Weiner Pipe

[2SlickNick]

Hey guys,

I am needing some help on exhaust pipes.

I have been working on my DB 30 trike build for my wife and need an exhaust. My wife wanted the stock muffler because it is quiet. I made a custom TC mounting plate to house my 7" driven and I don't have a lot of clearance from exhaust to top of frame. ( see pic ).

I thought I might be able to cut and flip stock exhaust but it will burn her leg if I do that.

I can't go under seat because my fuel tank is there ( don't want exhaust on fuel tank).

Then I saw on OldMiniBikes the weenie pipe and it looks like it will be a good solution because of the bend and a muffler attachment. but they are out of stock. If any has one I am curious of the overall height from flange is on the weiner pipe.

I guess I could order you weld set but it does not include the threaded end for a muffler.

What do you guys think? View attachment 70140 View attachment 70140

 

[Stangrcr1]

I would mount that tank on the motor where the stock tank was, and use a standard header.

Only other thing I can think of is a custom header.

 

[2SlickNick]

Not enough clearance for tank.
If there was my stock muffler would fit.
My motor / TC mount is 3" tall rectangle tube

 

[Mike R.]

does the engine need a 3" lift? usually 1-5/8ths is enough
and it may need a fuel pump if the tank sits at that level

 

[2SlickNick]

I kind of do need the lift for the 7" driven to clear frame. Based my design off of this...https://www.bmikarts.com/mobile/Motor-Mount-Plate-_p_1052.html
If any one knows where to purchase a weenie let me know please.
Has anyone e ordered the you weld kits? Or maybe know where the flanged treaded piece is for sale?



Edit : it does need a fuel pump which I have and Already tapped the valve cover.

 

[OND]

Nick , I had a weenie pipe...at one time. I'll check in a little while when I head out to the shop.

 

[2SlickNick]

Nick , I had a weenie pipe...at one time. I'll check in a little while when I head out to the shop.

Thanks!
I am just not feeling like making a pipe right now unless I have to. Maybe then OldMiniBikes might restock 'em.

 

[OND]

Nick, this is what I have ...I used the flange for another header. You can have this for free ..If ya just pay the shipping.

 

[davidlamb78]

They can be bought for lawn mowers at hardware shops. Make sure you get the right size. I bought a similar one for my Tec HS 40, and I think it was less than $5.

 

[born loser]

I've made pipes like that from the stock flange and a 90 degree conduit bend from home Depot. Then weld on a female black pipe fitting for the muffler. Total cost Maybe 10 bucks. The 90 can be cut so it lays nice and flat like in the picture above

 

[2SlickNick]

Thanks Eric!

Even though I was looking at the " U " shaped weenie pipe, I will just use the above pipe. I will just add it the the existing flange and position it accordingly to fit my application.

Thanks for the help guys.

I think it should be somewhat muffled with that screw on muffler.

 

[Commonrail]

I had to refabricate the header after I installed the under seat fuel tank. They say nothing about exhaust issues or clearances. I cut it in 4 different sections and bends and finally welded it to this simple route.

 

[2SlickNick]

I got the pipe; thanks again Eric.
I see why they call it a weenie pipe. I thought it was going to be bigger... " That's what she said. ":laugh:

Any ways I think it will work out just right. I will buy one of these mufflers.

The one there now is an open muffler. I will need the smaller on the left or the pancake muffler that is for a 2-4 hp. those should be more restrictive to quite it up some for the wife. I won"t get a chance to work on it until Monday. It shouldn't matter that these mufflers are for a 2-4hp right?

 

[OND]

You're Welcome Nick, I'm glad It worked for ya ! Yea Its a weenie pipe . :laugh:

 

[2SlickNick]

What do you guys think? To close?
It is running down the frame and is pointed on the edge of fuel tank 3 inches away
If too close for comfort, I am going to see about putting a spout on the end to aim it away more.

 

[OND]

Good Idea Nick..yea turn the exhaust out, and maybe wrap the header.

 

[2SlickNick]

Good Idea Nick..yea turn the exhaust out, and maybe wrap the header.

I tried welding a spout on the muffler and I burned right through it:doah:

so...I went and bought a 90 degree pipe bend and welded that to it. Problem solved - I did wrap it too:thumbsup:. It muffles pretty good and meets the wife's approval, as far as not being too loud. The muffler is for a 2-4hp.

 

[OND]

:thumbsup: haha..as long as the wife approves, Its OK . :thumbsup:

And make sure she doesn't burn her leg ! :scared:

 

[2SlickNick]

It is tucked in and under frame. she would have to, intentionally touch it to get burned.

 

[Moedog07]

Don't forget to add a brace to the header. Some feel it may not need it but I always brace mine. Broken or stripped head studs suck.