GL1100 Timing Belt Issue


Information and questions on GL1100 Goldwings (1980-1983)
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PRACTIKALGUY
Posts: 70
Joined: Mon May 13, 2013 12:45 am
Location: MADISON, WI
Motorcycle: 1983 GL1100A Aspencade

GL1100 Timing Belt Issue

Postby PRACTIKALGUY » Wed Feb 19, 2014 7:18 pm



So, I just put the heads back on my Aspencade, and realized that the crank had moved. Before I started, I was careful to line up with the T1 mark but, long story short, I'm not sure if the "up" was up or down on the pulleys. I go to put the new belts on and it dawns on me that I don't know if one's 180 out, both are 180 out, or if they're dead on. Can someone please tell me which valves should be opening on each side when it's at T1 with both pulleys "up"? I've loosened the cams so I can rotate the pulleys if needed, without removing the heads.
And, yes, I do feel really dumb.... :cry:



PRACTIKALGUY
Posts: 70
Joined: Mon May 13, 2013 12:45 am
Location: MADISON, WI
Motorcycle: 1983 GL1100A Aspencade

Re: GL1100 Timing Belt Issue

Postby PRACTIKALGUY » Wed Feb 19, 2014 8:44 pm

I think I may have figured it out. Could someone let me know if this sounds correct?
Rotate the engine until I see the #2 intake valve open and close (it's easier to see while rotating the engine from the flywheel access hole), then proceed to the next T1 mark and the "up" on the pulleys should be down. Rotate another 360, and #1 is at TDC, pulleys should be up, check that all is lined up properly and I'm good.

Sound right?

User avatar
RBGERSON
Posts: 2615
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: GL1100 Timing Belt Issue

Postby RBGERSON » Sat Feb 22, 2014 7:52 am

With the cams are really loose /backed off it's hard to tell if the valves are loose or not..but T1 TDC on #1 = loose tappets and on up on the wheels

1 intake and exhaust are loose
3 exhaust loose
4 intake loose



rotate 360 to t1 again and

2 intake and exhaust loose
3 intake loose
4 exhaust loose
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: GL1100 Timing Belt Issue

Postby David-Mantle » Sat Feb 22, 2014 10:06 am

Exactly same procedure as the 1 litre engine http://www.ngwclub.com/forum/viewtopic.php?t=3544
Best and most comprehensive walk through I could find for you

Hope it helps
The only silly question is the one you don`t ask. Everything else is game.

http://www.ngwclub.com/shoptalk/
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User avatar
RBGERSON
Posts: 2615
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: GL1100 Timing Belt Issue

Postby RBGERSON » Sat Feb 22, 2014 1:55 pm

I think the issue is he moved the crank w/o marking TDC on it..so now the only way to find it is to rotate the crank until the #1 piston is at TDC on the compression stroke..when both valves are closed..but he loosened the tappets so the valves will appear closed all the time..????? so he needs a way to determine if #1 is on the compression stroke or exhaust stroke when it's at it's highest point in the rotation..and I don't have an answer for that..there is a way I just don't know it..
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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moffat
Posts: 264
Joined: Thu Aug 05, 2010 2:30 pm
Location: Northwich United Kingdom
Motorcycle: 1982 GL1100
Interstate

Re: GL1100 Timing Belt Issue

Postby moffat » Sun Feb 23, 2014 1:16 am

Follow the procedure as per the manual and what ever you do make sure the valves and the pistons do not collide. I always follow the manual carefully and with the sparking plugs out turn the engine over by HAND using a spanner to ensure nothing is touching. If the valves and the piston collide they will bend even if you only use the starter motor to turn the engine over.

PRACTIKALGUY
Posts: 70
Joined: Mon May 13, 2013 12:45 am
Location: MADISON, WI
Motorcycle: 1983 GL1100A Aspencade

Re: GL1100 Timing Belt Issue

Postby PRACTIKALGUY » Fri Feb 28, 2014 10:06 am

Thanks for everyone's help, the cycle is running fine. As it turned out, my initial assumption was right: I knew the left pulley was dead on or 180 out and the right cam was loosened. I rotated the engine until I saw the #2 intake valve open and close, then looked thru the port until I was at T1. I then knew that the #2 cyl. was at TDC and the "up" on the pulley should be down; by chance, it was. I then turned the right pulley down, tightened the cam and put the belt on (the right one is easier anyway with the "up" down). Rotated the engine a few times by hand, rechecked all the marks, put it back together, and it purrs. Now it just need to warm up in Wisconsin!




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