Author Topic: 1977 CB 550F muffler question  (Read 828 times)

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Offline 2mnyshp

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1977 CB 550F muffler question
« on: May 19, 2016, 02:12:00 AM »
Hi there

I'd like to swap my stock CB 550F muffler for something a bit louder. The 4 into 1 stock pipes are installed on my bike and the header outlet is 60 mm in diameter (2,36") which is pretty wide for a lot of aftermarket mufflers. (Picture of header outlet: http://i.imgur.com/Kd73A5I.jpg Picture of bike: http://i.imgur.com/cbTIjqc.jpg)

I'm interested in getting this Dime City Cycles muffler: http://goo.gl/3NRDTa

Has anyone here installed a muffler like this on the stock 4-1 header? Is 2 1/2" enough to fit over the header outlet? I don't really want to alter anything in the bike because I want to be able to just swap exhausts again (for inspection).

Thanks!

Offline Tews19

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Re: 1977 CB 550F muffler question
« Reply #1 on: May 19, 2016, 05:26:29 AM »
Keep the header. Go to cone engineering and buy the 12" megaphone.  You won't be disappointed.
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Tews19

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Re: 1977 CB 550F muffler question
« Reply #2 on: May 19, 2016, 05:28:15 AM »
Lol, I didn't click your links. Cone engineering make the one you have shown from DCC. They simply mark it up.
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline strynboen

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Re: 1977 CB 550F muffler question
« Reply #3 on: May 19, 2016, 05:31:30 AM »
red baron bike...nice done..
i kan not speak english/but trying!!
http://forums.sohc4.net/index.php?topic=60973.0
http://forums.sohc4.net/index.php?topic=144758.0
i hate all this v-w.... vords

Offline evanphi

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Re: 1977 CB 550F muffler question
« Reply #4 on: May 19, 2016, 05:46:29 AM »
Yep. Cone Engineering makes that muffler, and DCC just sells it for more money. :P

http://www.coneeng.com/

1-714-828-3580
--Evan

1975 CB750K "Rhonda"
Delkevic Stainless 4-1 Header, Cone Engineering 18" Quiet Core Reverse Cone, K&N Filter in Drilled Airbox
K5 Crankcase/Frame, K4 Head and Cylinders, K1 Carbs (42;120;1 Turn)

She's a mix-matched (former) basket case, but she's mine.

CB750 Shop Manual (all years), searchable text PDF
Calculating the correct input circumference for digital speedometers connected to the original speedometer drive

Offline BomberMann650

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Re: 1977 CB 550F muffler question
« Reply #5 on: May 19, 2016, 10:48:03 AM »
Vintage old stock yoshimura stub can ftw.  It just howls, I love it.

Finally got to hear it echo in the canyon outside Carbonado a few weeks back.  It sounded like a pack of wolves!

Offline 2mnyshp

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Re: 1977 CB 550F muffler question
« Reply #6 on: May 20, 2016, 02:34:24 AM »
Lol, I didn't click your links. Cone engineering make the one you have shown from DCC. They simply mark it up.

Thanks for the info! I guess the 2 1/2 fits well?

Cheers!

Offline evanphi

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Re: 1977 CB 550F muffler question
« Reply #7 on: May 20, 2016, 05:17:56 AM »
Measure your collector's outlet size, then get the appropriate cone direct from CE. Be sure to buy a bracket, too.
--Evan

1975 CB750K "Rhonda"
Delkevic Stainless 4-1 Header, Cone Engineering 18" Quiet Core Reverse Cone, K&N Filter in Drilled Airbox
K5 Crankcase/Frame, K4 Head and Cylinders, K1 Carbs (42;120;1 Turn)

She's a mix-matched (former) basket case, but she's mine.

CB750 Shop Manual (all years), searchable text PDF
Calculating the correct input circumference for digital speedometers connected to the original speedometer drive