GL1100 timing belt


Information and questions on GL1100 Goldwings (1980-1983)
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SteveK5257
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Joined: Mon May 11, 2015 12:41 pm
Location: Tacoma WA
Motorcycle: 1982 GL1100i

GL1100 timing belt

Postby SteveK5257 » Fri Jun 12, 2015 5:23 pm



While had the motor out to rebuild the starter clutch ( it was shot from sitting too long by a previous owner) I decided to go ahead and replace the timing belts. I had them lined up perfect until I retensioned them. I rotated the motor a coupe of times and looked again. This time they were off about a 1/16th. on the pulleys. This less than 1/3 of a tooth. Is this enough to be a problem?(I'm assuming so) How does one adjust less than a tooth?

Thanks for the help


(this is the last project before reinstalling the motor and I am eager to be riding)



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roadwanderer2
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Location: sweetwater, Tennessee
Motorcycle: 83 GL1100A aspencade, previously owned, 1981 honda GL500i silverwing interstate, 1974 yamaha xs400, 1974 Honda cb450 twin cam, 1983 honda vt30, 1982 honda 700 shadow, 1972 cb750four, and my first bike, a brand new 1982 honda CM400e. and a new to me 1986 GL1200 aspencade SEi
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Re: GL1100 timing belt

Postby roadwanderer2 » Fri Jun 12, 2015 6:21 pm

Hey Steve, here's an article you might want to look at. it should help you with your as it did with mine, plus a lot of help from some of the others on this site....http://ngwclub.com/forum/viewtopic.php?t=3544

my pulley was also about 1/16th off on the right side, i rotated the motor until the "T1" mark lined up with the notch on the top of the motor, put 2 large "C" clamps on both pulleys, put the belts on then put the new tensioners i bought onto the motor and let the new tensioner springs take up the slack on the belts, then making sure the pulleys didn't move off their marks, i released both "C" clamps, rotated the motor again, realigned the "T1" mark and did a valve adjustment to all the valves, put the motor back together and it ran fine, no problems with the pulley being that slightly out of "perfect".

stuart.

SteveK5257
Posts: 14
Joined: Mon May 11, 2015 12:41 pm
Location: Tacoma WA
Motorcycle: 1982 GL1100i

Re: GL1100 timing belt

Postby SteveK5257 » Fri Jun 12, 2015 7:10 pm

Thanks for the reply. However....... going from bad to worse, I had a friend over to help finish up. While trying to shift the belt one tooth, the left side sprocket jumped about 90 degrees and wouldn't easily rotate back. Perhaps We had it 180 degrees?

anyone know how to reline it without doing damage?

Thanks

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roadwanderer2
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Location: sweetwater, Tennessee
Motorcycle: 83 GL1100A aspencade, previously owned, 1981 honda GL500i silverwing interstate, 1974 yamaha xs400, 1974 Honda cb450 twin cam, 1983 honda vt30, 1982 honda 700 shadow, 1972 cb750four, and my first bike, a brand new 1982 honda CM400e. and a new to me 1986 GL1200 aspencade SEi
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Re: GL1100 timing belt

Postby roadwanderer2 » Fri Jun 12, 2015 8:09 pm

man, that's a problem. it wont move back because it might be on a compression stroke. make sure the arrow on both pulleys are straight up and the marks align with the mark on the motor and the word "UP" on the pulley is straight up. did you see which direction the pulley jumped?, (clockwise or counterclockwise)? can you rotate the pulley by hand in either direction to put the mark and the word "UP" on the pulley back to where its suppose to be? if you can put the pulley back to where the marks are lined up with the engine casing, and both "UP" arrows, (left and right pulleys) are up, do that and put a "C" clamp on the pulley,(you'll need 2 "C" clamps, one for the left pulley and one for the right pulley) so it don't move, put the belt and tensioner back on and try to rotate the motor by hand using the flywheel bolt to turn the motor. if it turns freely, the pulleys should be lined up, and the timing should be close, if the motor turns then locks while your trying to turn it by hand, STOP, move the flywheel in the opposite direction back to where the "T1" is lined up with the motor casing, don't try to force the motor to turn, you'll end up bending a valve. put a "C" clamp on the right pulley so it don't move, remove the LEFT belt and rotate the pulley to where the "UP" is straight up and the mark on the pulley is aligned with the mark on the motor, hold the pulley and put the belt and tensioner back on, release the right "C" clamp and try turning the motor by hand again. if it turns freely, you might have gotten it back in timing, if not, you'll have to do it over again until you get both pulley arrows straight up and marks lined up with the marks on the motor and the "T1" mark is aligned with the lines on the engine casing as it shows in the link i gave you. take your time, i know its a b***h, but with patience, it will work out. once everything is lined up, you can do your valve adjustment.

maybe wingadmin can give you more or a better way to straighten this situation out, but this is how i had to do mine when my pulley jumped until i got it right. it took me 6 or 7 tries to align the "T1" mark, arrows with the "UP" word on the pulleys to the marks on the engine casing so i could finish it up.

stuart.

