Muffler Inserts Harley Exhaust Discuss Muffler Inserts in the Harley Tech & Harley How-to forums; Anyone know where we can buy those old fashioned muffler insert baffles we used to call can openers? I like the look of an exhaust I have on one of ...

[Buzz Kanter]

Anyone know where we can buy those old fashioned muffler insert baffles we used to call can openers?

I like the look of an exhaust I have on one of my bikes but it is way too loud. So I thought I'd insert a set of those baffles.

Someone thought perhaps J C Whitney.

Other options?

[Wrightturn]

If you mean the removable pipe we could take out and cut off J&P has them.

[evoKENevo]

Hey,Buzz
You might want to check out the ad from Big City Thunder on page 109 of AIM's July '08 issue. I don't think it's out on the newstands yet but,if you ask around...

[47knuck]

Anyone remember the Snuff R Nuts we used to put in old Hondas and Triumphs?

[evoKENevo]

Oh,yeah..."Snuff-R-Nuts"...kind of like a big-washer you could turn 90* to open/close the end of straight pipes. Never used them myself (Triumph with TT pipes) and NOTHING could make a Honda (two OR four cyl.) sound good with straight pipes...or ANY pipes on those twins in MY mind,anyhow !!!

Now-a-days,though (since you bring them up) I've got to wonder if maybe they might have done SOME good for straight pipes in the OPEN position...like "splitters" ???

[frisco-rigid]

Big City thunder baffles are just simply the old bolt and washer or eye-bolt trick..
I experimented with them a few years ago and lost power..
If your exhaust system is horribly in-efficient they may help cuz they are only a band-aid.. Just like the bolt-washer-snuff is..
If the system is fairly OK power loss is very possible..

As you know, with the bolt-washer trick you can simply loosen and turn the washer/eye-bolt and Wal-lah it becomes a Snuff..
Maybe BCTB now makes tunables but spending $80 on them is silly when you can do the bolt-washer-snuffs for like 3 bucks..

Ken-- when I've experimented with the bolt-washer-snuff trick in open exhaust I always got better power with the washer fully face-on 90* to the pulse..

[evoKENevo]

frisco

Hmmmm...I would'nt have THUNK that...then again you mentioned "experimenting" with the bolt-washer-snuff" and not spending $$ on stuff you can MAKE for $ so I assume (wrongly?) that you're talking about various size washers etc...and not the over-the-counter "snuff-R-nuts",that would'nt SEEM to be able to pass much of anything out the end...and were "marketed" back in the day as primarily for avoiding excessive noise tickets,as I remember. That and hey...the latter is all that Buzz seemed to be interested in..noting reference to the "can-opener" baffles that I never messed with either...or,actually understood much about ANY of at the time.

[frisco-rigid]

Yes thats correct Ken

Washers of diff OD and ID welded on 1/4" bolts,, turned to present a smaller face to the pulse and of course full face on.. The Eye-bolt method is less variable cuz the "eye" itself is only one size according to the bolt size..

I tried the BCTB's in various ways, to their recommendations,, and ways I thought up..

I can send you photos if you want..

frisco-rigid@mchsi.com

It's been my experience that proper exhaust is waaay more efficient than band-aids like the bolt/washer trick etc etc..

BTW, a straight thru bolt, (all-thread or a very long bolt) also works kinda sorta in the same manner.. A bud turned me on to that one and then of course I had to expand on it too..

[evoKENevo]

Yo,frisco

Check YOUR email...my address coming to you...send whatever/whenever !!!

[frisco-rigid]

Aah heck, I thought I'd try to figure out how to post a photo and by golly I think I did it..
I sent these to evoKen..

Photo 1 shows a bolt/washer in a 1.750 straight pipe, photo 2 shows it turned for so-called "tuning"..

The rest show how simple the BCTB are.. A washer of desired size welded to a bolt.. 2 nuts and washers and Wah-lah you have a BCTB.. Then...
A couple exhaust adapters from the Auto Parts store.. Prep them, weld them then install the "trick"..
You don't need the second adapter,, I don't know why BCTB fabs it that way.. With just one adapter you get that neck-down, I used them that way too,, makes no diff..
There's just no reason to make them either, cuz it's just plain and simply the bolt/washer trick that can be installed directly in the pipe..
What a hassel posting these photos---never again..
So now I find I gotta split the photos in 2 posts, jeeeze..