Author Topic: CB550F Exhaust Fix  (Read 1529 times)

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Offline nathanielhartig

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CB550F Exhaust Fix
« on: August 27, 2017, 01:12:50 PM »
I've got a '75 CB550F (see attached photo) with the original Kerker exhaust on it. As you can see from the photo, the upper half of the exhaust has some rust and corrosion on it. Exhaust is in great shape otherwise, but I want to fix the issue simply for aesthetics. Do you guys have any advice on the best way to remove this, and then possibly paint over it to match the clean black of the back portion of the exhaust? (She just survived Hurricane Harvey, so I want to celebrate by cleaning her up a bit). Thanks!

Offline Stev-o

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Re: CB550F Exhaust Fix
« Reply #1 on: August 27, 2017, 02:27:41 PM »
Congrats on surviving the storm, that was a monster. Houston was not so lucky.

I would sandblast the header and then have it ceramic coated, should look great [or paint, but that wont hold up nearly as well]
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline TwoTired

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Re: CB550F Exhaust Fix
« Reply #2 on: August 27, 2017, 05:18:14 PM »
To be clear, Honda used their own exhaust on the original.
Kerker is an aftermarket replacement.

Cheers,
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Stev-o

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Re: CB550F Exhaust Fix
« Reply #3 on: August 28, 2017, 07:21:13 AM »
To be clear, Honda used their own exhaust on the original.
Kerker is an aftermarket replacement.


If we want to get technical, Honda used Sankei for the exhaust on the 550F.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline TwoTired

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Re: CB550F Exhaust Fix
« Reply #4 on: August 28, 2017, 07:50:55 AM »
It's a tech forum.

Did Sankei make exhausts for anyone besides Honda?

Could you buy them direct from builder?

Cheers,
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Stev-o

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Re: CB550F Exhaust Fix
« Reply #5 on: August 28, 2017, 08:05:29 AM »
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline BomberMann650

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Re: CB550F Exhaust Fix
« Reply #6 on: August 28, 2017, 10:26:48 AM »
+1 sandblast and ceramic coat

Offline jonda500

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Re: CB550F Exhaust Fix
« Reply #7 on: August 28, 2017, 03:12:44 PM »
Suzuki Savage's also have sankei mufflers...
Any clues how one would contact Sankei??
John
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline Stev-o

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Re: CB550F Exhaust Fix
« Reply #8 on: August 28, 2017, 03:22:58 PM »
Suzuki Savage's also have sankei mufflers...
Any clues how one would contact Sankei??
John

Hey John....their website has a list of contacts. 

Mind if I ask what you want to ask them?

http://www.sankei-gk.co.jp/global/company_03.html
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline jonda500

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Re: CB550F Exhaust Fix
« Reply #9 on: August 28, 2017, 03:32:01 PM »
Suzuki Savage's also have sankei mufflers...
Any clues how one would contact Sankei??
John

Hey John....their website has a list of contacts. 

Mind if I ask what you want to ask them?

http://www.sankei-gk.co.jp/global/company_03.html

When I'm not so damn broke, I'd love to ask them if they can/would still make 550F mufflers to order!
John
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline Stev-o

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Re: CB550F Exhaust Fix
« Reply #10 on: August 28, 2017, 04:55:49 PM »
Suzuki Savage's also have sankei mufflers...
Any clues how one would contact Sankei??
John

Hey John....their website has a list of contacts. 

Mind if I ask what you want to ask them?

http://www.sankei-gk.co.jp/global/company_03.html

When I'm not so damn broke, I'd love to ask them if they can/would still make 550F mufflers to order!
John

Good luck with that one!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline TwoTired

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Re: CB550F Exhaust Fix
« Reply #11 on: August 28, 2017, 08:02:29 PM »

When I'm not so damn broke, I'd love to ask them if they can/would still make 550F mufflers to order!
John
+1
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline RAFster122s

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Re: CB550F Exhaust Fix
« Reply #12 on: August 29, 2017, 01:03:00 AM »
If the tooling is not long ago scrapped it would need a pretty good capital outlay to refurbish the tooling to be able to turn out excellent examples.

The last batch of one of the 750 Honda pipe runs had chrome issues with lots of returns.  Is that a function of flawed chroming process or possibly an issue with materials or prep before chrome?
David- back in the desert SW!

Offline mj1176

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Re: CB550F Exhaust Fix
« Reply #13 on: August 30, 2017, 08:00:50 PM »
OP, did you buy this from a guy named Riley? Might have gone by Tom? If so this is my old roommate's bike, I remember quite a bit about it and helped him paint it that blue color :) I can also tell by the shaved down seat, and the fact that it has that original Kerker. Feel free to let me know if you have any questions. Pretty sure I still have pictures of that bike in my living room, haha. So glad it survived harvey, and glad we didn't get hit too hard in Austin.