Stinger distance after pipe

[offtrail]

Right now my current sled just has stingers coming off of the pipe. I want to put some glass packs on it to try and quiet the thing down. I have to alter and re-route the pipe tubes after the expansion chamber and some of them are going to be longer than the others. Just wondering if this will have any affect on performance. I don't think it should, cause I'm not altering the actual pipe length or the expansion chamber. What do you guys that know more than I do think?

 

[mattymac]

pipe diameter needs to be the same to retain the same amount of backpressure, just make sure your new silencer has the same ID at the supply, length between the exit cone/stinger outlet (at the pipe not the stinger/silencer itself) and silencer supply isnt very crucial since it would take alot of extra piping to have an adverse afect on airflow based on static pressure loss due to friction flow from extra length.


Sure the same length is better in a perfect world, try to get them close to the same length obviously, but if you have a few inches diffrence between the two youll never know the diffrence!

 

[Backcountry]

mattymac is spot on!

 

[offtrail]

Thanks guys! Thats kinda what I was thinking. But I don't have the knowledge that some of you have on here. So thanks for your help.

 

[mattymac]

heres a pic of the pipes I did on my 1200, I could have tucked the top pipe down more but only at the cost of not being able to change a mag spark plug, hotter EV cap, and easier to check my waterpump belt. It doesnt looks quite as nice but everything fits perfect and nothing melts!!!!!!! All 3 carbs runn the same mains, with an everso slightly change in pipe temp, but I ride without a hood most of the time and the PTO pipe really catches the cold air!

 

[dog breath]

You can check the length, diameter, etc with this two stroke pipe java software.
http://www.mh-aerotools.de/airfoils/javapipe_main_en.htm