New (well sorta) mufflers


Information and questions on GL1100 Goldwings (1980-1983)
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aznyaz
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New (well sorta) mufflers

Postby aznyaz » Sun Dec 01, 2013 10:44 am



I recently purchased a solid set of stock mufflers for my 81 GL and was wondering if there are any things I need to expect when installing installing them, or is it pretty straight forward as far as removing the existing ones and installing the new.



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RBGERSON
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had every year from 75 to 83

Re: New (well sorta) mufflers

Postby RBGERSON » Mon Dec 02, 2013 7:55 am

No issues..drop the old ones and put the new ones in..do replace the copper rings in the heads..they may be hard to see but they are up there or should be. If I remember correctly there is a small notch in the head at each port so you can pry the ring out.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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aznyaz
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Re: New (well sorta) mufflers

Postby aznyaz » Mon Dec 02, 2013 11:25 am

Thanks Roger.;^)....

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wingit11
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Motorcycle: 1983 GL1100A Aspencade
1990 GL1500SE/California Sidecar Friendship III

Re: New (well sorta) mufflers

Postby wingit11 » Mon Dec 02, 2013 2:37 pm

Before you try to remove the old pipes, (who knows if or when they were last removed) spray the studs liberally with penetrating oil. Let sit for a while then try to loosen the nuts off. Be careful and don't use too much force and break the stud off. If it does not come reasonably easy, spray some more penetrating oil. Try again.

When you install the new pipes, make sure you put in new exhaust gaskets. They are not expensive and well worth the cost to not have to worry about exhaust leaks. Lift the replacement pipes into place and put the rear mounting bolts in as you guide the front onto the studs. Do not tighten the rear mounting bolts till you have the front bolts tightened. Snug up the exhaust header bolts not too tight making sure you get them as even as possible. Then trying to keep it even, tighten the nuts. You do not need too much torque. Probably about 7 to 10 ft/lb would be enough. Paying attention to this will greatly reduce the chances of exhaust gasket leak. Then don't forget to tighten the rear mounting bolts.

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aznyaz
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Re: New (well sorta) mufflers

Postby aznyaz » Mon Dec 02, 2013 2:46 pm

Thanks for all the pointers. I was definitely planning on hitting the mounting nuts and studs with some PB Blaster. Good advice, too on getting the flanges on the studs then onto the rear mounts. I think the final torque value on the header nuts is 13 ft. lbs.

MJ

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80-GL100-INT
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Motorcycle: 1980 GL1100I Interstate (current)
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1981 CB 750 Custom
1976 CB 750 Super Sport (punched to 900)
1986 Kawasaki 440 LTD
1974 Suzuki 550
1986 Kawasaki Ninja 600 (First Street Bike-way back in '88)
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Re: New (well sorta) mufflers

Postby 80-GL100-INT » Mon Dec 02, 2013 2:53 pm

I am a firm believer in "ANTI-SEIZE", especially on any nut or bolt that takes a lot of heat. A little dab on the stud before you install the nut will make it much easier to remove in the future.
If "WE THE PEOPLE" don't defend our rights...Who will?
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wingit11
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Motorcycle: 1983 GL1100A Aspencade
1990 GL1500SE/California Sidecar Friendship III

Re: New (well sorta) mufflers

Postby wingit11 » Mon Dec 02, 2013 2:57 pm

80-GL100-INT wrote:I am a firm believer in "ANTI-SEIZE", especially on any nut or bolt that takes a lot of heat. A little dab on the stud before you install the nut will make it much easier to remove in the future.



Absolutely right on the Anti-Seize. Just make sure it is good for High Temperature.

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aznyaz
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Re: New (well sorta) mufflers

Postby aznyaz » Mon Dec 02, 2013 3:04 pm

I've used anti-seize paste on my Jeep spark plugs. It seems like this could handle the header studs as well. (footnote: I have not used any anti-seize paste on my GL plugs for fear of messing something up internally. Should I consider using it? I have not had any trouble removing my plugs on the GL)

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80-GL100-INT
Posts: 162
Joined: Sun Mar 17, 2013 8:53 pm
Location: Bedford, In.
Motorcycle: 1980 GL1100I Interstate (current)
Previously Owned:
1981 CB 750 Custom
1976 CB 750 Super Sport (punched to 900)
1986 Kawasaki 440 LTD
1974 Suzuki 550
1986 Kawasaki Ninja 600 (First Street Bike-way back in '88)
Contact:

Re: New (well sorta) mufflers

Postby 80-GL100-INT » Mon Dec 02, 2013 3:12 pm

I used a dab on mine just because of the moisture trap that they set in. I cleaned it all out and opened the drain holes, but I still used it as another precaution method...JMHO.

Even used on all of the carb screws as they had a little corrosion on them.
Last edited by 80-GL100-INT on Mon Dec 02, 2013 3:15 pm, edited 1 time in total.
If "WE THE PEOPLE" don't defend our rights...Who will?
"Government's first duty is protect the people, not run their lives."...Ronald Reagan

http://www.powdercoat.tk/

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wingit11
Posts: 65
Joined: Sun Jul 19, 2009 3:59 pm
Location: Lethbridge, Alberta, Canada
Motorcycle: 1983 GL1100A Aspencade
1990 GL1500SE/California Sidecar Friendship III

Re: New (well sorta) mufflers

Postby wingit11 » Mon Dec 02, 2013 3:15 pm

aznyaz wrote:I've used anti-seize paste on my Jeep spark plugs. It seems like this could handle the header studs as well. (footnote: I have not used any anti-seize paste on my GL plugs for fear of messing something up internally. Should I consider using it? I have not had any trouble removing my plugs on the GL)


Just need a little. I put in on my spark plugs, then wipe off any excess. A little bit goes a long way.

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aznyaz
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Re: New (well sorta) mufflers

Postby aznyaz » Tue Dec 10, 2013 7:26 am

Well, I got all of my hardware together and installed the new (used) mufflers and am thoroughly thrilled at the reduced sound levels. I can't tell for sure if there is any improvement in performance but it feels smoother.

I had one problem installing the left muffler and I'm not quite sure if it was from some unseen issue with my bike, but the muffler mount hole on the bracket didn't line up just right for the bolt to go through so I had to elongate the hole by about a 1/16". The old muffler had bolts that moved in a slot on the muffler, so that one fit just fine but there is little play in OEM part. Another thing which did not seem too major was that one of the exhaust studs turned out of the head. I did not want to get involved in trying to free up the nut from the stud for fear of chewing the thing up so I just torqued the thing on as if it were a bolt.

Everything works and sounds great, and the mufflers are used enough to make them look like they came with the bike.

MJ

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wingit11
Posts: 65
Joined: Sun Jul 19, 2009 3:59 pm
Location: Lethbridge, Alberta, Canada
Motorcycle: 1983 GL1100A Aspencade
1990 GL1500SE/California Sidecar Friendship III

Re: New (well sorta) mufflers

Postby wingit11 » Tue Dec 10, 2013 7:42 am

Good to see you got it done, and with minimal problems. Enjoy the new (quiet) pipes.




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