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Thread: Lt 80 clutch

  1. #1
    Join Date
    Jan 2004
    Location
    MO
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    174

    Lt 80 clutch

    can anyone help? info on new clutches for an 80? also are they in the right side of the cases, i aint worked on this machine before so i was just wondering. you guys that have them is it normal for them to rev way up before they slowly take off? its all stock and the engine has just been rebuilt. any pic's of clutch would be great. THANKS
    ~03 300ex~
    *HMF*Renthals*DG nerfs,frt bumper*
    ~87 LT80~
    ~04 KLX125L~

  2. #2
    Join Date
    Dec 2003
    Location
    Texas
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    1,661
    The clutches on the lt80 are on the r/h side of quad.
    It sounds like your rollers in the front variator need replaced.
    Not a bad job just a lota time.
    Also clean out clutch belt area with carb cleaner,remove belt dust.
    There are six rollers.
    Hope this helped.
    LMS Racing....
    Metal fab & welding

    Thanks to JH-Racing

  3. #3
    Join Date
    Dec 2003
    Location
    Texas
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    1,661
    Sorry the clutches are on the LEFT side.
    Big long metal cover.
    LMS Racing....
    Metal fab & welding

    Thanks to JH-Racing

  4. #4
    Join Date
    Nov 2001
    Location
    Mississippi
    Posts
    1,392
    The rollers get gummed up (and worn too) after awhile and they need to be serviced with anti-seize... messy. SS is right, they are on the left side of the motor. When Madmatt300 was on it, and it was ridden hard, I had to do it once a year or so. There is really no big deal about working on this side of the motor, just disconnect and plug the oil lines to remove the cover completely; as the oil pump is on this side. Its been awhile since I worked on this motor since my 6 year old is putting around on it now... But, I think you'll need an impact to remove and install the clutch nut. The seal will probably be okay to re-use. There are lots of tricks to do to this motor and clutch as your kid gets more advanced.... I wish I had all the e-mails still detailing them. Oh yeah, you can prolly re-use the gasket, but if its bad, replace it. The belt hates water!
    Honda, Best On Earth
    2000 400EX, 1996 300EX and a 1997 LT80 - each with a bunch of custom schtuff on'em!
    2001 CR250
    2002 KDX220

  5. #5
    Join Date
    Jan 2004
    Location
    MO
    Posts
    174
    does this thing have clutch springs ? my little girl rides it pretty hard when she rides but we dont race or nuthin just play around but she wants more take off power.
    ~03 300ex~
    *HMF*Renthals*DG nerfs,frt bumper*
    ~87 LT80~
    ~04 KLX125L~

  6. #6
    Join Date
    Nov 2001
    Location
    Mississippi
    Posts
    1,392
    Unfortunately, nobody makes springs for this quad. Unless its in the last 2 years. Here is how it works: The front clutch and rear clutch both control "shifting". As speed increases, the front clutch gets bigger and the rear clutch gets smaller. Also in the rear clutch are the clutch shoes. This is where the springs (which nobody makes) are. There are 3 shoes. The weight of these shoes can be reduced to make the engagement time higher up in the RPM range. Some guys take off a lot.... too much if you ask me, (I'm conservative) but if you have full race motor (high rpm) and drag race, its prolly good to go light. By shaving weight (they are like lead) from the tail of each shoe, you can make the LT come alive pretty good, even with a stock motor. You'll need a fairly accurate gram scale (postal) to do this and a heavy file.... a grinding wheel gets clogged. The front clutch, which really controls shifting can be changed too. Some guys have different weight rollers and some just remove and install the stock ones until they get the shifting where they want it to be. I am running 4, but if I had a stock motor, I would run all six. I tried 3, but the motor didn't RPM enough and the tranny stayed in "low gear".

    I think I may have some more info in a folder at work... As far as, weights...... There are other tricks for this little quad! I'll put ours against any of the other brands in the woods! Anybody can go fast in the open... its obstacles and terrain that proves the performance of a quad and rider!
    Honda, Best On Earth
    2000 400EX, 1996 300EX and a 1997 LT80 - each with a bunch of custom schtuff on'em!
    2001 CR250
    2002 KDX220

  7. #7
    Join Date
    Jan 2004
    Location
    MO
    Posts
    174
    thanks for the info, i finally got the side case off that was a ..... anyway if you do have any more info i would really like to know anything anyone might have
    ~03 300ex~
    *HMF*Renthals*DG nerfs,frt bumper*
    ~87 LT80~
    ~04 KLX125L~

  8. #8
    Join Date
    Jan 2004
    Location
    MO
    Posts
    174
    ? what kind of oil in the case where rear clutch is? i just found the drain plug and the oil has alot of water in it! im going to clean all parts in it up but i need to know what kind or type of oil it uses? THANKS ahead
    ~03 300ex~
    *HMF*Renthals*DG nerfs,frt bumper*
    ~87 LT80~
    ~04 KLX125L~

  9. #9
    Join Date
    Nov 2001
    Location
    Mississippi
    Posts
    1,392
    No oil in the clutch area.... it should be nice and dry. It sounds like the gasket is leaking already or the little LT has been submerged before. I think we're getting to the problem here... a slipping belt! You may want to get a new belt while you're in there.., but mine is still original equipment.. anyway, the clutch is air cooled by the hoses that come into it. You'll find quite a bit of dust and prolly some sand in there... the dust is what gums up the rollers. The only oil in the motor is in the gear box. See the fill screw (bolt) on the top of the case right behind the cylinder? You fill it until the oil weeps though the check screw (bolt) on the right side of the motor. The drain is directly underneath the gearbox... I think all 3 holes "kind of line up" from top to bottom.
    Honda, Best On Earth
    2000 400EX, 1996 300EX and a 1997 LT80 - each with a bunch of custom schtuff on'em!
    2001 CR250
    2002 KDX220

  10. #10
    Join Date
    Jan 2004
    Location
    MO
    Posts
    174
    let me try to clear this up. the milky looking oil is in the case next to the rear clutch. the little case the gears are in that run the front sprocket, not on the belt. i dont know maybe the oil is the same as in the bottom end of motor but i didnt think so. there was only about a half a pint that drained out. what oil do you put back in? also what oil goes in the bottom end of motor?
    ~03 300ex~
    *HMF*Renthals*DG nerfs,frt bumper*
    ~87 LT80~
    ~04 KLX125L~

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