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BSA loud mufflers? (Plus a little extra hp) #707636
09/07/17 8:39 pm
09/07/17 8:39 pm
Joined: Jun 2017
Posts: 189
Canada
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Alexp Offline OP
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Canada
Looking for an upgrade to my BSA B25. I want to add a little extra HP and if it's loud, that's fine as well, as I find the stock muffler is a bit too quiet to be safe. I'm open to anything! Located in Canada but no problems shipping overseas if I have to! Thanks!!

alexP

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Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #707655
09/08/17 1:05 am
09/08/17 1:05 am
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Posts: 232
Oahu Hawaii USA
Roger Gulledge Offline
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Alexp...you might get more of a response if you post this on the BSA page or British Motorcycles in General.


Roger G
70 Thunderbolt
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #707677
09/08/17 11:23 am
09/08/17 11:23 am
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Scotland
kommando Online content
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Scotland
Norton Commando peashooter silencers fit as pipe diameter is the same, not sure if they add power but they sound good and not overly load and are straight through, the bike seems to pick up better when the revs rise but this is always deceptive as it could be its worse lower down than before. You just need to fabricate a bracket to go from the 2 bolt holes on the peashooter to the current plate near the passenger footpeg.

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #707819
09/09/17 1:17 pm
09/09/17 1:17 pm
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Canada
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Alexp Offline OP
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Thank you Roger and Kommando for getting back to me! Kommando, I have seen those pipes on BSAs before, and am going to order one and give it a shot! Thanks!!

Roger- I was under the impression that any modding be out here. Didn't want the BSA boys throwing eggs at me! smile

Alex

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #709880
09/28/17 7:54 am
09/28/17 7:54 am
Joined: May 2013
Posts: 5,471
West Yorkshire
Allan Gill Online happy

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Which silencer have you got fitted now? the shorter (A10/A65 esk styled one) or the longer ugly (IMO) cigar shaped silencer? the shorter one will work quite well compared to the later cigar type.

Alternately, If you can get your hands on an original dunstall mega (the pattern ones don't seem to be of the same quality) shorten the downpipe a little then you will alter the performance characteristics....

Alternately.... fit a bigger motor wink

http://www.britbike.com/forums/ubbthreads.php?ubb=showgallery&Number=703335#comments


beerchug
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #711313
10/12/17 2:33 pm
10/12/17 2:33 pm
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Canada
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Alexp Offline OP
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Alan, thanks mate!

I have the A10 style, as my B25 is the scrambler model. I would like to fit a bigger motor!!! Haha! Actually as it's my first ever motorcycle, I figured a 250 would suit me just fine!! I will see what the chances are of getting an original Dunstall, but I have a feeling that's a tall order!


Alex

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #711579
10/14/17 9:32 pm
10/14/17 9:32 pm
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Bolton Lancs UK
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Andy Higham Offline
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"Listen to me I must be going fast"


BSA B31 500 "Stargazer"
Greeves 200 "Blue Meanie"
Greeves 350
Greeves 360
Suzuki GSX1100 EFE "Sorcerers Apprentice"
GM500 sprint/LSR bike "Deofol"
Jawa 500 "Llareggub"
Aprilia RSV Mille "Lo Stregone"
'35 & '36 OK Supreme
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Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #711991
10/19/17 2:24 pm
10/19/17 2:24 pm
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S.E. Ohio
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HillbillyBarr Offline
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Since you've got a high pipe how about the C15's comp pipe? They go for about $90 US on eBay. I was thinking of using them on my 441 Victor

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #712063
10/20/17 6:02 pm
10/20/17 6:02 pm
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Canada
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Alexp Offline OP
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Hillbilly thanks for that! I'm going to look into that!!

Nick - good info mate thanks

Andy- haha. The sarcasm you bring always makes me laugh!! In my defence, I have a small, 250cc cafe racer. If it sounds like a bee, then it's not really the best thing ever. I would also like to not get hit by a car as here in Canada, motorcyclists tend to be looked over when people are making turns!!

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #720711
01/01/18 10:18 am
01/01/18 10:18 am
Joined: Sep 2015
Posts: 337
Kent, England
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John Alexander Online content
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Kent, England
i had a BSA 250 Starfire way back in 1968 and a UK dealership called Gander and Gray production raced in 67 but were unable to achieve the same performance from the 68 model, they reverted back to the standard silencer, and the performance was restored
Silencers are a science
Goldie John

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #720713
01/01/18 10:32 am
01/01/18 10:32 am
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Kent, England
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John Alexander Online content
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Kent, England
Sorry, an update, it was the 69 Model and they reverted to the 68 silencer, the 69 model did not rev as high.My star fire was moderately tuned by them and it revved to 9,000.

