exhaust leak

[slowride06er]

I ran out of time and light. I took my sled apart due to a exhaust leak. All the do units appeared to be fine not sure where my leak was coming from I plan on removing my flex from block if I get done before sun is down tomorrow. I had three backfires on my sled on last trip of season all within less than 50 miles of where I was parked. It was not as bad as it was when I blew the head pipes and had to listen to the racket for day and a half of ridding back to are starting point. Both pipes were covered under yes around 5,000 miles don't really remember exactly. I replaced dunuts 2,500 miles ago or so not start of last season the season before in my fall maince. I will be replacing with copper this year. The question I have is should I be looking at the y pipes for leaks the clamps were still tight all the flanges appeared to be good but it failed the engine stall test with hands over tail pipes. Maybe I caught it in time maybe the donuts are just starting to go. Any ideas if or where I should look for a problem? What would you do or look for?

 

[hibshman25]

I have seen several mufflers that cracked around welds in the y section. Be sure to check them.

Flex pipes also crack and separate which then leaks.

 

[slowride06er]

Found one bad donut after I removed flex did a full inspection of exhaust could not find any bad spots think I caught it in time I will be giving barn of parts a call tomorrow to order some copper ones.

 

[HABS 1]

put copper ones in my sled few years ago from sledtoyz, replaced header pipes last week and they still look like new

 

[slowride06er]

How many miles do you estimate you have on them?

 

[HABS 1]

exactuly 5,500 kms

 

[HABS 1]

get these ones! dont get yamis update

 

[slowride06er]

Aftermarket copper it what I want to go with is this what you are referring to?

 

[HABS 1]

yes sledtoyz .com!i would get new clamp bolts though just in case one breaks or head gets sloppy! i had one break and i heated it with torches and had to wait for bolts until i could finish!

 

[slowride06er]

Its all apart and bolts are good last guy that worked on it put a very small amount of never seize on them it came apart like it should.

 

[HABS 1]

10-4

 

[stevieu1]

I replaced my donuts with copper and after the first ride I found a big crack in of my flex pipes. Cant wait to find out how much that's gonna cost me.