SteveK5257
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Motorcycle: 1982 GL1100i

Re: GL1100 timing belt

Postby SteveK5257 » Fri Jun 12, 2015 8:13 pm

Jumped counterclockwise

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roadwanderer2
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Re: GL1100 timing belt

Postby roadwanderer2 » Sat Jun 13, 2015 6:47 am

'mornin SteveK:

ok, now that you know what direction it moved, use the C clamp and clamp the right side pulley up to the alignment marks and try to rotate it back by hand to where its supposed to be. once you do that, put the belt and tensioner back on, then try to rotate the motor using the flywheel bolt. if the engine rotates smoothly without locking up, you got it right, if not, align the right side pulley with the marks, clamp it so it don't move, remove the left belt and rotate the pulley 1 revolution by hand and try it again. your gonna have to keep trying . when both "UP"s and arrows align up and all the marks on the pulleys and the "T1" is lined up, and the motor turns freely you should be good to go.

here is a pic of the left pulley that's on my engine, left click on it so it will enlarge on your screen. my right side pulley was dead on the marks. your left pulley can be this far off and the motor will still work. notice where the "UP" word is and the alignment mark on the pulley and on the motor. if you can get yours as close as this, then do your valve adjustment after everything is bolted up, you should have no problems with your motor unless something else is wrong with it.

i did my timing belts this past April and I've already put over 400 miles on my bike already, so that should tell ya something.

stuart.
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SteveK5257
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Motorcycle: 1982 GL1100i

Re: GL1100 timing belt

Postby SteveK5257 » Sat Jun 13, 2015 9:34 pm

Well, the left pulley won't rotate back without force. I realize there's a chance that the valves are damaged.

1) if I take the rocker arm off, will that release the pressure and allow me to rotate the pulley back in position, re install the rockers and then (with the pulley securely clamped) replace the belt?
( Is this a workable idea and what are the pitfalls?)

2) Can I tell if any damage was done without removing the head?

As you probably guess, I'm on the end of my mechanical knowledge. ( my skill set is pretty much limited to unbolt and bolt back)

Thanks

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roadwanderer2
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Motorcycle: 83 GL1100A aspencade, previously owned, 1981 honda GL500i silverwing interstate, 1974 yamaha xs400, 1974 Honda cb450 twin cam, 1983 honda vt30, 1982 honda 700 shadow, 1972 cb750four, and my first bike, a brand new 1982 honda CM400e. and a new to me 1986 GL1200 aspencade SEi
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Re: GL1100 timing belt

Postby roadwanderer2 » Sun Jun 14, 2015 6:43 am

'mornin SteveK:

listen, when i first got this Goldwing 2 years ago i didn't know anything other than get on it and try to ride it. and with all the info on this site and with the help of all the people here, i STILL don't know anything..........just kidding lol. AW COME ON PEOPLE, IT WAS ONLY A JOKE. this site and its knowledgeable info and other wing owners are great, if it weren't for this site and its people, i wouldn't have been able to get my bike to where it is now, that's for DAMN sure. this website is invaluable.

let me ask you a question....have you removed all 4 spark plugs? that would release a lot of compression making the engine easer to turn by hand. try doing that first before you start taking the rockers apart, then try to turn the pulley by hand first after the right pulley is lined up. remember to clamp the right pulley once its lined up, and have the left belt removed.

stuart.

SteveK5257
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Motorcycle: 1982 GL1100i

Re: GL1100 timing belt

Postby SteveK5257 » Sun Jun 14, 2015 10:26 am

Currently 4 plugs out, but right belt is in place. Later today I'll try clamping then removing the right belt to see if that works
thanks

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roadwanderer2
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Re: GL1100 timing belt

Postby roadwanderer2 » Sun Jun 14, 2015 12:06 pm

SteveK5257 wrote:Currently 4 plugs out, but right belt is in place. Later today I'll try clamping then removing the right belt to see if that works
thanks


leave the spark plugs out and the right belt on and clamped when its lined up. try turning the left pulley by hand until you can line it up with the arrow straight up or as close to straight up as possible like it shows in the link of my left pulley photo and the pulley alignment mark lined up with the motor, put the belt and tensioner on, then release the right clamp after you have the belt back on and lined up. turn the motor 2 complete revolutions to see where the marks on the pulleys are along with the "T1" mark on the flywheel and engine casing. if everything is lined up, all the arrows, alignment marks and the "T1", you should be good to go. remember, if the motor locks while your turning it, STOP. don't try to force it to turn. rotate the flywheel back to where the right pulley arrow and mark is lined up and try to align the left pulley arrow and mark up again. take your time, you'll get it done eventually.

stuart.

