Light Rebuild after 60.000 miles.


Information and questions on GL1100 Goldwings (1980-1983)
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hummel
Posts: 12
Joined: Wed Aug 12, 2015 9:50 am
Location: Denmark
Motorcycle: 1983 Gl1100 Aspencade

Light Rebuild after 60.000 miles.

Postby hummel » Fri Nov 06, 2015 2:51 am



Hello Guys.

I wanna share my project with you. I recently bought a GL1100 and just cleaned/restored the carbs and brakes to make it run, it runs great. :)

Now I Decided that my front end of the engine should be overhauled and as a Complete gasket kit is the cheapest I decided that the heads should be overhauled as well.

The engine have had a little ticking front the left side, I thought it was valve train or a lose belt, but I feared i could be a valve hiting a piston.


I couldn't find any sign of valves hitting piston, one of the belts was a little lose, valves where set about right, and the rockers have a pretty even worn.

I read somewhere that the valves have some kind of coating on them ? My question is how much ? As you see in the pictures the exhaust valves are not so pretty i think, mwhat do you think ? I lapped two of the valves with the coarse, still needs to do the fine stuff, but i'm scared to destroy the coating ??? :?

Otherwise i'm really impressed on how good the inside is, minimal amount of carbon, intake valves are great, pistons are great, even the sleeves are still with cross patern.

Please share your thoughts. :D

Tommy Hummel
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hummel
Posts: 12
Joined: Wed Aug 12, 2015 9:50 am
Location: Denmark
Motorcycle: 1983 Gl1100 Aspencade

Re: Light Rebuild after 60.000 miles.

Postby hummel » Fri Nov 06, 2015 2:52 am

pictures of the inside of my GL1100
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f1xrupr
Posts: 396
Joined: Mon Jan 13, 2014 6:13 am
Location: Triplet Va
Motorcycle: 1980 gl 1100 Std. Vetter

Re: Light Rebuild after 60.000 miles.

Postby f1xrupr » Sat Nov 07, 2015 12:35 pm

I have lapped many valves, and I'm sure some more than I should have, but from the pictures on my smart phone of some of your valves, it looks like there are chunks missing, which would render them shot. In my opinion, if you want to lap a valve that's worth lapping, you don't need to worry about removing to much metal because, when they are tempered (by heating and cooling), it goes deeper than just the surface.
Looks like they were ran with the clearance to tight, and burnt them. Also (in my opinion) it's ok to lap in a used valve from the same type engine.
My exercise bike is a goldwing.

sportsfreaked
Posts: 219
Joined: Fri Mar 13, 2015 7:23 am
Location: Independence, MO
Motorcycle: 1981 Honda Goldwing Interstate GL1100I
1985 Honda Goldwing Limited Edition gl1200

Re: Light Rebuild after 60.000 miles.

Postby sportsfreaked » Sun Nov 08, 2015 11:03 am

I somewhat agree. I would suggest that you just buy new valves. I don't think they should be that much and you have it apart this far you might as well replace them. Your heads look good so just make sure that your clearances are good. If your not sure then you could take the valves and the heads to a machine shop and have them check it. They shouldn't charge to much for it. Just my opinion. Good luck
Thanks to all who answer and help. It is greatly appreciated!
Ed

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Re: Light Rebuild after 60.000 miles.

Postby WingAdmin » Mon Nov 09, 2015 1:59 pm

I don't think those valves are burned, but they are certainly quite worn. You might be able to lap them, but if you do so, enough to get a good seal, you're going to have very little metal left - and that's a recipe for a burned valve. So lap away, but I suspect that if you do, you'll be replacing them in short order anyway.

The seats, from what I could see in the picture, look in reasonably good condition.

hummel
Posts: 12
Joined: Wed Aug 12, 2015 9:50 am
Location: Denmark
Motorcycle: 1983 Gl1100 Aspencade

Re: Light Rebuild after 60.000 miles.

Postby hummel » Tue Nov 17, 2015 2:34 am

Thank you all for the respons.

I think the pictures fool you a bit, after a little lapping of the valves the all look just fine. I already refitted them in the heads and mounted the heads again :) Sorry I don't took a picture of them after I lapped them, but when i first get started, the camera isn't the first thing I remember :D

Best regards

Tommy Hummel

f1xrupr
Posts: 396
Joined: Mon Jan 13, 2014 6:13 am
Location: Triplet Va
Motorcycle: 1980 gl 1100 Std. Vetter

Re: Light Rebuild after 60.000 miles.

Postby f1xrupr » Tue Nov 17, 2015 6:16 am

Glad it worked out for you!...
My exercise bike is a goldwing.

sportsfreaked
Posts: 219
Joined: Fri Mar 13, 2015 7:23 am
Location: Independence, MO
Motorcycle: 1981 Honda Goldwing Interstate GL1100I
1985 Honda Goldwing Limited Edition gl1200

Re: Light Rebuild after 60.000 miles.

Postby sportsfreaked » Tue Nov 17, 2015 10:45 am

Good to hear. Hopefully she'll fire right up and run like a champ.


Thanks to all who answer and help. It is greatly appreciated!
Ed


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