[walker]

Can you make a custom exhaust for an 1989 evo motor. like a badass set of drags.. i belive the 89 evos is the same motor upintill an 98

 

[Hawkmann]

You can make a set of custom exhaust for just about any bike on the market.

 

[walker]

really....

 

[Dave63]

All you need are the end fittings that go to the motor, and you go from there.....

 

[Badassbrutus]

Cut the flanges of the old set of pipes and construct from there.
or Builtwell sells a complete build it your self kit with all the flanges and pipes youll need.Alot of people i know used it and its A-1!!

 

[walker]

well i have no exhaust at all... I Would like a nice short drap pipe.. i thought you had to have a certain amount of backpressure

 

[Dave63]

well i have no exhaust at all... I Would like a nice short drap pipe.. i thought you had to have a certain amount of backpressure

You need EXHAUST VELOCITY. Backpressure is created by baffling.

The diameter of your pipes are as important as the backpressure. Short pipes, even at 1-3/4", generally cause too much cylinder heat to be effective and take away from bottom end/midrange torque. Their only values would be at high RPMs......

There are other options though.... Torque cones, Internal restrictors and of course, longer, but cool pipes. :thumb

 

[walker]

well i guess i will wait till i fet it almost together and then work on the pipes to see what looks good.... right now im alittle unhappy i was told the frame had a 40 rake.. and its only a 34... i dunno what it will look like now

 

[Badassbrutus]

Post up some pics

 

[walker]

i dont have a front end yet..... trying to see see if my local shop will fix my rake to 40,

 

[walker]

but i would like to see some pics of custom bikes witha 34 rake

 

[walker]

closest thing i found was

http://www.twistedchoppers.com/bike.asp?id=13

 

[Dave63]

Have you considered raked trees? You can get 6* by using them........

http://rakedcycles.com/site.htm


Before you do anything, I would also check and make sure your 40* rake is going to be safe too, just to make sure.....

If you start adding too much rake to a frame, your handling goes out the window and the bike becomes unsafe.

http://www.rbracing-rsr.com/advchoppercalc.html