will gutting a pipe cause for a need in rejetting?

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will gutting a pipe cause for a need in rejetting?

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All Forums >> [OEM Discussions] >> Yamaha >> will gutting a pipe cause for a need in rejetting?

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will gutting a pipe cause for a need in rejetting? - 8/15/2008 8:45:39 AM

C1iffBurton

Posts: 4024
Joined: 10/24/2007
From: Moss Bluff, LA
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i started the process of gutting my pipe yesterday, got the spark arrestor knocked loose but not taken out yet, when i got to looking at it from the last baffle back to the end of the muffler there was tons of sand all around the spark arrestor that i then knocked out of that fitting in the bottom and so on, then i started to take the sawzall and cut the end of the muffler pipe off and got about 1/2-3/4 of the way through then my blade got bent from being to short...before i go any further will bashing out all of the baffles and taking the spark arrestor out cause for a need in rejetting? or will it just cause me to loose the back pressure?

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RE: will gutting a pipe cause for a need in rejetting? - 8/15/2008 9:02:43 AM

C1iffBurton

Posts: 4024
Joined: 10/24/2007
From: Moss Bluff, LA
Status: offline

i read a couple things that said id loose all back pressure and that would cause to need to rejet, what if i just take the spark arrestor out of the end of the pipe? and weld on my exhaust snorkel, would that not cause me to have to rejet?

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MINE*08 big bear 400, 27" skinny black love outlaws, CRSbear custom snorkel, Gumbo03 custom lift, oil cooler relocated, fan switch, audiopipe, viper 2500 max

--TEAM ANYTING GOES RACING--

R.I.P. JAYSON MATTHEW PARKER

(in reply to C1iffBurton)

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RE: will gutting a pipe cause for a need in rejetting? - 8/15/2008 9:44:25 AM

BB07

Posts: 380
Joined: 2/22/2007
From: Jupiter, Florida
Status: offline

It would be like putting a hmf on it ,except its going to sound like ****,most likely you will have to rejet.

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(in reply to C1iffBurton)

Post #: 3

RE: will gutting a pipe cause for a need in rejetting? - 8/15/2008 2:14:09 PM

KC_Kodiak

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Joined: 7/12/2004
From: KC Missouri
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Yes you will have to rejet.

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(in reply to BB07)

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RE: will gutting a pipe cause for a need in rejetting? - 8/15/2008 2:22:30 PM

REDNECK0731

Posts: 242
Joined: 1/23/2008
From: PEACHLAND N.C.
Status: offline

ANY TIME YOU CHANGE BACKPRESSURE YOU NEED TO REJET BUT KEEP IN MIND THE LESS BACKPRESSURS YOU HAVE THE LESS BOTTOM END YOU WILL HAVE BUT IT WILL HELP YOUR TOP END

SO YOU NEED TO DESIDE IF YOU BOTTOM END OR TOP END AND THEN REJET FROM THERE

IT WOULD BE BEST IF YOU PUT A AIR FILTER ( K&N, UNI, OR WHOEVER ) IF YOU HAVE NOT ALLREADY BECAUSE YOU GOT TO GET THE AIR IN THE MOTOR FRIST BEFORE IT CAN COME OUT

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