DISSECTED CAT

[Bob Denman]

Personally; I'm disappointed... :shocked:

The Title to this thread says "Dissected Cat"...

I was expecting a biology lesson! :roflblack:

 

[SPYD3R]

TOO LATE

Great job Dan. Did you take any heat readings before, I would like to see the difference after. I could bring my laser thermometer to a lunch ride and test a stock to the modified cat. My Spyder is still in the shop.

TOO LATE MIKE....
i couldn't find any1 that wanted it... so it's in the trash...
i just was curious as to the configuration of the INNERS... 2 pipes in, the exhaust bangs up against the back wall, does a 180 and passes thru the CAT, again bangs up against the front wall and finds it way into the outlet then off thru the muffler.... very simple... but I truly had to scratch me head on this one... i dissected a dozen RS mufflers... they all have the CAT installed at the very front of the muffler, as you can see here: ... why the RT's have the CAT as a seperate unit is rather odd, and costly to me... jmho...
Dan P
Easley, SC
SPYD3R

 

[robtdonna]

Dan,

What year RT did you dissect? If it was earlier than 2014, wondering if the design is same for the three cylinder?

 

[SPYD3R]

2010

Dan,

What year RT did you dissect? If it was earlier than 2014, wondering if the design is same for the three cylinder?

Rob;
it was a 2010.... and YES, there is a HUGE difference between the 2 cyl. and 3 cyl. CATs..... the 3 cyl. CAT has 1 pipe in & 1 pipe out.... a VERY simple pipe can be configured as a 'by-pass'... "how do i know" you ask.... because, last week i took a friend of mine with a 2014 RT-L to a friend of mine that owns a tire & muffler shop, and we had one configured... cost was around $50...
Dan

 

[jcthorne]

TOO LATE MIKE....i couldn't find any1 that wanted it... so it's in the trash...i just was curious as to the configuration of the INNERS... 2 pipes in, the exhaust bangs up against the back wall, does a 180 and passes thru the CAT, again bangs up against the front wall and finds it way into the outlet then off thru the muffler.... very simple... but I truly had to scratch me head on this one... i dissected a dozen RS mufflers... they all have the CAT installed at the very front of the muffler, as you can see here: View attachment 99245 View attachment 99246 ... why the RT's have the CAT as a seperate unit is rather odd, and costly to me... jmho...Dan PEasley, SCSPYD3R

It was redesigned for the RT because that muffler gets very hot right where the passenger's leg is located on an RT.

 

[robtdonna]

Great info, :clap:I see a winter project coming up. :yes:

Rob;
it was a 2010.... and YES, there is a HUGE difference between the 2 cyl. and 3 cyl. CATs..... the 3 cyl. CAT has 1 pipe in & 1 pipe out.... a VERY simple pipe can be configured as a 'by-pass'... "how do i know" you ask.... because, last week i took a friend of mine with a 2014 RT-L to a friend of mine that owns a tire & muffler shop, and we had one configured... cost was around $50...
Dan