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Cored Exhaust

Started by Fox, February 20, 2009, 03:58:26 PM

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ScottRNelson

Quote from: SaltLick on February 26, 2009, 01:25:52 PM
so at that point once you get it back to two tubes its a full core or do you need to cut the tubes back til you get to the next sheet?
A full core removes both of the sheets as well as all of the tubes.  If they don't put anything back inside, it's awfully loud, and in my opinion, does not sound very good.  Some people prefer loud regardless of sound quality, but I'm not one of them.
Scott R. Nelson, 2001 XR650L, 2020 KTM 790 Adv R, Meridian, ID

SaltLick

dam at that point your pretty close to just having straight pipes.

ScottRNelson

Quote from: SaltLick on February 26, 2009, 01:58:12 PM
dam at that point your pretty close to just having straight pipes.
Except that straight pipes sound better.  Seriously.

But those who do it seem to at least feel the need to look like they have mufflers on their bikes.
Scott R. Nelson, 2001 XR650L, 2020 KTM 790 Adv R, Meridian, ID

booger

One could also fully core the cans and replace with straight perforated tubing fore to aft and pack with fiberglass. This is pretty much what Termis are. I have partially cored cans and they do sound quite good, and are loud but not obnoxious. Neighbor came running out of the house one morning to tell me how beautiful my bike sounded. How often does that happen.

I'm thinking of fully coring them out along these lines:   http://www.ducati-upnorth.com/tech/coringsr.php

I have the Termi kit with a midpipe yet I prefer the look of the stock mufflers. You could pick up another set of stock pipes pretty cheaply if you don't like what you've done.

Everybody got a plan 'till they get punched in the mouth - Mike Tyson

2001 M900Sie - sold
2006 S2R1000 - sold
2008 HM1100S - sold
2004 998 FE - $old
2007 S4RT
2007 Vespa LX50 aka "Slowey"
2008 BMW R1200 GSA

Scotzman

For those that ride with cored pipes, did you need to do anything else to keep it running smooth? Re-mapping or anything?

Thanks
"Get your haggis right here. Chopped heart and lungs boiled in a wee sheep's stomach.
Tastes as good as it sounds. Good for what ales you."

SaltLick

Quote from: Scotzman on April 20, 2009, 10:02:58 PM
For those that ride with cored pipes, did you need to do anything else to keep it running smooth? Re-mapping or anything?

Thanks

cant speak for anyone else, but i didnt have to do anything. Runs like it did when i had the Arrows on it.

Scotzman

Do you have a modded airbox and have you noticed any difference in fuel consumption?
"Get your haggis right here. Chopped heart and lungs boiled in a wee sheep's stomach.
Tastes as good as it sounds. Good for what ales you."

SaltLick

Quote from: Scotzman on April 21, 2009, 08:06:35 AM
Do you have a modded airbox and have you noticed any difference in fuel consumption?

No modded airbox.  No its the same as far as i can tell.