1973 yamaha rt 360 build

Discussion in '2 smokers' started by crawler07, Nov 1, 2010.

  1. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
    70
    This will be an intro for me as well as a first thread. I love all types of bikes street dirt and all things in between! I have worked at a yamaha/honda dealership for 18 yrs and loved every second of it I have restored a few bikes over the years and am currently working on 3. This thread will be on the RT I bought off a buddy that didnt have the time to deal with it (not that I have the time)but I just cant turn away a good bike:D
    This bike has been sitting for around 20yrs and when I got it home I took the carb off first thing and to my surprise it was dry as a bone and clean as could be inside!! So I cleaned the outside up and reinstalled it Then it was onto the tank It had a liner that was around 25 yrs old and looking loke it, it had started to dissolve into the petcock . I jumped the gun alittle and took the tank to be lined and started to clean out the petcock. Then I got the tank back and checked for spark and their wasnt any so I checked the coil and it looked like the wire was alittle corroded at the plug so I clipped it back a 1/4 inch and their was a good spark!! Well I installed some gas a new plug and some new oil and kicked it over a few times with the switch off just to get things moving and then looked around for someone to come watch as this relic was about to come to life!! The only person I could find was the wife so I coaxed her into coming out to watch and in one good kick the thing actually started!!!!!!!! I was so stoked!!! Then my wife said hey it looks like its smoking bad:rofl .... I tried to shift ti first and the thing took off,,,,,,the clutch was stuck No big deal the fibers were still available so I replaced them and its a good runner now!!!
    So I decided to turn my attention to a few cosmetic things like the bars they were nothing but rust so I replaced them with factory new ones! Then I cleaned up the wheels and hubs as well as the forks and shocks .I cut the old narrow footpegs off and welded up some new mounts to fit some moose wides.. Then ordered a seat cover and foam from ceet I gotta say Im not to happy with it Its just to tall so Im contemplating cutting it down to the stock height....Well sorry for the long winded story, but I just wanted to get you all caught up to where Im at with this one..
    Ill have pics in a few min....
    #1
  2. Foot dragger

    Foot dragger singletracker

    Joined:
    Dec 27, 2006
    Oddometer:
    13,765
    Location:
    chico,just below rag dump(nor-cal)
    Always good to get an old 2 stroke bomber back on the trail, Looking forward to pics.
    #2
  3. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
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    heres the pics
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    and this is the seat foam that looks way to tall??
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    and the peg mod
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    #3
  4. Valleyrider

    Valleyrider I Survived The '60s

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    :lurk
    #4
  5. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
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    so what do you guy think of the seat? is the foam to tall?
    [​IMG]
    #5
  6. MNellis

    MNellis Been here awhile

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    Nov 5, 2008
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    127
    Location:
    Georgetown, TX
    Yup.
    #6
  7. davevv

    davevv One more old rider

    Joined:
    Aug 17, 2006
    Oddometer:
    2,480
    Location:
    Just north of Dallas
    Absolutely. Should look more like this '74.
    [​IMG]
    #7
  8. crawler07

    crawler07 Adventurer

    Joined:
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    Oddometer:
    70
    I guess I should give ceet a call tomorrow and see what the deal is? Isnt a 74 a DT? Would they be different?
    #8
  9. davevv

    davevv One more old rider

    Joined:
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    Location:
    Just north of Dallas
    Yes, the '74 is a DT360A. I think there is a slight difference in the length of the pans between some years, but the shape is the same, I believe. The shape of your seat looks more like what was on the MX360 but even then it's still too tall, and they had a different cover also. Maybe CEET intended for you to be able to trim their foam?

    I just rebuilt this seat a week ago because the old foam was getting hard and crumbling. The shape is very close to the original. I posted the process in this thread. http://www.advrider.com/forums/showthread.php?t=631648

    Here's a pic of an original '73 RT3
    [​IMG]
    #9
  10. crawler07

    crawler07 Adventurer

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    #10
  11. davevv

    davevv One more old rider

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    Location:
    Just north of Dallas
    Does the new foam have holes in the bottom like the original? If so, you'll have to carve on the bottom instead of the top like I did. Hopefully you still have the original to use as a pattern.

    I think I'd call CEET first and see what they have to say. Maybe they just made a mistake and sent you the wrong part. I didn't call them because it looked like they didn't have a foam specifically for the '74 available and it isn't a big job to make your own.

    Good luck with it.
    #11
  12. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
    70
    Called them today they said they sent me the foam for an early model and that they are working on a 72 73 model and it will be finished in a month and I could send this one back and they would send me the new one for the price of shipping..So its all good I still have to paint it and that will take a while so I have time..
    #12
  13. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
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    made a little progress on the RT, I have sent the foam back and received the correct foam and a new seat cover. Ive installed them, but havent taken a pic yet. I have started modding a second tank and I think it is looking cool! The potmetal ring around the steel tank neck that holds the gas cap on had pretty much rotted off, so I found a weld in pop up style gas cap and made it fit with a little solversolder..


    heres how the tank turned out, still have alot of small pin holes under the tank to fill and strip it of the old paint and then have a friend paint it baja brown !

    pop up cap
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    the neck minus the factory cap mount system
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    thought it would be a good idea to drill all the way around the neck and then play connect the dots with the dremell.
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    and the finished opening
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    bung all brazed in
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    #13
  14. diggersrule

    diggersrule Adventurer

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    Location:
    ofallon, Missouri
    very cool
    #14
  15. crawler07

    crawler07 Adventurer

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    Oct 19, 2010
    Oddometer:
    70
    thanks diggersrule!

    I have a question, Im thinking the stator side crank seal is bad do you all know if I can change it by simply removing the flywheel and prying it out from their or is their an inner lip on it? which will make it so I have to split the cases to replace it??
    #15
  16. JeffS77

    JeffS77 cheap bastard

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    #16
  17. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
    70
    thanks for the help Jeff..
    Since last post I have rode this bike a ew times and the piston slap was driving me crazy so I decided to remove the top end and replace the piston,but I also decided it needed new crank seals so I decided to remove the engine from the frame.Well I thought if I have the engine out I may as well paint the frame and body panels so thats where im at:D
    and heres the pics..
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    I have painted the frame, but didnt take a pic yet, but I will so stay tuned!
    #17
  18. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
    70
    and painted!\
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    [​IMG]
    #18
  19. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
    70
    Well the tank on this bike was a little rusty inside and it had alot of pin holes..The only thing I could come up with for a fix was to cut the bottom of the tank away and repair the tunnel..

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    decided to do it in 5 sections
    and the first
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    then I flatened out the piece I removed
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    then made a new one
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    bent it up and fitted it
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    welded in
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    on to the next cut
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    cut replacement
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    and then ran out of time

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    #19
  20. crawler07

    crawler07 Adventurer

    Joined:
    Oct 19, 2010
    Oddometer:
    70
    Ok I finished the tunnel and checked the welds for any holes by turning off the light and placed a light in the tunnel and checked for light to come through from the other side.

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    then started to joined the to pieces to make a tank again!
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    and the hole thats still left to fill
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    #20