My 73 Yamaha TX750 Rebuild....

Discussion in 'Old's Cool' started by bulldog1980, Aug 28, 2008.

  1. far2389

    far2389 Adventurer

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    I sold all the adapters I had, but there is a guy selling same item on ebay for $60. (same as ones I was selling)
    #81
  2. concours

    concours WFO for 41 years

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    Just use a motorcycle specific 20-50, rated for wet clutch. I have been running Amsoil full synthetic 20-50 for 4,000 miles, no clutch slippage. Owners manual can be downloaded here: http://www.tobyfolwick.com/tx750/
    [​IMG]

    [​IMG]
    #82
  3. concours

    concours WFO for 41 years

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    I have an aquaintance with a couple for sale as a package if any tuning fork faithfull wants a vintage project :1drink
    #83
  4. farmrjohn

    farmrjohn Been here awhile

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    A couple of more questions. 1. for Isettle (or anyone else with an oil cooler)-do you have a diagram or pics. of the lines to and from the cooler as well as how the cooler mounts? 2. for concours-what handlebar did you wind up using? The one on mine seems to be shorter than the ones shown in the "official" photos and I wouldn't mind a little more upright riding position. Thanks.

    re. an update on mine: I now have about 500 miles on it after attending to the top end and other issues. It runs well but the oil/case temperatures seem warmer that I'm used to, hence the desire to add a cooler. I also need to correct a pre-existing dent in the fuel tank.
    #84
  5. concours

    concours WFO for 41 years

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    The bars I ended up with are the XS650 bars from www.mikesxs.com and the oil cooler is the specific one for the TX, issued trying to stop the engine failures. (Any Lockhart will work just fine) but the answer was the sump extension. Shoot your oil tnk with a IR temp gun? HOW hot?

    [​IMG]
    #85
  6. farmrjohn

    farmrjohn Been here awhile

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    I have used an instant read kitchen thermometer in the oil tank just after riding now a couple of times and get 180 degrees. Both times the outside air temperature was around 60. During the summer the air temperature can go over 100. I found a 750 cooler on ebay which is on the way, but have questions on routing the in and out lines between the case, tank, and cooler.

    Did you use the Part #25-0654 bars from MikesXS? If I'm measuring correctly the ones on the bike have about a 2" rise, and I'm not sure on the pullback. Width is 28" and I wouldn't mind a bit narrower, but that would crowd the switches and brake cylinder.
    #86
  7. dm635

    dm635 I Roll

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    Just found this post. I have good memories from the TX750-A I rode for 8 years. This was back in the 80's & I don't remember seeing any others even back then. Sounds like I must have gotten a good one. I didn't beat it , but I did ride it. Did have the electric start problem & got parts to repair. I'm thinking it had an adjustment for cam/balancer chain. Was the Purple color & did look good. Saw a sad one a couple years ago at the Mid Ohio swap meet. Hardly even a parts bike.
    #87
  8. concours

    concours WFO for 41 years

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    Yup, purple was '74, all updates included right out of the box, the starter still sucked though.
    #88
  9. concours

    concours WFO for 41 years

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    Sorry I missed this, yes, #25-0654 is what I used. You need an oil cooler with 1/2" ports, most are 3/8". The scavenge line is the one to cut, (goes to the TOP of the oil tank.)
    #89
  10. dm635

    dm635 I Roll

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    Wish I could find some old pics of this bike. They'd be from the 80's. Used to ride with a guy that took his new KZ1000 home still in the crate. We could cruise together all right, but his throttle did much more than mine. I'd kick down twice and still do no good to leave his ass. But I still enjoyed the bike for what it was.
    #90
  11. MeatCone

    MeatCone n00b

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    I just picked on up that is 98% there. Reading up on the post I think the $150.00 I spent may have been $175.00 to much. Hopefully I can get it running cheaply as it cranks over and didn't sound like it was coming apart.

    Oh and yes it is a 73 TX750 Lucky me!
    #91
  12. concours

    concours WFO for 41 years

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    Welcome! There isn't many of us...
    #92
  13. MeatCone

    MeatCone n00b

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  14. concours

    concours WFO for 41 years

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    #94
  15. CalsXS2

    CalsXS2 Been here awhile

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    Hey. It has the factory oil cooler. But I don't see the extended sump. Does it have that.

    Why don't you start your own thread, post a bunch of picture's,,, and let's have at it.

    BTW. I have a 73. :D
    #95
  16. farmrjohn

    farmrjohn Been here awhile

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    It does look like a '74. I would say $150 was a good buy from the picture. It would be interesting to compare the engine and frame number since as mentioned it doesn't look like it has the deeper sump of the 74. Good score with the factory oil cooler.
    #96
  17. hunter_greyghost

    hunter_greyghost XS650 Allroads Traveller

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    [​IMG]
    Luv that colour, why didn't Yamaha bring out an XS650 model with it? :lol3
    Cheers
    Baza
    #97