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Author Topic: Exhaust mount problem.  (Read 664 times)

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Offline JetgreenK1

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Exhaust mount problem.
« on: June 26, 2016, 09:11:24 PM »
Hello all,

1971 K0 CB 500 with a 4-1 exhaust. The project bike I bought didn't have any exhaust so I picked this set up off of a friend. However, didn't come with any mounts for the rear portion (where it connects to the frame).  Anyone have a good way of making your own mount? I wanted to use something from online but the shortest length I have found was 6" and I need 3" at the most.  I guess longer is better but just curious if you folks had a good method already proven in the field. Thanks in advance.
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Offline flybox1

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Re: Exhaust mount problem.
« Reply #1 on: June 26, 2016, 09:47:45 PM »
Weld a bracket to the swingarm side of it, and m I unt it to the passenger peg mount hole. 
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

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Offline riffman12

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Re: Exhaust mount problem.
« Reply #2 on: June 26, 2016, 10:02:24 PM »
I have yet to install a rear mount on my carpy pipe

Is it necessary?
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Offline flybox1

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Re: Exhaust mount problem.
« Reply #3 on: June 27, 2016, 09:34:08 AM »
Quote from: riffman12 on June 26, 2016, 10:02:24 PM
I have yet to install a rear mount on my carpy pipe

Is it necessary?
I will just state that the WHOLE weight of the exhaust, bouncing up and down as you ride, is resting/hinging on the exhaust seal and bolts/studs.
This weight is dramatically increased if a longer muffler is added.
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline riverfever

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Re: Exhaust mount problem.
« Reply #4 on: June 27, 2016, 11:00:01 AM »
I just used a piece of 1" aluminum to mount my Motogp exhaust exactly as flybox described. Some use a stout spring instead but I need to pull the header in a bit closer to run that front fender and this worked nicely. I polished the alloy up. It looks nice.
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Offline calj737

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Re: Exhaust mount problem.
« Reply #5 on: June 27, 2016, 11:21:25 AM »
Quote from: riffman12 on June 26, 2016, 10:02:24 PM
I have yet to install a rear mount on my carpy pipe

Is it necessary?
Abso-farking-lutely
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'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline JetgreenK1

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Re: Exhaust mount problem.
« Reply #6 on: June 29, 2016, 03:54:58 PM »
Thanks guys, just have to find something that I can drill out and weld up for a support. Much appreciated.
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Offline BomberMann650

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Re: Exhaust mount problem.
« Reply #7 on: June 29, 2016, 04:22:01 PM »
Quote from: JetgreenK1 on June 29, 2016, 03:54:58 PM
Thanks guys, just have to find something that I can drill out and weld up for a support. Much appreciated.

I went stupid simple hanging my can on bloo.

Galvanized strap, bent around the passenger peg loop.  Covered in rubber innertube and a hole drilled thru&thru to match the mount on her yosh can. Nut & Bolt then done.

One of these days I'll put some of that fancy shrink sleeve on the hanger.

Little straps of metal available at ace hardware!
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