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10-03-2009, 07:54 AM
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#1
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2009
Posts: 125
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Does anyone know what improvements or changes workhorse has made to the chassis in the say last 6 yrs? How about the 8.1 engine?
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10-03-2009, 08:34 AM
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#2
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Senior Member
Workhorse Chassis Owner Winnebago Owners Club
Join Date: Oct 2002
Location: Way down yonder, below New Orleans
Posts: 3,958
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Which Chassis??
The 8.1 was changed to a returnless fuel system in 2004, hence the "new" fuel filter.
ED
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Itasca SC 2010 37F on W-24 WB248" stock + plug wires vent kit added.
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10-03-2009, 08:59 AM
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#3
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Senior Member
Workhorse Chassis Owner Monaco Owners Club
Join Date: Jun 2008
Location: Glendora Ca.
Posts: 822
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5 speed to 6 speed allison.
Mike
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10-03-2009, 09:42 AM
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#4
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2003
Location: Full Timer - Sioux Falls, SD
Posts: 1,935
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The 2 inch front stabilizer bar was changed to a 2.5 inch bar which really improved the resistance to side to side sway.
My 2004 model year motor home has a 2003 chassis. It had the 2 inch bar and I think they made the change sometime in 2004 or 2005.
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Clay WA5NMR - Fulltiming- 2004 Winnebago Sightseer 35N Workhorse chassis. Honda Accord toad.
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10-03-2009, 09:58 AM
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#5
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iRV2 Marketing
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 20,566
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The steering cut went from 47 degrees to 50 degrees. Bilstein shocks were added. There have been no major modifications to the 8.1L engine. The specification remains the same.
A new cool pack was introduced which negated the need for the 2 auxiliary cooling fans.
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10-03-2009, 12:25 PM
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#6
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2009
Posts: 125
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w22
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10-03-2009, 03:08 PM
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#7
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iRV2 Marketing
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 20,566
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Quote:
Originally Posted by lakewoodpaul
w22
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Yes, Did you have an additional comment or question? I believe we just about hit on all the items that you were looking for.
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10-03-2009, 04:45 PM
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#8
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Senior Member
Workhorse Chassis Owner
Join Date: Feb 2008
Location: The Thumb, MI
Posts: 276
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The W series rear suspension is equipped with an integral 2.5 inch rectangle stabilizer with steel to steel connection. for sure since late 2004 model year.
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2009 Safari Simba 34SBD, WH W22 GM 8.1L 6k Sterling tow bar, US Gear Unified Tow brake,98 Blazer 4wd, Remco Prop shaft, Alaska Tested 
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10-04-2009, 08:03 AM
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#9
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2003
Location: Full Timer - Sioux Falls, SD
Posts: 1,935
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Quote:
Originally Posted by gg
The W series rear suspension is equipped with an integral 2.5 inch rectangle stabilizer with steel to steel connection. for sure since late 2004 model year.
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The 2.5 inch rear stabilizer bar came on my 2003 chassis so it goes back at least that far.
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Clay WA5NMR - Fulltiming- 2004 Winnebago Sightseer 35N Workhorse chassis. Honda Accord toad.
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10-04-2009, 11:17 AM
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#10
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iRV2 Marketing
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 20,566
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I'll go further back than that ..... 
Every W20-W22 ever made since 2001 has always had a 2.5" rear stabilizer bar. 
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10-16-2009, 05:05 PM
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#11
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Senior Member
Workhorse Chassis Owner
Join Date: May 2004
Location: Park Ridge,IL
Posts: 113
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I also believe that GM's piston slap issue was rectified in most of their line of engines by 2005.
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2003 Dolphin LX 6342 8.1L W-22 chassis. Upgrades: Ultrapower,regapped plugs, Taylor wires, CAI, Koni shocks, Koni steering stabilizer, F&R trac bars, F&R IPD sway bars. US Gear for toad. 
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10-17-2009, 07:42 AM
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#12
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2009
Posts: 125
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Can you tell me more about the piston slap issue. wasnt aware of it. My current 03 8.1 is approaching 80k mi.
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10-17-2009, 08:47 AM
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#13
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iRV2 Marketing
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 20,566
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Quote:
Originally Posted by lakewoodpaul
Can you tell me more about the piston slap issue. wasn't aware of it. My current 03 8.1 is approaching 80k mi.
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I have 83,000+ miles and although I get a little rattling on startup after about a week of inactivity. Once everything gets warm and fuzzy the engine quiets right down. This has been an occurrence on my engine for quite a few years and I am not overly excited about it.
You can Google: "8.1L Piston Slap" and read all about it ....
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10-17-2009, 08:56 AM
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#14
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Senior Member
Workhorse Chassis Owner Monaco Owners Club
Join Date: Jun 2008
Location: Glendora Ca.
Posts: 822
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One of my pistons slapped it's self into oblivion at 18,000.
Mike
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