Did I discover an exhaust extension for clearence?

GoldenMotor.com

EmCee

New Member
Jul 16, 2022
16
15
3
29
Hey gang,

So, the original exhaust that comes with the kit was not able to clear my pedals. I peeked online at exhausts that could, I saw the viper exhaust that bends but didn't want to spend the money. I ordered the half moon exhaust and to my surprise, it works pretty well.

In the first photo of the exhaust, I circled the part I am discussing about in red. I am unsure what the name of this "end" is but if you could tell me I would appreciate it because it's driving me bananas.

So, I was thinking about if it's possible to make an extension for the exhaust so that it would clear the pedals. It would be cheaper and you wouldn't have to do all that heating and bending. I did find online that intake manifold pipes have the same "ends" as the exhaust that comes with the kit.

I made a diagram showing what it looks like when you just connect the exhaust to the engine. The second diagram shows what it would look like if you took an intake manifold pipe and bolted that to the engine, then bolt the other opening end to the exhaust.

They come in different sizes and shapes so it would come down to you finding one that works for your bike. I think this may be a cheaper way to go about making the exhaust work on your bike. I just need to confirm the dimensions I have with the kit exhaust to find an intake manifold that fits.

Unsure if I stumbled upon something great or something dumb. I'll let you guys decide.

P.S - Is there a name for the type of "hole" these exhaust kits have a intake manifolds have? Unsure if they have a name.
 

Attachments

  • Like
Reactions: fasteddy

Greg58

Well-Known Member
May 1, 2011
5,363
2,590
113
66
Newnan,Georgia
The part you have circled is the flange, the best way to get clearance is to heat and bend to fit, I’ve also drilled the mount hole slightly larger so I could swing the muffler away from the pedal.
 
  • Like
Reactions: fasteddy

EmCee

New Member
Jul 16, 2022
16
15
3
29
The part you have circled is the flange, the best way to get clearance is to heat and bend to fit, I’ve also drilled the mount hole slightly larger so I could swing the muffler away from the pedal.
I figured this would be cheaper if you don't have a torch. I was going to bend mine and I seen the prices of how much cans of gas are and torch heads. I've heard about people drilling the holes so you can play more with them but haven't really seen anybody do it and post pics. In the sense of showing "hey this is what it looks like and this is what I did"
 
  • Like
Reactions: fasteddy

Venice Motor Bikes

Custom Builder / Dealer/Los Angeles
Mar 20, 2008
7,338
1,991
113
Los Angeles, CA.
The easiest way (for me) is to bend the pipe a little to clear the frame, (& or) Dremel the holes a little to rotate the pipe inward to clear the pedal.

I've been doing this for years... To easily bend the pipe, I have a 1/2" hole in the door jam of my shop; I insert a solid metal bar into the hole & slip the exhaust pipe onto the bar... Then grab the muffler end & BEND!! No torch needed! ;)
 

EmCee

New Member
Jul 16, 2022
16
15
3
29
The easiest way (for me) is to bend the pipe a little to clear the frame, (& or) Dremel the holes a little to rotate the pipe inward to clear the pedal.

I've been doing this for years... To easily bend the pipe, I have a 1/2" hole in the door jam of my shop; I insert a solid metal bar into the hole & slip the exhaust pipe onto the bar... Then grab the muffler end & BEND!! No torch needed! ;)
I came up with the idea for people who don't want to buy a Dremel and it's bits to use it one time. The idea was cheap and dummy free.

I'm confused with how you said you bend the muffler. Side note, I have a couple bike racks in the back of my place... I think I'm going to see if I can bend the exhaust this way. Brb in 30.
 

EmCee

New Member
Jul 16, 2022
16
15
3
29
For guys who can't afford a Dremel, they can simply use a drill & a $5 Dremel bit to grind the holes.

I don't have a drill for example, I can't see myself spending the money on something I would need one time. I only get $186 a month on welfare. I got clean from Heroin last September and I'm in a halfway house. I got into cycling back in April and this is what I spend my money on now.
 

Chris Doe

New Member
Jul 25, 2022
4
0
1
34
First of all congratz on kicking the junk! As for the drill though you can find a cheap one at a pawn shop or on peer to peer selling sites (ebay, craigslist, etc.) You dont need to get anything fancy or name brand. But if this is going to be your new addiction a drill will come in handy and give you more options for upgrades and mods.
 

Greg58

Well-Known Member
May 1, 2011
5,363
2,590
113
66
Newnan,Georgia
EmCee, if you have a local auto mechanic I'm sure most will help you out, a lot will do simple things if you explain it's for a motorized bicycle, if you promise to bring it by to show it they'll probably do it for nothing.
 

Chris Doe

New Member
Jul 25, 2022
4
0
1
34
I don't see why it wouldn't but it would add another gasket that could fail. I would also assume that it would shake loose easier without an extra anchor point. And finding the right angle without being able to fit them could be difficult. In my opinion it would be way less of a headache to just bend the exhaust or mod the holes.
 

Venice Motor Bikes

Custom Builder / Dealer/Los Angeles
Mar 20, 2008
7,338
1,991
113
Los Angeles, CA.
So would this work or not? That's what I asked not for nothing.
I really don't think this will work well... the bolt patterns & flange sizes are totally different; & you're just going to end up having to spend more money to buy tools to modify the parts to fit. (& then if you do manage to get everything to bolt together, you're probably going to end up having constant exhaust leak problems. :(

If money is an issue, go buy a cheap $5 round file & follow the directions I gave above... that will get your bike going, (& keep it going). (^)
 
  • Like
Reactions: Greg58

Mossy

Well-Known Member
May 20, 2022
1,128
819
113
Trailer hitch and a tire iron... Anything really to hold it and bend it just slightly... A good kick mounted without the gasket then put the gasket back on...
 
  • Like
Reactions: Larry Trotter
Dec 11, 2014
628
14
18
Tucson
It takes a LOT of force to bend them. And it's easy and affective to slightly oval the holes and rotate it. I'll post a video on how to mod the holes next time I'm doing a build. My YouTube is "All About Bikes"