Exhaust too noisy


Information and questions on GL1000 Goldwings (1975-1979)
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grandpa
Posts: 73
Joined: Sat Aug 07, 2010 3:23 pm
Location: Denmark
Motorcycle: 1978 GL1000 Interstate

Exhaust too noisy

Post by grandpa »



Hi.

When I am driving my GL1000 / 78 it is more noisy than other Gold Wing. I have read in Haynes Work Shop manual that 1978-1979 US model has an modified exhaust system. Padge 157 bottom left. It is more like a Harly, and that is the last I want it to sound like.

Does someone out there have a good idea so I can make it sound more like a Gold Wing.


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Fred Camper
Posts: 1339
Joined: Sun Aug 16, 2009 9:15 pm
Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Exhaust too noisy

Post by Fred Camper »

Could be the crushing washers under the cylinder head exhaust ports. If they are over crushed or not present, then it would get more harley like. Could also be the joint between the headers and the mufflers, as even a very small leak there is a significant noise increase source.

The gaskets at the headers are easy to change, they are Felpro 605670 and also fit a 91-95 Nissan 4 cylinders or
a 76-84 Honda 1.3, 1.4, 1.5, 1.6 or 1.8 liter engine.
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grandpa
Posts: 73
Joined: Sat Aug 07, 2010 3:23 pm
Location: Denmark
Motorcycle: 1978 GL1000 Interstate

Re: Exhaust too noisy

Post by grandpa »

Hi
Sorry, but I am not familiar with the word: crushing washers. Is it the same as Spring Washer.
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Fred Camper
Posts: 1339
Joined: Sun Aug 16, 2009 9:15 pm
Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Exhaust too noisy

Post by Fred Camper »

No, they are tubular washers that crush to just the right thickness when you torque down the headers. But over time they can over crush and no longer seal.
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grandpa
Posts: 73
Joined: Sat Aug 07, 2010 3:23 pm
Location: Denmark
Motorcycle: 1978 GL1000 Interstate

Re: Exhaust too noisy

Post by grandpa »

Hi Fred.
I am with. I know that kind of washer but dit'n know the name. Is Crushing washer the correct name or is it a nickname.

Nex weekend when I am back home I will try to see if there is a leak. I will try with soapwater and se if it blowes bubbles.

Thanks for the quick an good information.
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Fred Camper
Posts: 1339
Joined: Sun Aug 16, 2009 9:15 pm
Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Exhaust too noisy

Post by Fred Camper »

I think it is a nickname, it may be called an exhaust gasket but I do not like to use the word gasket as I always think paper or flat stock when I see that word. Good thought on the soap solution, you should be able to see bubbles if that is the issue.
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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: Exhaust too noisy

Post by dingdong »

The term is "crush" washer. It is any washer that is soft and designed to flatten when torqued down.


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