whole kit in case I ever need to replace the bearings too, I'm thinking I should also replace the seals before I put it back in the car.

    My question is to both the quality of the kit and whether or not this site is still legit, I don't want to spend my money there if it's a scam, I found similiar kits elsewhere but they will cost nearly twice and I'm trying not to spend too much.

    Any input is appreciated.
  2. ShakeZilla19

    ShakeZilla19 My name is ^^^

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    I ordered a TR5C kit which has the same part number as the M5TXA (P/N: BK210AWS) from Cobratransmission in november 2019 for my 99 Zx2. The synchros all look correct and the bearings are Koyo and NSK Brand, both made in Japan. The seals are the correct size too. I say the kit is good. Only thing is you do not get the shaft lock nuts which are suppose to be replaced after every use; I re-used one with the application of red loctite.

    I only ever used the bearings for the Differential as I realized I didn't have the proper tools to replace the synchros. FWIW, I have not had any issues with the transmission after about 1000 miles and 2 racing events.

    I'm looking to sell a partial kit if you're interested. I can post some good photos of the parts.
    zzyzzx likes this.
  3. zombiedraken

    zombiedraken FEOA Member

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    I might be interested, last time I checked the bearings were all good and the only seals I would likely replace are for the axles. All I really need is those brass 5th and reverse synchro rings. If you want to post pictures I will check them out.
  4. zombiedraken

    zombiedraken FEOA Member

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    You wouldn't happen to know the part numbers for those lock nuts would you? I decided to reuse those nuts and just restake them. I used to have all the part numbers for the trans written down but I lost it.
  5. ShakeZilla19

    ShakeZilla19 My name is ^^^

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    Ok, I will get the photos up here in a few minutes.

    FYI, I have some info on my trans rebuild here.
    https://www.feoa.net/threads/shakes-zx2-build.114192/page-3

    I do not have good info on the stake nuts. Only reason I cared to replace them was because I destroyed the stake ring on one of them.

    The Factory Service Manual states P/N: 7N170 for both shaft nuts.

    I bought 2 different ones and only one worked I do not recall which one is ok:
    Primary Shaft Stake Lock Nut. ~$15
    F520-17-628
    QTY=1
    Secondary Shaft Stake Lock Nut. ~$15
    F521-17-628A
    NEW PART NUMBER: G501-17-629A
    QTY=1

    If at all possible try to find the 7N170 ones or just reuse the old ones with loctite.
  6. ShakeZilla19

    ShakeZilla19 My name is ^^^

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    The factory manual shows that the both nuts should not have an integrated washer otherwise the nut will be too tall for the shaft threads.
  7. zombiedraken

    zombiedraken FEOA Member

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    That's okay, I had to make a new one out of a lock nut from one of the hubs, the originally had to be cut off because it got some metal shavings or dirt or something caught in the threads and got locked onto the output shaft. i had to ground down the integrated washer so it would thread all the way down onto the shaft. Worked out pretty well. I believe it was the one for the secondary shaft.
  8. ShakeZilla19

    ShakeZilla19 My name is ^^^

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    Synchro Set
    [​IMG]
    Large synchro 1 of 4 clutch side
    [​IMG]
    other side
    [​IMG]
    5th and reverse
    [​IMG]
    Clutch side
    [​IMG]
    seals
    [​IMG]
    bearings
    [​IMG]
    [​IMG]


    I was thinking $80 shipped for the whole kit. 6 synchros, 4 new seals, and 4 quality bearings. I can throw in 2 diff bearings that I was going to sacrifice but are made in china.

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