View Full Version : Making an Exhaust
David Sleith
18-01-2010, 01:17
Thought I would have a go at making an exhaust and practice my welding skills. Was harder than I thought and it was a first try. Next one will be better. There is a flexi on the exhaust now which is not shown in the pictures and I would make the downpipe a little less restrictive with longer single pipes before they merge and less of an angle.
Pictures say a thousand words
http://www.woodsport.org/forum/images/recovered/2010/01/283.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/284.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/285.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/286.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/287.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/288.jpg
http://www.twobrutal.co.uk/forum/images/recovered/2010/01/209.jpg
http://www.twobrutal.co.uk/forum/images/recovered/2010/01/210.jpg
http://www.twobrutal.co.uk/forum/images/recovered/2010/01/211.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/289.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/290.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/291.jpg
http://www.twobrutal.co.uk/forum/images/recovered/2010/01/212.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/292.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/293.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/294.jpg
http://www.twobrutal.co.uk/forum/images/recovered/2010/01/213.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/295.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/296.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/297.jpg
http://www.twobrutal.co.uk/forum/images/recovered/2010/01/214.jpg
http://www.woodsport.org/forum/images/recovered/2010/01/298.jpg
wow, making your own muffler is pretty hardcore :)
looks pretty good other than the merge angle. but you already mentioned that
Next one will be better? This one is already brilliant mate!
Not a lot of people make the ENTIRE exhaust themselves, looks awesome, really curious as to what this is going to sound like. And those welds on the Y piece look great!
snowtigger
18-01-2010, 07:33
Maybe a bit too loud without a perferated baffle inside the silencer and some fibreglass matting.
tripod23
18-01-2010, 09:30
you must have balls the size of an elephant - jesus every credit - i hope it all works out for you
nice work,
i like the muffler, have thought about trying to do one myself, but i think thats as far as i would get... trying.. haha
will be interesting to hear how loud it turns out to be
David Sleith
18-01-2010, 12:12
Sounds really good - noise level is somewhere between a Janspeed and a Mongoose.
The filling in the muffler is a product called acoustafil. Its not fibreglass wool. It breaks a fine stitch matting when first heated and bursts into a cotton wool type material which absorbs the noise. It has a higher resistance to blowing out the exhaust and you don't need to wrap around wire wool along the length of the perforated tube inside the box. It avoids the need to have internal baffles while keeping the flow high.
Took a lot of research to find something that didn't need repacked every 500 miles like the race exhausts you can buy. Its much better than the standard straight thru cans.
Paul Woods
18-01-2010, 18:13
Hi david, that's not a bad effort at all for a first attempt mate! Only thing i would say is it desperately needs a flexi in there somewhere.
snowtigger
18-01-2010, 18:57
Snap on the bottom of the down poop.
Snap on the bottom of the down poop.
the man finally lost his mind. *moment of silence*
snowtigger
18-01-2010, 19:00
Wibble.
Wibble.
one of these days you'll post a video on you tube and I'll be able to put a voice to all this nonsense. for now, the default accent in my head simply doesn't work for the crap you come up with :blah:
Paul Woods
18-01-2010, 19:14
Marc would it mess with your default accent for tigger even more if i told you his real name is Michael Jackson? :) 2gr mk1 sha-mone!!!
Marc would it mess with your default accent for tigger even more if i told you his real name is Michael Jackson? :) 2gr mk1 sha-mone!!!
actually i knew that when he sent me a paypal payment.
most unfortunate name.
snowtigger
18-01-2010, 19:54
Don't dis the Jackson clan there's a lot of us black bretheren out there I'm his anglo Saxon brethren A hi hi cmon now sha-mone!!
I nearly married a girl called janette but she declined as she was Jewish "shalome a sha-mone".
Don't dis the Jackson clan there's a lot of us black bretheren out there I'm his anglo Saxon brethren A hi hi cmon now sha-mone!!
I nearly married a girl called janette but she declined as she was Jewish "shalome a sha-mone".
i got nothing, but we sure derailed the hell out of this thread... AGAIN! :whistle:
I know a micheal jackson, he likes to play with his hose...not sure if thats why he has the nickname "willie"
helps that he is a fireman though...
solid effort on your exhaust though, the matt you used, where did you find it? links are our friends;)
been temted to do one for the V6, starting at the manifold flange though...
David Sleith
19-01-2010, 23:08
I know a micheal jackson, he likes to play with his hose...not sure if thats why he has the nickname "willie"
helps that he is a fireman though...
solid effort on your exhaust though, the matt you used, where did you find it? links are our friends;)
been temted to do one for the V6, starting at the manifold flange though...
http://www.saveguard.com/exhausts/acoustafil2.htm
David Sleith
19-01-2010, 23:09
Hi david, that's not a bad effort at all for a first attempt mate! Only thing i would say is it desperately needs a flexi in there somewhere.
One already in Paul - just didn't take a pic of it
My new air die grinder turned up and a set of carbide burrs so I'm tempted to alter the merge a little
if that stuff really is as good as the blurb says, sports mufflers are not for us anymore...
was it a cost effective solution?although life span has yet to be factored in.
David Sleith
20-01-2010, 15:03
if that stuff really is as good as the blurb says, sports mufflers are not for us anymore...
was it a cost effective solution?although life span has yet to be factored in.
had to buy a box which would do a few cans but figure used about £10 worth
Read this article
http://www.2bular.com/component/content/article/1-latest-information-from-2bular/7-noise-suppression-moves-into-the-21st-century.html
Gotta say hats off to you David. Thats a cracking job you've done to build a complete system from scratch. how much did it cost you to make?
monkeymax
20-01-2010, 20:21
Where'd you get the flexi from David? I've been looking at some from Jetex...
snowtigger
20-01-2010, 22:31
It does look a fine bit of kit like a janspeed or mongoose.
I'm highly impressed with the level of work hats of to you mate.
for $10 cant really argue, even if its a total falure....its not like your betting your lifes earnings on something:)
even if you have to replace it in a few years....not like you cant at that price
Limeymk1
21-01-2010, 14:23
Where'd you get the flexi from David? I've been looking at some from Jetex...
These guys are quite well priced for component exhaust parts Max.
http://www.ojzengineering.co.uk/product.php?product=21
David Sleith
22-01-2010, 17:21
Gotta say hats off to you David. Thats a cracking job you've done to build a complete system from scratch. how much did it cost you to make?
reackon it cost about 120 quid to build
David Sleith
22-01-2010, 17:24
Where'd you get the flexi from David? I've been looking at some from Jetex...
http://exhaustpartsuk.com/
used this lot - not bad on price - as for quality time will tell
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