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 custom building exhaust 
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Post custom building exhaust
well im thinking bout tackling the process of building a custom exhaust and wondered if anyone has done this that has pictures of building it and what kind of things should be taken in account when figuring out how to set it up. also would straight pipes be a good idea? or should i put some sort of muffler on there like a motorcycle muffler?

i am going to be doing this for a 20 hp B&S im not really looking to amp up the speed or nothing i just have a rusted out muffler and figure it might be cheaper to just build me my own.

what are yalls thoughts and opinions?


Thu Jan 23, 2014 6:49 pm
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Post Re: custom building exhaust
I use the flanges from the original muffler then step it to 1 1/4. 2 to 1 style with bout 20 inch headers. Then mount muffler of choice on the backbone of the lt. Is your a lt? Ive used single glasspacks or dual stock sportster mufflers. The stock harleys are the quieter of the two The tubing u can order from jegs or summit. Ive never posted a pic on here before but i will as soon as i figure out how


Fri Jan 24, 2014 12:10 am
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Post Re: custom building exhaust
ya its a longtail and alright ya i was debating on doing a 2 to 1 style or doing dual exhaust. just kinda which ever looks better and works.. dont need to go messing anything up. is there any pros or cons to doing a 1 muffler compared to 2?

and if you need help with posting a picture all you do is go to tinypic.com upload your picture on there then copy the source code that has the Img< code on the beginning of the code. once you copy that code just past it in here and it will work


Fri Jan 24, 2014 7:18 am
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Post Re: custom building exhaust
There are several on here that have built their own. I have built several SS to mimic the stock one on my 36. Use the search feature and you will find all sorts of different designs.


Fri Jan 24, 2014 8:05 am
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Post Re: custom building exhaust
ya i searched a few and it gave me some ideas but im curious if there is any difference from doing a dual muffler set up where its two small straight pipes to two glass packed or atv/dirtbike mufflers (which would be extremely easy to do) or doing a 2 to 1 where you pretty much make headers down to 1 glass pack muffler or dirtbike/atv muffler


Fri Jan 24, 2014 8:11 am
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Post Re: custom building exhaust
Pic is 2 harleys. Normaly a 2to 1 has a smoother sound. True duals are more "poppy". Having a little xtra length on your header increases torque. Hopefully this pic will attach


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Fri Jan 24, 2014 9:17 am
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Post Re: custom building exhaust
that thing looks sick! and ok so yours would be a true dual?


Fri Jan 24, 2014 9:26 am
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Post Re: custom building exhaust
This one has an x pipe to balance the sound. Its pretty quiet and runs on a tour boat on caddo. Sounds good an performs good with other modd


Fri Jan 24, 2014 9:41 am
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Post Re: custom building exhaust
so being an x pipe im guessing they connect in the middle of the pipe where they touch right before the mufflers


Fri Jan 24, 2014 9:53 am
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Post Re: custom building exhaust
Yes sir. There are many different ways. Just have fun with it. If it flows too good u might have to up jet your carb. But thats not hard


Fri Jan 24, 2014 10:00 am
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Post Re: custom building exhaust


Fri Jan 24, 2014 10:04 am
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Post Re: custom building exhaust
If your motor flows more air u will need to add a bit of fuel to keep your engine runnin cool. Not enough fuel and your motor will run lean and hot. By "upjet" i mean increasing the size of the main jets in carburator. For nice exhaust only i add 5-8% on mainjet size


Fri Jan 24, 2014 10:17 am
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Post Re: custom building exhaust
Here's a stainless muffler I built


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Fri Jan 24, 2014 4:55 pm
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Post Re: custom building exhaust
Aint seen one like that. Did you build the whole muffler?