T-Rat
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Re: GL1100 timing belt

Postby T-Rat » Sun Jun 14, 2015 12:35 pm

To be on the safe side......back off the adjustments on the valves on that side.....not only will that make it easier to turn because you won't be fighting the valve spring tension. It will not let any valves hit the pistons as you turn the cam back. Hopefully they didn't hit when it jumped on you. I do this on both sides when replacing the belts just to be safe. Of course after you get the belts correct you will have to adjust the valves but I would do that anyway after a belt replacement!

SteveK5257
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Re: GL1100 timing belt

Postby SteveK5257 » Sun Jun 14, 2015 3:28 pm

Thanks for the help. I have it lined up now. Next to adjust the valves.

Are there any clues to a bent valve before I reinstall the motor and start her up?

seems to rotate freely right now.

If the valves adjust properly and the motor still rotates freely, am I in the clear?

Thanks again

T-Rat
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Location: knoxville tn
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Re: GL1100 timing belt

Postby T-Rat » Sun Jun 14, 2015 3:44 pm

no way to be absolutely sure but if when you turn it by hand watch the valves. If they all go in and seem to come all the way out and you don't feel anything weird then you can feel better. When you start it listen for unusual noise and if you hear anything shut it off quick. IF it seems to turn free by hand you could run a compression test before starting on those two cyl. If a valve is bent or a piston is cracked the compression will be down on that cyl.

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roadwanderer2
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Motorcycle: 83 GL1100A aspencade, previously owned, 1981 honda GL500i silverwing interstate, 1974 yamaha xs400, 1974 Honda cb450 twin cam, 1983 honda vt30, 1982 honda 700 shadow, 1972 cb750four, and my first bike, a brand new 1982 honda CM400e. and a new to me 1986 GL1200 aspencade SEi
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Re: GL1100 timing belt

Postby roadwanderer2 » Sun Jun 14, 2015 4:34 pm

Hey SteveK, glad to hear you finally got everything lined up. now when you spin the motor by hand do it slowly and watch all the valve movements. they all should move completely in and out.

here's a "how-to" article on adjusting the valves on your motor.....viewtopic.php?f=11&t=2229

im sure you'll get it running real soon.

stuart.

indianakid
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Re: GL1100 timing belt

Postby indianakid » Mon Jun 15, 2015 8:41 pm

i would run a leak down test to verify that there is / is not any damage to the valves. with the engine out, carbs and exhaust off it will be very easy to tell if a valve is not properly sealing. wish you the best !!!

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littlebeaver
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Re: GL1100 timing belt

Postby littlebeaver » Thu Jun 18, 2015 12:00 pm

Yep, a compression test will let you know....

SteveK5257
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Re: GL1100 timing belt

Postby SteveK5257 » Thu Jun 18, 2015 2:35 pm

Did a quick compression test. They were all a bit low but all within a few pounds of each other

T-Rat
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Re: GL1100 timing belt

Postby T-Rat » Thu Jun 18, 2015 4:47 pm

that should mean that all's well.....if a valve got hit and bent that cyl would be very low

SteveK5257
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Re: GL1100 timing belt

Postby SteveK5257 » Thu Jun 18, 2015 5:15 pm

I'll know this weekend as I will ( hopefully) get the engine back in the bike

SteveK5257
Posts: 14
Joined: Mon May 11, 2015 12:41 pm
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Motorcycle: 1982 GL1100i

Re: GL1100 timing belt

Postby SteveK5257 » Thu Jun 25, 2015 10:02 pm

OK guys, engine is back in. All reconnected (I hope). Start clutch works beautifully ( the reason for this whole project) When I tried to start it, major backfiring. not constant 5-8 seconds apart but some are quite load.

Any thoughts.

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roadwanderer2
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Joined: Thu Aug 08, 2013 4:03 am
Location: sweetwater, Tennessee
Motorcycle: 83 GL1100A aspencade, previously owned, 1981 honda GL500i silverwing interstate, 1974 yamaha xs400, 1974 Honda cb450 twin cam, 1983 honda vt30, 1982 honda 700 shadow, 1972 cb750four, and my first bike, a brand new 1982 honda CM400e. and a new to me 1986 GL1200 aspencade SEi
Contact:

Re: GL1100 timing belt

Postby roadwanderer2 » Fri Jun 26, 2015 7:02 am

sounds like the timing is still off. if you can, try to remove the timing belt covers and check the pulleys to see if they are inline with the engine casing marks and the "T1" mark on the top.

stuart.




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