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12-19-2021, 02:35 PM
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#1
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Winnebago Camper
Join Date: Aug 2016
Posts: 14
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Need manifolds for W22 chassis
I have a 2006 Sightseer on a W22 chassis that needs both manifolds. I have been advised that the manifolds are no longer being produced. I know I could spend $1,500 on a Banks header kit but given the age of the RV I am loath to spend that much when I just need manifolds.
Do any of y'all have any tips for finding manifolds? Is it possible to get them used? If so, where?
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12-19-2021, 03:34 PM
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#2
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Site Team
Join Date: Sep 2009
Location: Spring Branch, TX
Posts: 7,780
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Is it not just a Chevy 8.1L Vortec engine? Wouldn't any 2005 Chevy 8.1L exhaust manifold work on it? I say 2005 because usually the chassis is a model year older than the RV's manufacture.
Something like this: https://www.ebay.com/itm/164838722364
__________________
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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12-20-2021, 05:17 PM
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#3
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Winnebago Camper
Join Date: Aug 2016
Posts: 14
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Apparently not. I have tried a few sites and they all say the manifolds are not compatible. The only way to be sure would be to take the existing ones off and compare with new ones, which is not feasible.
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12-22-2021, 12:02 PM
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#5
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Winnebago Camper
Join Date: Aug 2016
Posts: 14
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Don't know
I can't tell without digging into the engine but the site this came from does not list the Workhorse W22 as available
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12-22-2021, 04:20 PM
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#6
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unclescratch
Join Date: Jul 2021
Location: NW AZ
Posts: 99
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Goodluck finding them, but RV wrecking yards may be a source. I am told they (almost exclusively) sell online.
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2003 Adventurer 33V Workhorse 22 8.1Vortec w/Allison 5-speed 19.5 wheels Toyo tires
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12-22-2021, 04:41 PM
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#7
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Site Team
Join Date: Sep 2009
Location: Spring Branch, TX
Posts: 7,780
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The two big RV graveyards are Colaw RV Salvage and Visone RV.
https://colawrvsalvage.com/
https://rvparts.visonerv.com/
But in my experience they want to sell an engine, not engine parts. Best of luck.
__________________
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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12-23-2021, 12:06 PM
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#8
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Site Team
Join Date: Sep 2009
Location: Spring Branch, TX
Posts: 7,780
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Have you posted your questions over on the Workhorse Chassis forum on IRV2?
That would reach a lot more people and surely some with direct experience.
Here's a link to the forum: https://www.irv2.com/forums/f22/
__________________
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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12-23-2021, 02:07 PM
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#9
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Winnebago Owner
Join Date: Dec 2017
Posts: 71
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hohokam,that link was for chevy kodiak truck manifolds,alot of workhorse stuff is obsolete,but who is to say they didn't use the chevy manifolds and re-number them?
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12-26-2021, 04:20 PM
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#10
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1996 Itasca 29Q
Join Date: Oct 2020
Location: Victoria, BC
Posts: 179
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Exhaust Manifold
Have a look at "Shorty headers" they are made to be a straight across exchange for cast iron headers. They are anywhere from $300 to $1500 depending on what you want IE: stainless steel, ceramic coated for less heat or plain steel! The Banks System is a kit with stainless pipes and a muffler.
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12-26-2021, 04:48 PM
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#12
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Winnebago Camper
Join Date: Nov 2004
Location: Williams Lake,BC Canada
Posts: 38
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Go for custom headers. You don't need the whole system BANKS HEADERS.
The power increase from 50 to 80 mph is unbelievable.
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2007 Triple E - Empress Elite - Freightliner
WH 22 owner for 7 years
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12-27-2021, 02:07 PM
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#14
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Winnebago Camper
Join Date: Aug 2016
Posts: 14
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Thanks. At that price the Banks would make more sense
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12-28-2021, 07:14 AM
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#15
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Winnebago Master
Join Date: Nov 2005
Posts: 1,520
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Quote:
Originally Posted by hohokam
Thanks. At that price the Banks would make more sense
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Unless you can find a full set made by DoorMan which tend to be half the cost of the GM.
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Neil V
2001 Winnebago Adventurer WFG35U
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12-28-2021, 10:39 AM
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#16
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Site Team
Join Date: Sep 2009
Location: Spring Branch, TX
Posts: 7,780
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Here's a link to the Dorman 2005 Workhourse Custom Chassis W22 exhaust header.
https://www.dormanproducts.com/gsear...t%2520Manifold
(even though you have a 2006 Motorhome your chassis is no doubt a 2005)
This part is available on Amazon and a number of Auto Parts stores. It's about $370 per side.
__________________
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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12-28-2021, 05:18 PM
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#17
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Winnebago Master
Join Date: Nov 2005
Posts: 1,520
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Quote:
Originally Posted by creativepart
Here's a link to the Dorman 2005 Workhourse Custom Chassis W22 exhaust header.
https://www.dormanproducts.com/gsear...t%2520Manifold
(even though you have a 2006 Motorhome your chassis is no doubt a 2005)
This part is available on Amazon and a number of Auto Parts stores. It's about $370 per side.
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The Doornan appear to be made of better materials than the GM and come with a Lifetime Warranty which increases their value. Getting more for less is a pretty sweet deal.
__________________
Neil V
2001 Winnebago Adventurer WFG35U
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