Fri Jan 24, 2014 6:44 pm
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Post Re: custom building exhaust


Fri Jan 24, 2014 6:59 pm
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Post Re: custom building exhaust

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Sun Jan 26, 2014 7:32 pm
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Post Re: custom building exhaust
Wonder how 2 Curtis sparks mufflers would sound

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Sun Jan 26, 2014 7:43 pm
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Post Re: custom building exhaust
Can't rem the site but u can buy the flanges on the web


Sun Jan 26, 2014 7:50 pm
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Post Re: custom building exhaust
well look who's back on mmt ^^^^LOL!! its some VW website to get flanges


Sun Jan 26, 2014 7:59 pm
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Post Re: custom building exhaust
http://www.mandrel-bends.com/catalog/fl ... -2377.html
http://www.cbperformance.com/ProductDet ... tCode=3693


Sun Jan 26, 2014 7:59 pm
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Post Re: custom building exhaust
Since I work at a machine shop I made the flanges! !
I ordered the 1 1/4 stainless tubing already bent
I welded caps on 1/4 wall 5" tubing then took a skim cut to cut the weld down and give it a smooth look


Sun Jan 26, 2014 8:02 pm
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Post Re: custom building exhaust


Sun Jan 26, 2014 8:04 pm
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Post Re: custom building exhaust
No, I don't think so, but measure yours. One of those sites probably has something that will fit.


Sun Jan 26, 2014 8:05 pm
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Post Re: custom building exhaust


Sun Jan 26, 2014 8:05 pm
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Post Re: custom building exhaust


Sun Jan 26, 2014 8:06 pm
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Post Re: custom building exhaust
Quick an easy. Small diameter and long tube header. 2/1 collector. Glasspack and flex joint from oreilly bout 75 bucks total . These pipes make for a very strong motor


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Tue Jan 28, 2014 6:14 pm
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Post Re: custom building exhaust
Pm me your email address. I can send you some sketches of the ones I have built.

I still have a couple sets of ss flanges that should fit that engine.

Mag10


Wed Jan 29, 2014 8:39 pm
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Post Re: custom building exhaust
. I used the old flanges and used a piece of 3 inch processing pipe with a 1 inch stub out the back cut on a 45 with 2 homemade caps be ready to be the center of attention on the river cause when you have it loud people Ganna stare lol


Fri Jan 31, 2014 8:12 pm
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Post Re: custom building exhaust
Made this one a slip fit

IMG_1196.JPG
IMG_1194.JPG

When I added hydro reverse, the cylinder wouldn't clear the exhaust so I made another. This time, no slip fit.

IMG_2419.JPG


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Mon Feb 03, 2014 6:05 am
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Post Re: custom building exhaust
Looks good banded!!


Mon Feb 03, 2014 6:16 am
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Post Re: custom building exhaust


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Mon Feb 03, 2014 9:56 am
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Post Re: custom building exhaust
NICE!!!!!!!


Mon Feb 03, 2014 12:14 pm
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Post Re: custom building exhaust
that thing looks good! did you do any sort of baffle on the inside?


Mon Feb 03, 2014 7:26 pm
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Post Re: custom building exhaust
Where is Schauv01 with that Ghostbuster backpack he invented? :lol:


Mon Feb 03, 2014 7:53 pm
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Post Re: custom building exhaust


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Tue Feb 04, 2014 5:37 am
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Post Re: custom building exhaust
Did it have the pining sound like a stock gutted?


Tue Feb 04, 2014 7:46 am
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Post Re: custom building exhaust


Tue Feb 04, 2014 8:46 am
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Post Re: custom building exhaust
Built this last year. Been running gutted stock exhaust lately just to compare. Hard to choose a winner.


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Tue Feb 04, 2014 8:56 am
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Post Re: custom building exhaust
Not to hijack this thread or anything, but since were talking about exhaust, where the hell can I get some new exhaust bolts? I have been using the same stock rusted ass bolts for a while now and the head is starting to round.


Tue Feb 04, 2014 9:25 am
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Post Re: custom building exhaust
Fastenall


Tue Feb 04, 2014 10:10 am
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