Author Topic: Muffler for 4into1 - 2.5" OD (Read 11343 times)

RebelYankee · « **on:** January 30, 2015, 07:16:06 AM »

Hey guys,

I have a 4into1 with a OD of 2.5". Any ideas what muffler would fit this? It is from my 82 CB650 parts bike.

Thanks,
Jamie

flybox1 · « **Reply #1 on:** January 30, 2015, 07:18:50 AM »

Cone engineering makes 2 slipons with 2.5"ID
a 12" open reverse cone, and an 18" Quiet core. Both are of excellent quality.
coneengineering.com

70CB750 · « **Reply #2 on:** January 30, 2015, 07:19:43 AM »

For instance this one from DCC:

http://www.dimecitycycles.com/12-inch-stainless-steel-shorty-universal-cone-muffler-for-2-1-2-inch-exhaust-pipes.html

Edit: it is the same as flybox posted, just different seller.

flybox1 · « **Reply #3 on:** January 30, 2015, 07:24:27 AM »

Quote from: 70CB750 on January 30, 2015, 07:19:43 AM

For instance this one from DCC:

http://www.dimecitycycles.com/12-inch-stainless-steel-shorty-universal-cone-muffler-for-2-1-2-inch-exhaust-pipes.html

Edit: it is the same as flybox posted, just different seller.

yes, both are mfr'd by cone. I bought mine thru DCC.
here is the 18"
http://www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-exhaust-parts-stainless-steel-reverse-cone-quiet-core-motorcycle-muffler-mc-2500-18-q-ss.html

70CB750 · « **Reply #4 on:** January 30, 2015, 07:26:32 AM »

Me too

Bought a dimpled one for $20 less from the dime section:

http://www.dimecitycycles.com/dime-store-discount-motorcycle-parts-and-gear.html

RebelYankee · « **Reply #5 on:** January 30, 2015, 07:36:57 AM »

Sweet! Thanks for the replies!

evanphi · « **Reply #6 on:** January 30, 2015, 07:53:03 AM »

Another vote for Cone Engineering. I purchased mine directly from them. Great people to deal with on the phone.

Killer Canary · « **Reply #7 on:** January 30, 2015, 03:10:38 PM »

Build your own. Then you can make it whatever size you please.

Chachi · « **Reply #8 on:** January 31, 2015, 07:28:17 PM »

I've been debating both of those cone mufflers. Can anyone enlighten me on the pros/cons of each? 12" open vs. 18" quiet core. I currently have an old mac slip on (most likely, not 100%) on a 750 k3 with 4-1. It runs well with these specs: 657b carbs, 110 main, 40 idle, needle clip 4th from top, float 26mm, air screw 1 turn out. Would rejetting be needed for either of the two cone mufflers?

FunJimmy · « **Reply #9 on:** January 31, 2015, 07:34:14 PM »

Quote from: Chachi on January 31, 2015, 07:28:17 PM

I've been debating both of those cone mufflers. Can anyone enlighten me on the pros/cons of each? 12" open vs. 18" quiet core. I currently have an old mac slip on (most likely, not 100%) on a 750 k3 with 4-1. It runs well with these specs: 657b carbs, 110 main, 40 idle, needle clip 4th from top, float 26mm, air screw 1 turn out. Would rejetting be needed for either of the two cone mufflers?

It would be partly based on your tollerance for loud pipes. The 12" open is very loud, but oh so good. Very free flowing compared to the Quiet Core. There is a good chance you will need to tweak the jetting with either of these mufflers.

DaveBarbier · « **Reply #10 on:** January 31, 2015, 08:47:14 PM »

I have the quiet core from DCC and it's not too loud. I never want a loud bike so I was a little nervous when I started it up. It is slightly louder than the stock 4-4 on my 550. I did have to rejet but mainly because I moved to pods and now to velocity stacks.

---
1978 Honda CB550K

Djfob · « **Reply #11 on:** January 31, 2015, 10:27:40 PM »

I've ran both, the 12" shorty is just too loud for my likings. You'd need to rejet for it, queitcore it runs like a top on stock jet sizes.

I have a stock air box

evanphi · « **Reply #12 on:** February 01, 2015, 10:57:32 AM »

Ditto on the no need for rejetting with the 18" and stock airbox.

I love the sound of mine!

maduncle · « **Reply #13 on:** February 01, 2015, 01:47:46 PM »

I just fitted a Lossa Engineering reverse cone stainless steel shorty muffler with a 2" inlet onto my 4 into 1 collector which had a 2 1/2" outlet.

I needed about 4 inches of pipe between the two so I got an adaptor made up at the local exhaust joint.

Lossa sell the same muffler with a 2 1/2" inlet, I believe it is a Cone Engineering muffler with a Lossa badge.

Sounds good, looks good, got some tuning to do ...

Chachi · « **Reply #14 on:** February 01, 2015, 08:27:43 PM »

So is the consensus that I would probably have to rejet for the 12" open shorty, but not the 18" quiet core? Also, anyone have any pics of which bracket you used on the muffler and how you mounted, etc.?

FunJimmy · « **Reply #15 on:** February 01, 2015, 09:49:02 PM »

Cone Engineering sells weld on mounting tabs.
They work great for hanger brackets.

evanphi · « **Reply #16 on:** February 02, 2015, 06:47:23 AM »

Yep. Get the bracket from CE.

Mine is the three-sided one that looks like the one on the MAC. It hangs from a strap on the passenger footpeg.

Chachi · « **Reply #17 on:** February 02, 2015, 09:32:42 AM »

Can you send a pic of the backside where the bracket is?

evanphi · « **Reply #18 on:** February 02, 2015, 05:54:03 PM »

Parts List: http://www.coneeng.com/pdf/motorcycle/Collector%20Components%20PDF.pdf

And here it is mocked in place on mine. I just rotated the extension to get it in line with the hanging strap, which is now vertical and cut to length. I also put the center stand stop on the other side.

Chachi · « **Reply #19 on:** February 03, 2015, 07:04:45 AM »

Thanks for the pics. Would the center stand stop not work/fit with that bracket in that location?

flybox1 · « **Reply #20 on:** February 03, 2015, 08:29:32 AM »

with stock exhaust gone, the center stand will contact the chain.
I hung a center stand stop off my L-side passenger peg.
Here's how my exhaust was mounted.

Chachi · « **Reply #21 on:** February 03, 2015, 08:47:40 AM »

But will the stand stop work on the right? Mine is on the right with my current Mac slip on which has similar bracket mount as flybox. I have a hanger strap which connects muffler bracket to bolt through right passenger peg mounting hole which also holds stand stop. All on right. I guess if the stand stop works just as well on the left it doesn't matter what side, right?

flybox1 · « **Reply #22 on:** February 03, 2015, 08:51:15 AM »

It does not matter as long as its not resting on the chain.

stewonepot · « **Reply #23 on:** February 03, 2015, 09:31:18 AM »

I had the same problem ,but it dosnt matter which side you do it ! just for looks
Regards Stew
ps pass pegs are strong

evanphi · « **Reply #24 on:** February 04, 2015, 04:51:47 AM »

Yep doesn't matter which side it was on... I just didn't want both on the same peg for looks.

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Author Topic: Muffler for 4into1 - 2.5" OD (Read 11343 times)