GL1000 Exhaust question


Information and questions on GL1000 Goldwings (1975-1979)
Post Reply
racer311
Posts: 4
Joined: Sun Dec 14, 2014 9:39 am
Location: Orlando, Florida
Motorcycle: 1977 GL1000

GL1000 Exhaust question

Post by racer311 »



My wife surprised me for Valentines day with a GL1000, and even though I have several other vintage Hondas, I haven't really had much exposure to the GLs. My question is, why are there 2 holes on the bottom side of each muffler. They don't appear to be screw holes because they aren't tapped, but they do allow quite a bit of exhaust to escape creating a pretty good exhaust leak. If anyone could enlighten me, it would be most appreciated.


User avatar
SnoBrdr
Posts: 784
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

131K Original Owner

Re: GL1000 Exhaust question

Post by SnoBrdr »

racer311 wrote:My wife surprised me for Valentines day with a GL1000, and even though I have several other vintage Hondas, I haven't really had much exposure to the GLs. My question is, why are there 2 holes on the bottom side of each muffler. They don't appear to be screw holes because they aren't tapped, but they do allow quite a bit of exhaust to escape creating a pretty good exhaust leak. If anyone could enlighten me, it would be most appreciated.
Stock mufflers?

Where are the holes.
User avatar
Maz
Posts: 785
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: GL1000 Exhaust question

Post by Maz »

racer311 wrote:My wife surprised me for Valentines day with a GL1000, and even though I have several other vintage Hondas, I haven't really had much exposure to the GLs. My question is, why are there 2 holes on the bottom side of each muffler. They don't appear to be screw holes because they aren't tapped, but they do allow quite a bit of exhaust to escape creating a pretty good exhaust leak. If anyone could enlighten me, it would be most appreciated.
My '75 with a stock exhaust definitely has one hole each side underneath which, allegedly, are drain holes for moisture/condensation. Helps to prevent internal rusting.
Maz
Ironically, Common Sense is the LEAST common of all senses!
User avatar
SnoBrdr
Posts: 784
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

131K Original Owner

Re: GL1000 Exhaust question

Post by SnoBrdr »

Maz wrote:
racer311 wrote:My wife surprised me for Valentines day with a GL1000, and even though I have several other vintage Hondas, I haven't really had much exposure to the GLs. My question is, why are there 2 holes on the bottom side of each muffler. They don't appear to be screw holes because they aren't tapped, but they do allow quite a bit of exhaust to escape creating a pretty good exhaust leak. If anyone could enlighten me, it would be most appreciated.
My '75 with a stock exhaust definitely has one hole each side underneath which, allegedly, are drain holes for moisture/condensation. Helps to prevent internal rusting.
Maz
That's what I'd have thought as my 78 has similar.
racer311
Posts: 4
Joined: Sun Dec 14, 2014 9:39 am
Location: Orlando, Florida
Motorcycle: 1977 GL1000

Re: GL1000 Exhaust question

Post by racer311 »

Yes, they are the stock exhaust. I'm surprised that they allow that much exhaust to escape.
User avatar
SnoBrdr
Posts: 784
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

131K Original Owner

Re: GL1000 Exhaust question

Post by SnoBrdr »

racer311 wrote:Yes, they are the stock exhaust. I'm surprised that they allow that much exhaust to escape.
If the bike was cold and left on the sidestand you'd see a lot of both vapor and oil smoke.


Post Reply