CALLING ALL MASTER FABRUCATORS

[Nojokirk 75cl360]

Hey guys, i need someone who could build me a down pipe expansion chamber for my 1975 Yamaha DT250B.
I want to give it a bit more power and more engine room. The stock pipe goes over the head and it would make working on the engine impossible without taking eerything off lol
Here is a pic of what im kinda looking for.

 

[MotoMadness]

Pipe fabrication for 2 strokes is a complicated tasks. Takes knowledge and alot of calculation to get a custom fabbed chamber to maximize the power.

I believe there are actual programs that can calculate and design one for you after plugging in a bunch of numbers.

This is a pretty good explantion of 2 stroke exhaust theory

http://3cyl.com/mraxl/manuals/chamberdesign/2003exhaust.pdf

I've seen people use this program to

http://www.buildandclick.com/

 

[VonYinzer]

Have you ever priced custom expansion chambers? That pipe will cost as much as you paid for the bike.

 

[Whitey80]

That DT motor in whatever that frame is makes it look like a toy.
If you aren't wanting to keep that stock one, get a stock pipe from an earlier model. My '72 pipe runs down the side, I like the looks.

 

[bradj]

I know a guy

 

[Nojokirk 75cl360]

Hey greg, i love what you did with your dt250 man, its killer.
Brad, have you even finished yours?

 

[bradj]

Hey greg, i love what you did with your dt250 man, its killer.
Brad, have you even finished yours?

nope but ill finish it and sell it to ya if the money right

 

[Nojokirk 75cl360]

cool. aslong as it is fully functional.

 

[Whitey80]

Hey greg, i love what you did with your dt250 man, its killer.
Brad, have you even finished yours?

That was well before it was finished, took on a different look by the end

 

[Nojokirk 75cl360]

That was well before it was finished, took on a different look by the end

Still looks great with the baige seat man. I want mine to look like that. how did you lower the front end?

 

[Whitey80]

Still looks great with the baige seat man. I want mine to look like that. how did you lower the front end?