Cat removal - The EASY way!

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Jul 17, 2012 | 06:41 PM

#11

Duracell

Stellar HDF Member

Joined: Oct 2007

Posts: 2,806

Likes: 1,754

From: New Bern NC

Quote:

Originally Posted by maryvillept

I would be worried about the cat stuff breaking loose and getting sucked up into the engine. I made sure mine was very clean. Looks like you had quite a bit of remaining junk. Not sure?

Exhaust=exit=outbound gases.

Nothing in the exhaust is going to enter the engine. That's why the air filter is on the intake side.

Jul 17, 2012 | 06:55 PM

#12

mfortkamp

Tourer

Joined: Nov 2010

Posts: 400

Likes: 10

From: Buckeye State

i wouldnt do weld it back together on the bike without taking the battery cables off and unhooking the ecm, radio, turn signal controls, speedo, tach, and anything electronic. Even if you put the ground clamp on the exhaust it still could put stray voltage though the system and fry somthing
I worked on a farm and welded some parts up on the combine. Got in the combine and the yield monitor and gps both got fried...

Jul 17, 2012 | 07:17 PM

#13

Smitty79

Road Master

Joined: Feb 2010

Posts: 880

Likes: 0

From: Houston, Texas

Cat removal is a must! Now, I took my header off but I guess there's more than one way to skin a cat!!!

Jul 17, 2012 | 07:27 PM

#14

vickers1

Road Warrior

Joined: Jun 2006

Posts: 1,993

Likes: 20

From: Southeast GA

Quote:

Originally Posted by Retrop

Did you have to get special dispensation from the EPA before you did this? What was their reaction?

Huh??

Jul 17, 2012 | 07:35 PM

#15

Matt0987

Road Captain

Joined: May 2011

Posts: 545

Likes: 5

From: California

Quote:

Originally Posted by maryvillept

I would be worried about the cat stuff breaking loose and getting sucked up into the engine. I made sure mine was very clean. Looks like you had quite a bit of remaining junk. Not sure?

The engine sucks in from the air cleaner and blows out the exhaust system. The excess debris would be blown out the back. Not sucked into the engine.

Jul 17, 2012 | 08:03 PM

#16

pontiac69

Outstanding HDF Member

Joined: Sep 2010

Posts: 2,357

Likes: 8

From: Pa

Man I wish you were my neighbor. Great right up

Jul 17, 2012 | 08:12 PM

#17

skratch

Seasoned HDF Member

Joined: Jan 2007

Posts: 20,616

Likes: 4,440

From: anacoco, la

Quote:

Originally Posted by Duracell

Exhaust=exit=outbound gases.

Nothing in the exhaust is going to enter the engine. That's why the air filter is on the intake side.

Quote:

Originally Posted by Matt0987

The engine sucks in from the air cleaner and blows out the exhaust system. The excess debris would be blown out the back. Not sucked into the engine.

not entirely true. there is a thing called reversion that could end up sucking some material through the exhaust valve. i can't really explain it very well, but it has to do with exhaust gas pulses. google it.

Jul 17, 2012 | 08:14 PM

#18

harleycharlie1992

Unofficial HDF Chaplain

Joined: Dec 2009

Posts: 21,149

Likes: 18,075

From: san diego

Quote:

Originally Posted by Retrop

Did you have to get special dispensation from the EPA before you did this? What was their reaction?

"we'll be over in the morning with our gas analyzer, some armed officers, 2 prosecutors, a federal judge, and the warden!!! along with a troupe of tree huggers!!!"

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Jul 17, 2012 | 08:42 PM

#19

Harlay Hawk

Advanced

Joined: Jun 2012

Posts: 50

Likes: 0

From: Chicago

Quote:

Originally Posted by maryvillept

I would be worried about the cat stuff breaking loose and getting sucked up into the engine. I made sure mine was very clean. Looks like you had quite a bit of remaining junk. Not sure?

Its a exhaust, there is no way the motor can suck pieces back up the air stream. If anything they will be pushed out the tail pipes.