FMF Exhaust Pipe Question

BigBlasterd

New Member
Jul 30, 2009
78
0
0
Illinois
The flange that connects to the pipe from the engine the expansion pipe dosent touch the engine it is about 1/2 an inch away and is tight around the flange. Is this normal?
 
When its leaking then you have an air leak (i assume leaning it out?)...... I could be wrong about that though, so let someone else answer....

Heres some quick pics.... I dont have any of it connected but trust me its tight on there!
 

Attachments

  • 100_2849.jpg
    100_2849.jpg
    91.6 KB · Views: 359
  • 100_2850.jpg
    100_2850.jpg
    90.9 KB · Views: 356
  • 100_2851.jpg
    100_2851.jpg
    64 KB · Views: 355
i dont have my camera with me right now and i got another question to. I was riding along and all the sudden i hear a POP just like a 4 stroke backfire and i let off the gas and it died and it now only has 30pounds of compression. Can u predict what happened and if it is going to cost me a fortune?
 
its time for a top end rebuild, most likely from running lean. has it been rejetted for the pipe? do you always warm it up before ripping on it?. get yourself a ratio rite mixing cup, makes life easy. you're looking at 200-250ish to put it back together the right way.
 
honestly idk because i didn't want to tear everything down but i guess now i dont have a choice=) i am almost positive it is because it ran really good before. What is the highest the stock cylinder can be bored to?
 
Hey I have an FMF system I bolted my flange then pushed the FMF pipe on onto it then used a spring and connected it to my frame so it holds tight. Did yours come with a spring??