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Re: What's different 70-71 vs 72-74 Wiper motors [Re: moparmarks] #1142775
12/30/11 01:57 PM
12/30/11 01:57 PM
Joined: Aug 2007
Posts: 6,089
Valencia, España
NachoRT74 Offline
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NachoRT74  Offline
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Joined: Aug 2007
Posts: 6,089
Valencia, España
MaMopar made everything in misterious ways LOL


With a Charger born in Chrysler assembly plant in Valencia, Venezuela
Re: What's different 70-71 vs 72-74 Wiper motors [Re: BDW] #2132155
08/13/16 07:17 PM
08/13/16 07:17 PM
Joined: May 2010
Posts: 25
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Mike Roberge Offline
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Mike Roberge  Offline
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Can I use a readily available 2 speed ’72 Charger wiper motor to replace my near impossible to find 2 speed ’71 Charger wiper motor?
*I realize I could get my ’71 2 speed motor restored/repaired, but all I’m looking for is a basic parts store price and quality

*The ’72 wiper motor looks the same as my ‘71, but I am aware that the ’71 B body uses wiper crank/pin arm 2822290, whereas the ’72 Charger uses wiper crank/pin arm 3431553

When I look at pictures online of these two crank arms, they look virtually the same?
So my question is: will I be able to use/mount my 2822290 crank arm on the ’72 motor?


Michael Roberge '71 Charger R/T 440 4bbl, 500HP/500Ftlb Best ET: 11.590 120MPH
Re: What's different 70-71 vs 72-74 Wiper motors [Re: BDW] #2132398
08/14/16 01:00 AM
08/14/16 01:00 AM
Joined: May 2005
Posts: 4,679
Florida
BDW Online content OP
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BDW  Online Content OP
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Old post, but I ended up buying the 73 motor and it bolted up fine and is still working.
From memory the only difference was the size of the slot for the crank arm. I seem to remember the newer motor had a smaller shaft size (flat part). I cut a small shim and added it, but I honestly don't think it was needed.

Buy it local and try, if it doesn't work you can return it.

Re: What's different 70-71 vs 72-74 Wiper motors [Re: BDW] #2132522
08/14/16 09:31 AM
08/14/16 09:31 AM
Joined: May 2010
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Mike Roberge Offline
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Mike Roberge  Offline
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Posts: 25
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Originally Posted By cnxt
Old post, but I ended up buying the 73 motor and it bolted up fine and is still working.
From memory the only difference was the size of the slot for the crank arm. I seem to remember the newer motor had a smaller shaft size (flat part). I cut a small shim and added it, but I honestly don't think it was needed.

Buy it local and try, if it doesn't work you can return it.



cnxt,

Thanks for the info. My local parts store has one coming this week. It is a A1-Cardone re-manufactured unit, part# 40-382. It crosses to ’72 Charger.

*After looking more closely at the 71 vs 72 crank arms – I agree- they look just slightly different, but nothing that a small modification (aka: like you mentioned: a possible shim) would make working fit.

I will post an update, after I try this conversion.

Thanks,
-miker71

* Attached pics: photos of the ’71 (2822290) and ’72 (3431553) crank arms *

2822290 2spd 71charger crank arm.PNG3431553 2spd 72charger crank arm.PNG
Last edited by Mike Roberge; 08/14/16 09:52 AM.

Michael Roberge '71 Charger R/T 440 4bbl, 500HP/500Ftlb Best ET: 11.590 120MPH
Re: What's different 70-71 vs 72-74 Wiper motors [Re: BDW] #2153580
09/13/16 11:14 AM
09/13/16 11:14 AM
Joined: May 2010
Posts: 25
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Mike Roberge Offline
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Mike Roberge  Offline
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Joined: May 2010
Posts: 25
VT
Update for ’70 & ‘71 E-body, and ’71 B-body 2-Speed Wiper motor replacement:

Like cnxt said, the readily available/affordable parts store ’72 Charger(’73 Challenger) wiper motor is a direct bolt in and the ’71 linkage crank arm will bolt up, but is a bit loose due to the ’72 motor has a smaller shaft.

For me, this resulted in sloppy wiper action: The wipers wouldn’t cover as much windshield, and the would not park properly(wouldn’t hide away completely) – due to the slop.
Also, the ’72 motor shaft Parks/stops in a slightly different position (*this probably also attributes to not parking in the correct position).

Upon further investigation I found out the ’72 Crank arm motor shaft rectangular cutout is at a different angle than the ’71 Crank arm.
So, I purchased a ’72 crank arm(pt#3431553) on eBay to go on my ’72 motor. It fits perfectly w/no slop. Now my wipers work perfectly and park perfectly, - like brand new!


Michael Roberge '71 Charger R/T 440 4bbl, 500HP/500Ftlb Best ET: 11.590 120MPH
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