Gl1200 valve train issue


Information and questions on GL1200 Goldwings (1984-1987)
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Sshough01
Posts: 15
Joined: Tue Mar 22, 2016 9:17 pm
Location: Houston, tx
Motorcycle: 1986 gl1200 interstate

Gl1200 valve train issue

Postby Sshough01 » Thu Mar 24, 2016 5:43 pm



I just got a 1986 gold wing interstate. Ran well when parked in a warehouse 6 years ago so engine was stuck. I have soaked cylinders in diesel and got freed up. Now to back up a little, I pulled timing belt off one at a time because I wanted to spin each component individually as I really want to avoid an overhaul. Left side cam rotates and valves open and close good. Right side rotates a little over 270 degrees but one valve appears stuck closed. With that belt off I got the crank roasting enough to spin everything with the starter and have oil pumping to valve train. Suggestions why I can rotate right side cam? I am afraid to put to much pressure since I really don't want to break anything. I have only put socket on timing gear bolt at this point.

Thanks, Sanford



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ct1500
Posts: 813
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
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Re: Gl1200 valve train issue

Postby ct1500 » Thu Mar 24, 2016 6:56 pm

You never rotate the crankshaft or camshafts with belt(s) removed and out of time.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

Sshough01
Posts: 15
Joined: Tue Mar 22, 2016 9:17 pm
Location: Houston, tx
Motorcycle: 1986 gl1200 interstate

Re: Gl1200 valve train issue

Postby Sshough01 » Thu Mar 24, 2016 9:33 pm

Understood which is why I only removed on belt at a time. I also realize prior to starting it I will put new belts on and locate timing marks and get it in time. All plugs are out as well since my valve train wasn't in sync. There were several parts stuck inside this motor and I am systematically ensuring everything is free and moving as it should. Trying to move it all at once wasn't working. I still have one cam that will only rotate slightly over 270 degrees so trying to figure out what would cause it and possible solutions

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julimike54
Posts: 226
Joined: Sun Feb 01, 2015 12:21 pm
Location: Euless, Texas
Motorcycle: 1986 GL1200A original owner
2016 HD FLTRU

Re: Gl1200 valve train issue

Postby julimike54 » Thu Mar 24, 2016 11:29 pm

Is valve hitting piston? If it's not I guess you need to pull valve covers and try to hand operate each valve, open/close. If nothing need to see if cam journals are holding the cam from turning. May require pulling head as last resort to determine problem. Back to the first question, Is the valve hitting a piston? With the belt off and cam turned without crank turning you WILL hit a valve on a piston. These are zero interference engines! Hence the previous post warning. That is why it is stressed so much about changing timing belts if you don't know the age/mileage. Cams and Crank need to rotate together at all times unless the heads are off the engine.
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Sshough01
Posts: 15
Joined: Tue Mar 22, 2016 9:17 pm
Location: Houston, tx
Motorcycle: 1986 gl1200 interstate

Re: Gl1200 valve train issue

Postby Sshough01 » Thu Mar 24, 2016 11:40 pm

thanks for the info. I did make sure all valves were in the closed position before spinning crankshaft. I would think the valve was hitting the piston but I hand turned the crank several several times to move Pistons in various position but it doesn't change the stoppage point on the cam. What is the best way to manually move the valves?




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