Timing


Information and questions on GL1100 Goldwings (1980-1983)
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Pacificbuoy
Posts: 18
Joined: Sat Jul 04, 2015 9:42 pm
Location: Smithers, BC, Canada
Motorcycle: 1983 gl650i Silverwing (sold)
1981 gl1100i Goldwing

Timing

Post by Pacificbuoy »



I recently changed the belts on my 81 gl1100 the cam was not lined up properly on the 1and 3 side. After lining up the cam as per specs and setting the valves, the bike sounds way better but it is popping on the 1 and 3 side. Is this a carb problem?


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Pacificbuoy
Posts: 18
Joined: Sat Jul 04, 2015 9:42 pm
Location: Smithers, BC, Canada
Motorcycle: 1983 gl650i Silverwing (sold)
1981 gl1100i Goldwing

Re: Timing

Post by Pacificbuoy »

This is how I found the timing with the old belt still in place. I aligned the marks and put the new belts on.
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Cam sprocket before I aligned the marks and put the new belt on.
Cam sprocket before I aligned the marks and put the new belt on.

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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: Timing

Post by dingdong »

Uh oh! With the mark that far off you, more than likely, have 1 or 2 bent valves.
I see an idler pulley spring that looks to be stretched also.
indianakid
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Location: United States
Motorcycle: 83 GL1100 I

Re: Timing

Post by indianakid »

OK...... You stated that "This is how I found the timing with the old belt still in place." but in the picture I do not see a belt installed. What I see in the picture is typical of the pulley / cam rotating (due to valve spring force) when the belt is removed. There are several how to's with various ways to keep this from happening. If it does happen the pulley can be rotated back (counter clock wise. if the bolt is used be sure it does not loosen) to the alignment mark and the belt installed.
So....... My assumption is that the motor was properly timed and when you removed the belt the cam rotated to this position. And with the crank still at TDC the cam was rotated CCW to the alignment mark and new belt installed. If this is what happened you are most likely OK. However if that is how the cam was with the belt installed and the engine was ran .......... well I am sorry for you and your bike. And yes the tension spring has been over stretched.
indianakid
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Location: United States
Motorcycle: 83 GL1100 I

Re: Timing

Post by indianakid »

ps: do a compression test. if there is a bent valve you will know right away.
indianakid
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Motorcycle: 83 GL1100 I

Re: Timing

Post by indianakid »

Hi Pacificbuoy,

Have you had a chance to work on your bike ??? Any updates ?
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Johnyy Smoke
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Motorcycle: 1980 GL1100
Vetter. "Its like Deja Vu all over again".

Re: Timing

Post by Johnyy Smoke »

Regardless of any other advice from a somewhat dubious poster, Do a carb sync, it can make a world of difference. If it comes down to this, pull the heads and check piston and valves. If valves are bent, refurb the head or buy a couple off e-bay. A bit of a learning curve but not all that hard. I redid mine for $100. Valves are not hard to replace, pistons are. Chances are your valves are affected. Only way to tell is to pull the heads. Keep us informed. Regards, Johnny
indianakid
Posts: 255
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Location: United States
Motorcycle: 83 GL1100 I

Re: Timing

Post by indianakid »

Ah, GEEEZZZZ. It would seem that someone didn’t like my post.

“Regardless of any other advice from a somewhat dubious poster”

Really Johnny !?! Or are you going to pin this on your step Son again ????
ps: if I misunderstood your comment I apologies in advance.
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Johnyy Smoke
Posts: 722
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Location: Se Minnesota
Motorcycle: 1980 GL1100
Vetter. "Its like Deja Vu all over again".

Re: Timing

Post by Johnyy Smoke »

I will let your post describe your personality, and lack of insight, or intelligence. Myself, I am done with this post. Regards, Johnny
indianakid
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Joined: Sun Sep 26, 2010 5:28 pm
Location: United States
Motorcycle: 83 GL1100 I

Re: Timing

Post by indianakid »

Thank you !!!........... and the same to you.
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Pacificbuoy
Posts: 18
Joined: Sat Jul 04, 2015 9:42 pm
Location: Smithers, BC, Canada
Motorcycle: 1983 gl650i Silverwing (sold)
1981 gl1100i Goldwing

Re: Timing

Post by Pacificbuoy »

Thanks a everyone for the input. I replaced the belts and glides making sure I set the timing as close as possible. I did the valves, got a new starter installed, and also synchronized the carbs. It’s like a brand new bike.
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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: Timing

Post by dingdong »

Thats good! Glad you got her running.


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