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General Category >> Rubber Side Down! >> Exhaust Pipe
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Message started by Violent_Rage on 08/26/16 at 00:09:04

Title: Exhaust Pipe
Post by Violent_Rage on 08/26/16 at 00:09:04

This sounds strange to me!
I have two exhaust pipe, they are the same except for the connector.
The oldest is slightly shorter than the newest and the connector is completely different.
I'm looking for different item # on ronayers.com but there is only one in list: 14150-24B01.
Ideas?

Title: Re: Exhaust Pipe
Post by batman on 08/26/16 at 10:51:11

The pipe on the left is bone stock,the one on the right looks like it has been cut shorter and ground down to except an after market muffler.Be aware that header length does have a bearing on tuning, the header length for our motor is between 30 and 34 inches as I recall and I believe Suzuki set the stock at 32 " but you'll need to check "cause my brain ain't what it use to be!.....checked ....I was incorrect the stock length of the header is 30" and should be no shorter than 27"

Title: Re: Exhaust Pipe
Post by Kris01 on 08/26/16 at 13:12:08

But you can also tune for different RPMs with a different header length. However, would it really matter with a single cylinder and no collector? There's no scavenging from other cylinders. I'm just "spitballing" here but wouldn't the entire exhaust length be considered the header since diameter never really changes?

Title: Re: Exhaust Pipe
Post by batman on 08/26/16 at 13:45:22

KRIS,WHEN THE EXHAUST VALVE OPENS PRESSURE WAVE MOVE DOWN THE EXHAUST HEADER UNTIL THEY REACH THE MUFFLER THEN REVERSE TO GO UP THE HEADER AND HELP DRAG THE LAST OF THE EXHAUST GASES FROM THE CYLINDER BEFORE THE VALVE CLOSES SO THE HEADER LENGTH IS IMPORTANT ,THAT "S WHY STRAIGHT PIPES PERFORM SO BADLY,THE WAVE DOESN'T FORM UNTIL THE END OF THE TAILPIPE AND ARRIVES MUCH TO LATE AT THE TOP OF THE HEADER.

Title: Re: Exhaust Pipe
Post by Kris01 on 08/26/16 at 18:52:42

Oh yeah! I forgot the pulse reverses when it sees a larger diameter pipe. The larger diameter muffler inlet slows down the exhaust pulse causing a restriction (for lack of a better word) and reflects the pulse back toward the exhaust valve.