decatting stock headpipes

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Oct 23, 2013 | 01:28 PM

#11

rpking

Road Captain

Joined: Dec 2012

Posts: 696

Likes: 13

From: Creston, Ohio

Quote:

Originally Posted by 94ruck

I cut the pipe at each weld where the cat is located. i cut half way thru then cut across the top and bottom to make the door come completely off. (the pipe is elongated and i made the vertical cuts on the long side.). i used a die grinder and then migged it shut.

Yep This is what I did. Piece "O" cake

Oct 23, 2013 | 07:31 PM

#12

hardheaded

Seasoned HDF Member

Joined: Oct 2012

Posts: 11,224

Likes: 3,049

From: St.Louis Mo.

Quote:

Originally Posted by Webo

Could the drill method be done with the head pipe still on the bike?

no! would not want any debris getting in the engine.

Oct 23, 2013 | 07:33 PM

#13

hardheaded

Seasoned HDF Member

Joined: Oct 2012

Posts: 11,224

Likes: 3,049

From: St.Louis Mo.

Quote:

Originally Posted by AAWAV

read up on this on the forums last nite - as I got pipe of the bike anyway, it is worth a try to drill out right?
might try some different tools as well to complement the "drill method". thinking about welding a larger grinding ball to a rod to get to the areas I cannot get with the spade wood drill... also got some older wood rasp bits laying around.
Will post results (in another thread - were the debate/debacle is/was going on regarding drilling or cut/weld method).

you got the hard part done,getting the pipe off the bike. $10 for a drill bit and get it over with.

Oct 23, 2013 | 07:43 PM

#14

TUCCI

Extreme HDF Member

Joined: Jun 2011

Posts: 10,216

Likes: 224

From: Glendale AZ

Quote:

Originally Posted by AAWAV

Got my second (catted) pipes in - picked up on the forum.
Keeping stock head pipes on the attic...
Want to decat myself (probably have a friend close it up again as I am not a great welder).
Anyone can point me to pictures how to cut the window? I have been digging around for hours but no pics. Saw some notes on 3 and 1/2 cut... does this mean cut 1 line half into the pipe (depth) so you can fold it open like a door?

how big does the "door" need to be to clean out the cat?

thanks

About this big, don't do it half assed clean it out real good till there's nothing left of the honey comb.....the header in the pic is for sale.