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Author Topic: 77 550K Stock exhaust on 75 550K  (Read 1394 times)

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SBIII

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77 550K Stock exhaust on 75 550K
« on: July 19, 2005, 12:13:06 PM »
Wondering if the 77 or 78 stock exhaust from a 550K would fit on a on a 75 or 76 550K. Found a nice set @ a bike junk yard.
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Offline frostypuck

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Re: 77 550K Stock exhaust on 75 550K
« Reply #1 on: July 19, 2005, 01:04:08 PM »
Many things are different between the pre- and post- '77 550's, but I think you'll be ok with an exhaust transplant.
Good luck,
Chris in Boston
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Boston, MA, USA

Offline TwoTired

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Re: 77 550K Stock exhaust on 75 550K
« Reply #2 on: July 19, 2005, 02:17:06 PM »
The head pipes will interface in the same way.  So, no problems there.
But, I think the muffler hanger positions are somewhat different. As were the muffler hangar brackets.
Something else to watch for is the swingarm bumper position and muffler relief indentations.
The 77 used completely different carbs from the 75, so there may even be some jetting issues.

If you are still interested, I might be convinced to go out back and take some measurements on the two bikes.
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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.

SBIII

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Re: 77 550K Stock exhaust on 75 550K
« Reply #3 on: July 24, 2005, 07:29:24 AM »
Hey guys, thanks for the info. It sounds like I probably should take some measurements before hand.
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