Going to make my own mufflers!

Power, noise, mapping, price, and the ever popular : "More power or just noise?"
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mastera210
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Going to make my own mufflers!

Post by mastera210 » Wed Aug 28, 2013 12:38 pm

I think I might be on to something. Was just looking around and looked at Magnaflow site they make performance mufflers for autos. They are 100% Stainless Steel straight through with 2.5in core with stainless steel mesh then a sound deadening wrap and make many round sizes. The two im looking at are 18in long has 2in inlet/outlet and and two body diamiters 4in or 6in dont know the dim of stock mufflers as on road. Have my mach buddy make ring to weld on end to bolt to pipe the polish them. The GREAT thing is they are about 75 dollars each! and lifetime warranty! the part numbers are 10424 for 4in body and 12644 for 6in.

How about it Kev think it will work?

Kafn8td
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Re: Going to make my own mufflers!

Post by Kafn8td » Wed Aug 28, 2013 1:36 pm

2" inlet and outlet...It might not create enough backpressure, so you might have to choke it down with inserts. My other guess it will be really loud. :twisted:
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downunder
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Re: Going to make my own mufflers!

Post by downunder » Wed Aug 28, 2013 1:58 pm

If you really want to give yourself a challenge, how about converting to a single system with an existing aftermarket slip-on in its usual position.
Then fabricate an 8 to 10 litre auxiliary fuel tank (similar shape to the slip-on) for the other side of the bike.
Might get a few takers if it works and looks OK at a fair price.
Gone but not forgotten: '74 Honda XL100, '75 Suzi TS100, '76 Suzi T500, '78 Yam XT500, '80 Suzi GSX1100ET, '81 Suzi GSX100EX, '84 Honda VF1000R, '99 Honda CBR900RR, '10 KTM 990SMT

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Re: Going to make my own mufflers!

Post by ultrachrome » Thu Aug 29, 2013 7:15 am

I bookmarked this site a while ago.

http://www.pjengineering.co.uk/index.php

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kevxtx
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Re: Going to make my own mufflers!

Post by kevxtx » Thu Aug 29, 2013 12:48 pm

99% of the cores are 50mm.

mastera210
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Re: Going to make my own mufflers!

Post by mastera210 » Thu Aug 29, 2013 1:25 pm

kevxtx wrote:99% of the cores are 50mm.
Well thats only 1/2in remember im in USA. Was going to make some inserts to go in the end. Whats the diamiter of stock pipes? im on the road right not. Im just playing with idea I meam 75 dollars each polished stainless cheap test goat!

Kafn8td
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Re: Going to make my own mufflers!

Post by Kafn8td » Thu Aug 29, 2013 1:45 pm

50mm is almost two inches (1.96). The outlet of my Leo's with the baffle in is 1.4" (36mm) and I put another insert in that brought it down to 1.2".

This sounds like a fun project. I couldn't find any weight info on them any idea how much they weigh?

You could also try a DB Killer like Dan Moto. http://www.dan-moto.com/DM_INT/removabl ... t-298.html It's cheap and easy to insert and remove. You could have a larger sleeve welded to it to make it fit, or Yoshimura uses a slip on sleeve that is held on with an allen screw you could purchase. There is also a bunch on ebay, but most of them are overpriced.
'10 KTM SMT - Leo's, CPR Rottweiler, SAS blanking plates, secondary's removed, PCV, AT-300. Too much fun.
'14 Triumph Explorer
'08 KTM 250 XCF
'14 Sherco 300
A Bunch in the past

mastera210
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Re: Going to make my own mufflers!

Post by mastera210 » Thu Aug 29, 2013 9:19 pm

Kafn8td wrote:50mm is almost two inches (1.96). The outlet of my Leo's with the baffle in is 1.4" (36mm) and I put another insert in that brought it down to 1.2".

This sounds like a fun project. I couldn't find any weight info on them any idea how much they weigh?

You could also try a DB Killer like Dan Moto. http://www.dan-moto.com/DM_INT/removabl ... t-298.html It's cheap and easy to insert and remove. You could have a larger sleeve welded to it to make it fit, or Yoshimura uses a slip on sleeve that is held on with an allen screw you could purchase. There is also a bunch on ebay, but most of them are overpriced.
I have a buddy thats machinest so making parts no problem. Im thinking 200 dollars in it!

mastera210
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Re: Going to make my own mufflers!

Post by mastera210 » Thu Aug 29, 2013 9:27 pm

And no repacking them

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