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Thread: Years with Yamaha SXViper

  1. #21


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    Update, cleaned carbs and fitted them to modded airbox. Added fuel lines also.
    38mm cleaned.jpg

    Removed that pin and welded it. Now it is same as sxviper cover.
    wpump cover.jpg

    And what do you guys think about modding that water rail? I want to make it fit straight to viper coolant system. I think that if i cut everything marked on red and then i weld connector straight to side. I may have to use new L-shaped cooland hose, but then i can use just one hose. Hope u understand what i mean
    rail mod.jpg
    Yamaha SXViper 2002
    2" riser
    44" stance
    Blue headlight cover
    DIY windshield
    18.9" fox floats on front end and 18.7" fox float on rear skid
    Tunnel stiffeners and protective tube

  2. #22


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    what is the grey stuff between the air box and carbs? sealant?

  3. #23
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    Yea. It looks like Permatex RTV grey. Nothing wrong w/ that procedure. I use removable silicone sealant on most all "joints" between the carbs and fresh air.
    Dannyboy

  4. #24


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    that what I thought especially after this week when I removed my air box in my viper and noticed that it was not really sealed compared to my vmax that have clamps with screws.

    I thought about asking a question about that but I have my answer now!!!! will do the same when putting it back.

  5. #25
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    On the thermostat "cover", you could cut the outlet, rotate it to your desired position and then re-weld.

  6. #26
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    1 out of 1 members found this post helpful.

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    IMG_0111.jpg
    Just clean the surfaces w/ Naptha. I even put a bead around my boost bottle ports before they get pressed into position and pressure clamped.
    Last edited by A couple of bucks; 10-21-2018 at 10:06 PM.
    Dannyboy

  7. #27


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    That grey stuff is just normal silicone sealant, maybe i should clean it little.

    Weather started to get cold so i have to start my triple, it is pretty low when shocks out of air seasonfirststart.jpg

    Made new brackets for bigbore motor, also changed rear bracket because it was broken.

    engine brackets.jpg
    bracket broken.jpg

    Changed new cylinder and piston for hauck 780 and modded water rail. Water rail looks awful, it was really hard to weld. Especially it was my second time to try aluminium welding

    780 rear.jpg
    780front.jpg
    780side.jpg

    I also started to mod those ruined bigbore pipes, but i flanges won't fit stock cylinders... Have to assemble bb motor and then i can mod those pipes.

    hauck800bbpipes.jpg
    Yamaha SXViper 2002
    2" riser
    44" stance
    Blue headlight cover
    DIY windshield
    18.9" fox floats on front end and 18.7" fox float on rear skid
    Tunnel stiffeners and protective tube

  8. #28


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    Nice mod and lots of hard work through the years, Vipers are great sleds with a lot of possible mods ! Keep the story rolling SX !
    Blue
    I want my SRX back!

  9. #29


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    Hello, nothing special yet. Found old crankshaft in the box, but i can't figure out where is it from. There is text 8df, how can i measure is it 59.6 or 62mm stroke.

    I was also thinking that is it possible make "big" triple with srx or Viper crankshaft and cases and then fit SxR 700 70.5mm cylinders to cases with right spacer like hauck 800bb kit?

    I was also thinking that what is difference with viper ja srx hauck 780 kit. Found those cdi timing curves and makes me think that is there something other things what i should know. I don't want to burn that engine immediately��

    Timing numbers what i found on forum:

    SRX 700

    7750rpm - 18 degrees
    8000 - 13.5
    8500 - 9
    9000 - 4

    Stock Viper

    7750 - 24 degrees
    8000 - 18
    8500 - 18
    9000 - 13
    9250 - 11

    Pic of Crank:

    IMG_20181223_204801__01.jpg

    Something offtopic:

    My hometown local motorcycle racing, i have riden over +170km/h on main straight with viper. Snowmobilerail goes near railway track and it is not straight or that long, nowaday i would scare a lot to drive that fast��

    Here is some link, check it!
    Yamaha SXViper 2002
    2" riser
    44" stance
    Blue headlight cover
    DIY windshield
    18.9" fox floats on front end and 18.7" fox float on rear skid
    Tunnel stiffeners and protective tube

  10. #30
    Senior Member Open Mod A couple of bucks's Avatar
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    Quote Originally Posted by sx viper View Post
    Hello, nothing special yet. Found old crankshaft in the box, but i can't figure out where is it from. There is text 8df, how can i measure is it 59.6 or 62mm stroke.
    The box looks "original". Are there any clues on it that could be useful?
    Dannyboy

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