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-   -   Popping & crackling after fitting a new can (http://forums.sv650.org/showthread.php?t=58535)

PoRk ChOp 21-03-05 02:05 PM

Popping & crackling after fitting a new can
 
On the over run my bike pops and crackles a bit :shock: Is it meant too? I cant find any leaks around the joints, I'm a little worried its gonna damage the bike :? Sounds great though 8)

Stef 21-03-05 02:12 PM

V-twins with open race cans tend to do this. :lol:

Nothing to worry about. The pops come from unburnt fuel that ignites in the exhaust line. Normally the baffle/cat eliminates this on road legal cans.

I've been told by friends that at night, when my can pops, there are flames spitting out of the exhaust. :twisted:

Spiderman 21-03-05 02:13 PM

What can did you put on it?

After fitiing my G-Force i noticed a good amount of popping (only minor, but sounds great) at various parts of the rev range and more pronounced when off the revs and the engine is slowing the bike.

But then that was part of the reason i chose G-Force as it does the same kinda thing on my mates Ninja.

PoRk ChOp 21-03-05 02:23 PM

Spidey - CCC Twin outlet with removable baffles (note:the baffles fell out before the can was fitted) It only happens when using the engine braking, I just wondered if this was meant to happen on the injected models.

wyrdness 21-03-05 02:23 PM

Popping on the over-run is pretty normal with aftermarket cans though, as Stef says, stock cans don't (except for the new Triumphs!), so it's a bit worrying if you're not used to it.

Stef 21-03-05 02:26 PM

Two Brothers X-metal

BillyC 21-03-05 02:33 PM

Pork,

The injection version of the 650 engine has a PAIR system attached to it. This stands for Pulsed Air Injection, and litterally introduces air into the exhaust gases - this allows unburnt fuel to ignite, usually down the exhaust, and now that you have a race can, you can hear it.

Usually the popping on the overrun is a sign of a leak in the exhaust system.

PoRk ChOp 21-03-05 02:37 PM

Quote:

Originally Posted by BillyC
Usually the popping on the overrun is a sign of a leak in the exhaust system.

Billy - Will this damage the bike?

BillyC 21-03-05 02:41 PM

Nope... it's all happening away from the mechanical parts of your bike. Always worth getting the mixture tuned, which will reduce the popping, and make things a little cleaner, but not something to worry about otherwise.

Just enjoy the noise!

Mervin 21-03-05 02:44 PM

I get plenty of pops and bangs from my twin Rene's.

No problems, just sounds cool.

PoRk ChOp 21-03-05 02:44 PM

Cheers mate, I'm a mechanical ****wit and always worry about these type of things :lol:

will 21-03-05 02:53 PM

Quote:

Originally Posted by Stef
there are flames spitting out of the exhaust. :twisted:

:D niiiiiiiice

Stef 21-03-05 02:57 PM

Quote:

Originally Posted by will
Quote:

Originally Posted by Stef
there are flames spitting out of the exhaust. :twisted:

:D niiiiiiiice

Get someone to follow you at night. I'll bet your Remus does it too. (provided the baffle fell out :lol: ).

I think it's a shame i can't see it myself and all my friends have I4's.

will 21-03-05 03:27 PM

Quote:

Originally Posted by Stef
Quote:

Originally Posted by will
Quote:

Originally Posted by Stef
there are flames spitting out of the exhaust. :twisted:

:D niiiiiiiice

Get someone to follow you at night. I'll bet your Remus does it too. (provided the baffle fell out :lol: ).

it does (or did) spit fire, although have just had the bike serviced and it has stopped banging on the overrun. may have been running too rich.

Stef 21-03-05 03:30 PM

It stopped when serviced ????

Did they fitted new spark plugs or did they do a remap ?

650newb 21-03-05 04:07 PM

ive got a G-force race can and mine only pops when the choke is on, and i can see flames everytime it pops, alright they dont come right out of the exhaust. is mine ok or have i got a problem?

The Wolf 21-03-05 10:10 PM

I have a G-Force race can which pops & bangs. Certainly hasnt affected performance and I get flames all the time! Dont think its too much to worry about.

:wink:

Sid Squid 21-03-05 10:14 PM

Re: Popping & crackling after fitting a new can
 
Quote:

Originally Posted by PoRk ChOp
On the over run my bike pops and crackles 8)

Yeah, cool innit. :lol:

PoRk ChOp 22-03-05 09:51 AM

Re: Popping & crackling after fitting a new can
 
Quote:

Originally Posted by Sid Squid
Quote:

Originally Posted by PoRk ChOp
On the over run my bike pops and crackles 8)

Yeah, cool innit. :lol:

Damn right it is 8) Coming in to work this morning was interesting, when I was filtering it was like the parting of the red sea :lol: and when I entered the Tyne Tunnel the noise was like thunder with the car behind about 50 meters back :wink:


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