Silencer opinions please

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calbigbird

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I am going to replace the silencers on my MK III. The bike has earlier head pipes without the balance pipe. One of my mufflers is rusting out, so it is time to eplace the silencers. I am looking at parts from Old Britts. They handle Pea Shooters from Andover, Toga, Emgo. I know the Andover part costs considerably more than the Emgo, but is the part that much better? Does anyone have opinions any or all of these brands?

I know I just opened a can of worms, but thanks for the input.
 
calbigbird said:
I am going to replace the silencers on my MK III. The bike has earlier head pipes without the balance pipe. One of my mufflers is rusting out, so it is time to eplace the silencers. I am looking at parts from Old Britts. They handle Pea Shooters from Andover, Toga, Emgo. I know the Andover part costs considerably more than the Emgo, but is the part that much better? Does anyone have opinions any or all of these brands?

I know I just opened a can of worms, but thanks for the input.
Click to expand...

make sure they'll fit first- the MKIII has different muffler mounting brackets that will not work for earlier peashooters -

http://www.oldbritts.com/ob_start.html
 
I read the topic line and thought you were asking about guns. Guns I know, Mufflers, not so much.
I am still running the original Dunstall decibals and one of the baffles is rattling. I'll be watching this thread for the learned responses.
Not sure price is what you should be looking at first.
You get what you pay for.
 
http://www.totalbikebits.com/ ( WASSELL )

This outfit do long tapered ' mufflers ' :lol: that came in 1 1/2 , 1 5/8 & 1 34 bore fit . Were heavier than the Average job , so durable. Removeable baffles .
Not that you needed to . . . :lol: would be 16 G steel . 14 G mounts. Have a 1/4 radius return at outlet . Cant stand the ones with the alloy end cones .
 
Matt Spencer said:
http://www.totalbikebits.com/ ( WASSELL )

This outfit do long tapered ' mufflers ' :lol: that came in 1 1/2 , 1 5/8 & 1 34 bore fit . Were heavier than the Average job , so durable. Removeable baffles .
Not that you needed to . . . :lol: would be 16 G steel . 14 G mounts. Have a 1/4 radius return at outlet . Cant stand the ones with the alloy end cones .
Click to expand...

well that may be fine to ole money bags matt - but with the $ of shipping 'em to calif - yikes!
 
Thanks for the reminder Mike, but my bike already has pea shooters installed. It was that way when I got it. It is just time to replace the old mufflers since they are starting to rust.
 
My recommendation is spend the extra money and save yourself some grief! I did not have good luck with the Emgo mufflers. 5 out of 6 cracked where the pencil is pointing in the photo.This all happened in less than 4000 miles total. Each set was replaced for 1/2 price and with recommendations that I followed. (Replace iso rubbers, shim at .005" instead of .010" ,make sure there is no binding or tension, etc.) I finally threw in the towel , called it a total loss, and purchased some seamless peashooters from Commando Specialties and now have over 4000 miles on them.I just don't think that the Emgos are strong enough to take the movement that is inherent on a Commando.

Silencer opinions please


While it doesn't show well in the picture, both of these are cracked. Once cracked, vibration increases, and the crack widens rapidly. I plan to put them on my lawn tractor some day.

Mike Wolf
 
I got a set of Andover peashooters from Old Britts last year. Nice finish, fit, and no cracks after a few thousand miles. Not too loud.
 
I think Walridge carries the Wassal's at a fair price. That's what I have on my S. I think they are a bit raspy at high speed though. They have a real nice finish on them, the welds are ground down and look seamless. But I haven't had to mess with the carburation like some other silencers I've had.

Dave
69S
 
mw21837 said:
purchased some seamless peashooters from Commando Specialties and now have over 4000 miles on them.
Click to expand...

My Emgo's had less than 4000 miles before deveoping cracks around the "male" fitting into the header pipe. Replaced with the seamless Commando Specialties peashooters....great price, and awesome sound. Also, I'm a bit of a "shine" OCD type and these have stayed perfect with an occasional swipe of Turtle Wax chrome cleaner (much, much better than the Maquiar's).
 
Just worn out a set of Toga seamless at the end of last year and have another set ready to install. I like these...nice straight through glass pacs.
 
I had a 2 to 1 Hooker glass pack and it messed up the carburation. Plus it scraped on the ground and was hard to mount.

Dave
69S
 
Ha, I thought it was just me with the Emigo muffler cracking, went thru 3 sets and looked for alternatives. I have come up with full stainless peashooters from Empco in the US, they sell off factory seconds on eBay, check all norton muffler listings and you will find them on eBay.
All my local Commando mates have them now, they give a really deep sound, everyone that hears them love them. Also they taper down really thin were they join to the header pipe, so extra kick start clearance over the bell type. Stainless so any stains polish out.

Cheers Richard
 
Wassell is normally identical to EMGO.
Look at what your silencers look like inside- they need the "flutes" in the centre tube to give the correct performance-enhancing backpressure. Most pirate silencers have just a tube with holes in it. Loud and no power.
 
T.H said:
stockie2 said:
Ha, I thought it was just me with the Emigo muffler cracking

Not just you Richard!

Tim
Click to expand...
Click to expand...


Tim, how about a picture of your yellow Fastback, every one seems to have green or red ones these days...sold my yellow 1970 one in early '76, and like most have regretted it ever since...
 
I share the opinion, without any dynamometer data, that the OEM louvered baffle design sounds better and makes better power.

I also think, again with no data, that the inner diameter of the muffler natters, some are smaller and seemingly more restrictive.
 
About a decade ago a fella on Brit Iron list missed the chirping run off sound of Norton factory reverse cones and did investigation of all the inside styles out there. The factory baffles were crescent shaped louvers following shape of ID, not straight flaps or V shaped as available nowaddays. Its not back pressure restriction that helps low end its the sonic reflection waves of low pressure/density hitting exhaust valve just as intake valve opens with exhaust not yet sealed. Any change in pipe dia or volume by step up or by wall taper causes a sonic reflection to help or hurt in some rpm zones. The tapper of peashooter and megaphones is to broaden this sweet zone. BTW until you've wrapped headers its hard to tell how much of the ringing pinging sounds at front of engine is do to header walls not engine parts. I like the full narrow tapper pipes over the blunt ending emgo fracture style.
 
Amendment on my stainless muffler (silencer) option. The brand name is Epco and they are on eBay for $270 a pair. Look under Norton Commando Stainless. These are beautifully made and sound superb, deep baratone note.

Cheers Richard
 
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