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #751389
10/03/18 4:14 pm
10/03/18 4:14 pm
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Posts: 306
Sacramento, CA
Denis J Offline

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Cone Engineering is best..HP first..silencing second. They're new muffler works to get rid of rasp, and affected peak power on a GP350 only .1 hp (41.2 at rear wheel)


Bikes
- Triumph’s- BSA’s- Norton’s- Matchless’s - Scott’s- A Weslake racer...many others from all over the world.
If it has 2 wheels I might need it.
“You can wheelie any bike if you just try”
Broken Motorcycle Mechanic at The Vintage Monkey in Sacramento, CA ...Old Motorcycle Specialists
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #758680
12/09/18 4:43 pm
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Alexp Offline OP
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Thank you all. Sorry I’ve been under the radar a bit lately, as a move to a new job, and new city has taken all my time. Sadly my BSA is currently 6 hours away as I’m still looking for a place here in Ottawa to work on it over the weekend! I do have a bunch of parts here for it though!!

Alex

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #760689
12/28/18 5:37 am
12/28/18 5:37 am
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Crossville, TN
DavidP Online content

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Most loud motorcycles just sound fast.


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762169
01/10/19 5:20 pm
01/10/19 5:20 pm
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Alexp Offline OP
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David. Define “fast”. I don’t ride old motorcycles to ride “fast”. I can ride a Ducati, or a bull or something if I want to go “fast”. I’m looking for the thrill of riding an old machine as fast as it can take me. Does that make it “fast”? Probably not. Does that make it fun? Yes. Don’t cramp my style.


Alex

Last edited by Alexp; 01/10/19 5:21 pm. Reason: Don’t cramp my style.
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762246
01/11/19 12:49 pm
01/11/19 12:49 pm
Joined: May 2013
Posts: 5,471
West Yorkshire
Allan Gill Online happy

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Originally Posted by Alexp
David. Define “fast”. I don’t ride old motorcycles to ride “fast”. I can ride a Ducati, or a bull or something if I want to go “fast”. I’m looking for the thrill of riding an old machine as fast as it can take me. Does that make it “fast”? Probably not. Does that make it fun? Yes. Don’t cramp my style.


Alex



Not quite sure why you added that last part.

You can have a silencer which gives a sweet noise without causing you to wear a deafaid, I don't think anyone really minds those too much. You can also have a silencer which just echos the raw note of the engine, sounds good.... unless your actually following the person that is and then it sounds like a bean can (we get loads of kids doing this with their bikes locally) the sad thing is people tar other people with the same brush if they see similar behaviour.


beerchug
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762335
01/12/19 2:09 am
01/12/19 2:09 am
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Alexp Offline OP
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Canada
Hey Alan!

It was mainly a response to what I’ve seen on this site as a lot of old men who do nothing but complain about anything other than what they deem is appropriate. It was not specific to anyone in particular, however it is something I’m noticing more and more about Brit bike. While I absolutely love the level of knowledge on here, I dislike the constant smarmy comments and tongue in cheek responses on other topics I’ve posted in. And others are feeling the same, and I’m not sure this is a forum I want to lay roots in. Having said all of that, I’ve met a few fantastic people on here, and the level of knowledge is stratospheric on this board! It’s a balancing act.

Alex

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762349
01/12/19 10:09 am
01/12/19 10:09 am
Joined: Dec 2004
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Scotland
kommando Online content
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kommando  Online Content
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Scotland
Its called Grumpy Old Man Syndrome.

Its an old man hobby so you either best live with it and filter out the Grumps or sell the bike as its not going to get better, only worse as we grow older wink

If you are noticing it at a young age and feel the need to moan about it then you in fact are showing early signs and will be one of the better exponents in later life wink

PS This site is one of the least Grumpy.

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762353
01/12/19 11:02 am
01/12/19 11:02 am
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scotland
triton thrasher Online content
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The forceful unsolicited advice about what you didn’t ask is inevitable. As is always being told that you’re wrong.

Out in the real world, you meet a wide cross-section of people who are polite and respectful but they can’t help you with your bike problems.

