custom exhausts!

[jr dragster T]

Hmm I wonder why the videos from photobucket dont play for me?

 

[r_chez_08]

wierd! do they usually? also how loud is your 2 stage header, and would it be hard to make one similar (but of lower quality!)

 

[jr dragster T]

My kart with the stock GX200 with the 2 stage header has a nice kinda quiet idle but as soon as you punch it it screams.

 

[nickzom]

i made a couple headers for my Briggs 5 horse, i will see if I can get pics.

 

[r_chez_08]

i am now thinking of using a lynx deoderent can near the end as a silencer, but i cant weld it as it is made of aluminium. how else could i keep it in place?

here is a pic of my idea with terrible photoshopping!

i was going to use 30mm i/d tube/pipe and have it going right through the can, with a few holes drilled in the tube when it enters the can, and a few holes in the end of the can.

 

[Kaptain Krunch]

You can drill a few holes in the side of the can and put some springs in there, then stretch them back and attach them to the pipe, you can weld a few wasters upright on the pipe for the springs to attach to.

 

[r_chez_08]

thanks
i dont have any springs, so i might get a bigger bit of steel tube and jam it either side of the can and weld it.

 

[Kaptain Krunch]

Putting the lynx can on the end with just a few holes drilled in the pipe and a few in the can wont do as much as if you put it right over the top of the pipe and drill a bunch of holes it the can. Or if you have one pipe going into the can thats blocked off at the end with a bunch of holes drilled in it, then another pipe in the other end, also blocked off with a bunch of small holes drilled in it.
Heres the inside of a car muffler, and thats kind of how you could set up the lynx can, except smaller and a little different (pipes dont have to be offset, and you dont need the separate chambers).

 

[r_chez_08]

thats a good idea, but i still have the problem of attaching the can.

 

[Kaptain Krunch]

springs aren't expensive...

 

[r_chez_08]

true, but i was trying to make one with stuff lying around

 

[Kaptain Krunch]

you dont have any springs at all? what about some kind of metal wire?

 

[r_chez_08]

may work, but how would you stop the can comig towards the wire if the wire bends? what about this?

 

[r_chez_08]

wait the bit of wire on the other side hold it! stupid me! i may try that, but wouldnt the method above be stronger and look better?

 

[theo]

I would be afraid of loosing power with these can ideas.

theo

 

[Kaptain Krunch]

I just went out and whipped one up, i dont see much power loss myself, i made mine pretty high flow, and it sounds nice. I doubt i'll use it though, because i need all the power i can. I have a 100c bike engine on mine and its geared for 60mph haha so every little bit counts. Anyways, yea r chez, using the bigger id pipe on each side like locking collars would work good.

 

[theo]

If you do a reading with a straight pipe then add on your muff and recheck your top speed, you will see if there is a power drop.

theo

 

[Kaptain Krunch]

I dont have a dyno, thats my calculated speed. I'm sure it lowered the total hp by a little, but not very noticeable.

 

[r_chez_08]

If you do a reading with a straight pipe then add on your muff and recheck your top speed, you will see if there is a power drop.

theo

im no worried about a small power drop, as i probably wont use it all for a while.
i dont want my exhaust too loud, as i think it would **** me off. i just want to do whats best for the engine, and apparently even some of the worse custom mufflers are better than a stock exhaust.

 

[r_chez_08]

ok, i mocked something up on the ground today. i have scrapped the deoderent can idea, as my can was flimsy and broke. here is a pic