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12-03-2007, 05:02 AM
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#1
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Member
Workhorse Chassis Owner
Join Date: Apr 2007
Location: Farmington Hills Michigan
Posts: 91
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Another item for discussion. I have a 2003 W22 with the 8.1L engine. The catalytic converters have been changed due to the recall. The question is ???? How many cells per inch in the Catalytic converter?? I am sure everyone will have the answer on the tip of thier tongue. I am trying to figure restriction vs flow. Many thanks. John - Tiffin Allegro Bay
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12-03-2007, 05:02 AM
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#2
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Member
Workhorse Chassis Owner
Join Date: Apr 2007
Location: Farmington Hills Michigan
Posts: 91
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Another item for discussion. I have a 2003 W22 with the 8.1L engine. The catalytic converters have been changed due to the recall. The question is ???? How many cells per inch in the Catalytic converter?? I am sure everyone will have the answer on the tip of thier tongue. I am trying to figure restriction vs flow. Many thanks. John - Tiffin Allegro Bay
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12-03-2007, 06:30 AM
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#3
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Senior Member
Join Date: Apr 2006
Location: The Great Pacific Northwet
Posts: 382
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John--
Not to worry. I just had one of my OE exhaust
cats replaced at the end of October. It had come apart internally and even so, holding up the old cat and looking through it, I could see daylight. BTW..I replaced mine with a "high flow" aftemarket cat and I could see through that one as well. To say that there is NO resriction in flow through the cats is wrong, but the Vortec runs best with SOME exhaust restriction. That is why, when you install a
high-flow exhaust system, the engine falls on its' collective face and has no bottom end....
__________________
Steady Eddie/1999 KSCA 3357/P12 Chassis/454 Vortec L-21
Allison transmisson
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12-03-2007, 12:35 PM
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#4
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2006
Location: Northwestern Montana
Posts: 3,513
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Steady Eddie:
John--
Not to worry. I just had one of my OE exhaust
cats replaced at the end of October. It had come apart internally and even so, holding up the old cat and looking through it, I could see daylight. BTW..I replaced mine with a "high flow" aftemarket cat and I could see through that one as well. To say that there is NO resriction in flow through the cats is wrong, but the Vortec runs best with SOME exhaust restriction. That is why, when you install a
high-flow exhaust system, the engine falls on its' collective face and has no bottom end.... </div></BLOCKQUOTE>
Mike Bronzini, how about the above statement, do you have any dyno figures for your exhaust systems? 
Dieselclacker
__________________
Dieselclacker
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12-04-2007, 02:30 AM
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#5
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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You should as know that there is a fuel enrichment parm just for the cat's. That's how GM keeps them cool and from burning up due to heat. This is probably part of the reason that your tail pipes are sooty.
__________________
Dale
AKA - Oemy
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12-04-2007, 02:54 AM
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#6
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Senior Member
Join Date: Dec 2004
Location: NE TX
Posts: 165
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What recall?? 
__________________
Richard and Annell
03 Dolphin 5355,W22, 02 Tracker 4x4,Brakebuddy
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12-04-2007, 03:52 AM
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#7
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Member
Workhorse Chassis Owner
Join Date: Apr 2007
Location: Farmington Hills Michigan
Posts: 91
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The recall is for emissions related incorrect Catalytic Converter. Campain #60401C dated October 2004. It appears that it is for the model year 2003 This involves VIN range 355763 through 372635. The part numbers W8001469 for the W22, W8001470 for the P32 and W8001507 for the W52. Happy Motoring John
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12-04-2007, 04:10 AM
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#8
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Senior Member
Join Date: Dec 2004
Location: NE TX
Posts: 165
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Thanks John, will check on the numbers, just remembered our 03 is on an 02 chassis. Richard
__________________
Richard and Annell
03 Dolphin 5355,W22, 02 Tracker 4x4,Brakebuddy
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12-21-2007, 05:11 AM
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#9
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Junior Member
Join Date: Oct 2003
Location: Gobles Mi U.S.A.
Posts: 13
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we went with recall. not because the cats were bad but they needed the the miles. well I got less. no cats. Ihave better.
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Billys Toy
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12-21-2007, 05:35 PM
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#10
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2004
Posts: 182
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Billy's Toy, what exactly does your post mean?
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12-22-2007, 03:25 AM
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#11
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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In my opinion, running a vehicle without catalytic converters is environmentally irresponsible.
Touring the USA as a recreational vehicle enthusiast makes it incumbent upon us to be conscientious about the the foot print that is left behind in the pursuit of enjoying the natural and other scenic wonders available to us in the great country. 
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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12-22-2007, 04:16 AM
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#12
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Community Moderator
Winnebago Owners Club Freightliner Owners Club
Join Date: Dec 2003
Location: Weyauwega, WI US
Posts: 8,715
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by DriVer:
In my opinion, running a vehicle without catalytic converters is environmentally irresponsible.
Touring the USA as a recreational vehicle enthusiast makes it incumbent upon us to be conscientious about the the foot print that is left behind in the pursuit of enjoying the natural and other scenic wonders available to us in the great country. </div></BLOCKQUOTE>
Driver;
I totally agree with you. I think you said it well.
Don
__________________
Don & Bev Morgan Weyauwega WI, 05 Itasca Horizon 40KD, 400 HP Cummins, Adopted by a great couple, Toad 07 Saturn Vue AWD, Air Force One, TST 510 TPMS, Mayor of Weyauwega 2007 - 2013, Waupaca Co Board Supervisor 2010 - 2014
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12-22-2007, 06:31 AM
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#13
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Senior Member
Join Date: Nov 2001
Location: Dalton Ma/Crystal River Fl
Posts: 574
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Fuel milage being what it is,touring the country in a rec vehicle is environmentally irresponsible, but we do it anyway.
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12-22-2007, 07:45 AM
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#14
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Senior Member
Workhorse Chassis Owner
Join Date: Apr 2005
Location: CA
Posts: 350
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Spoonman:
Fuel milage being what it is,touring the country in a rec vehicle is environmentally irresponsible, but we do it anyway. </div></BLOCKQUOTE>
I must say, I agree with you. Well stated.
__________________
04 Winnebago Adventurer 38R
Workhorse W22
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