Go to an old bike show or parts sale and you will meet some opinionated big-heads who yell at you because you’ve got a Wassell dipswitch on your Bantam, or because you have asked about twin carburettors on a ‘Flash.

Some of those chaps are here on Britbike: why wouldn’t they be? Maybe I’m one of them... Help!


Amateur Loctite enthusiast.
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762543
01/14/19 3:04 pm
01/14/19 3:04 pm
Joined: May 2013
Posts: 5,471
West Yorkshire
Allan Gill Online happy

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West Yorkshire
Originally Posted by triton thrasher


Go to an old bike show or parts sale and you will meet some opinionated big-heads who yell at you because you’ve got a Wassell dipswitch on your Bantam, or because you have asked about twin carburettors on a ‘Flash.


One of the reasons I stopped going to bike shows.


Just smile sweetly and nod at the ones who try to pick and poke.If it helps im mid-30s


beerchug
Re: BSA loud mufflers? (Plus a little extra hp) [Re: DavidP] #762580
01/14/19 7:57 pm
01/14/19 7:57 pm
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Posts: 153
kelso scotland
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yosemite Offline
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kelso scotland
Originally Posted by DavidP
Most loud motorcycles just sound fast.

perhaps what he was trying to say is that louder silencers doesn,t always relate to an increase in power,had a bsa barracuda with a high level exhaust and a short loud trials silencer, wouldnt pull the skin of a rice pudding, spent weeks trying different timing, carb settings with little improvement then changed the silencer for a one of the A65 as an experiment and it went like a train , shame it was too long ,(would have stuck outthrough the number plate) ended up buying a reverse cone mega of eBay to get it to run reasonably. well From what I remember about exhaust tuning theory, the length of optimum length of an exhaust can be bcalculated, please please dont ask me for the formula, cos its about 40 years since I saw it, but I seem to remember the theory was that at peak revs there should be a high pressure pulse at the system exit, which is reflected back an gives a low pressure pulse at the head on the exhaust stroke to help getting the waste gasses out the engine, as t said its about 40 years since I studied this so dont hold this as gospel truth, I've been Known to be wrong before and somedays (today) have trouble remembering what I did with the 3/8 bsw socket I just used on the wheel spindle.
As for an increase in exhaust volume having an increase in awareness of your prescence by other road users, with the amount of sound insulation in the passenger area of modern vehicles then I would think there would be little increase unless the exhaust was what some would call excessive, and by that I refer to the local constabulary, or indeed whatever periodic testing your bike may have to go through to comply with the local regulations.
Yosemite

Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762592
01/14/19 9:22 pm
01/14/19 9:22 pm
Joined: Dec 2013
Posts: 4,527
ohio, usa
kevin roberts Online content

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kevin roberts  Online Content

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ohio, usa
loud pipes makes the headlights come on

[Linked Image]

"lissen! he's ridin a BSA!" she's sure to be sayin


every day you do not take a chance is a day of your life that you will never get back.
Re: BSA loud mufflers? (Plus a little extra hp) [Re: kevin roberts] #762594
01/14/19 9:39 pm
01/14/19 9:39 pm
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Posts: 3,792
gastonia nc
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raf940 Offline
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gastonia nc
'but what that strange clatterin' noise? better tell Pa that Bubba is cumin up the road agin"


1972 Triumph T120
1968 BSA A65
1968 MGB Roadster
1979 Chevrolet Camaro Berlinetta
1969 Honda Mini Trail
1939 farmall f30 tractor
2004 Honda Shadow Aero
1972 BSA Thunderbolt
1975 yamaha xs650b
1972 Norton commando
2 olive drab WWII military bicycle replicas
Re: BSA loud mufflers? (Plus a little extra hp) [Re: Alexp] #762676
01/15/19 11:26 pm
01/15/19 11:26 pm
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Posts: 189
Canada
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Alexp Offline OP
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Haha! This thread has gotten fantastic!

Alex

Re: BSA loud mufflers? (Plus a little extra hp) [Re: NickL] #762909
01/19/19 12:47 am
01/19/19 12:47 am
Joined: Jun 2017
Posts: 189
Canada
A
Alexp Offline OP
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Alexp  Offline OP
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Canada
Originally Posted by NickL
The only way you can sneak around on a beezer is by closely following a triumph!




That actually made me laugh out loud! Dammit I’ve spilt a lager.

Alex


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