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Motor mount shims??? |
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JeepSaffer 
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Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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 Topic: Motor mount shims???Posted: 16 July 2018 at 11:43am |
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I have come across something that has been puzzling me for a while: motor mount shims. They seem to be available from various vendors looking to sell them, but I haven't come across them in the manuals. My '48 came to me without them, which of course means nothing. I did find this post about them on the forum. Not much conclusive info on what they are for or when they were needed. My questions: Under what circumstances were CJ2A's fitted with them? Did CJ2A's leave the factory with them? What was being achieved? OK, they lift the motor. But my motor seems to fit well (with fan and shroud) without them. So why put them in? If it was a constant, known problem, why not fix the problem by raising the frame brackets, or working them into the insulators, or adjusting the engine plate ears? Why were they removable, or at least sold separately? Other observations: There seems to be no information or procedures on the manuals on how to fit them, or what thicknesses achieve what result? There only seems to be one thickness available from vendors, unlike regular shims. More of a plate than a shim really. So does anyone know much about these, why they were used, what they achieved, why so few people have them and their motors seem to run just fine.... I'm interested!
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1948 CJ2A #204853 in South Africa
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Lee MN
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Joined: 13 Aug. 2008 Location: Harris, MN Status: Offline Points: 4950 |
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Posted: 16 July 2018 at 11:51am |
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The only place I have seen shims used is on a Ford GPW!, never on a 2A from the factory. I have noticed on some current front motor mounts I've replaced that they are slightly shorter than the originals, this can effect how the fan sits in the shroud and have made a shim to correct this.
Lee 
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LEE
44 GPW-The Perfected Willys 49 2A “If you wait, you only get older” 67 M715 American Made Rolling History |
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mbullism
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Posted: 16 July 2018 at 12:11pm |
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Is it possible there is another application with very similar though slightly shorter mounts? They could manufacture one mount for multiple applications, and supply (sell) a shim to make it work in certain applications to avoid having to make and inventory multiple parts... and they get to sell you shims
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Those who do not learn from history are doomed to repeat it... Welcome to 1930's Germany
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wadoyado
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Posted: 16 July 2018 at 12:37pm |
 Joe
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"It's unbelievable how much you don't know about the jeep you've been driving all your life" (Mickey Mantle paraphrase)
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JeepSaffer
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Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Posted: 16 July 2018 at 1:32pm |
That's interesting. So the rule on a CJ2A would kinda go like this: If your fan is not centred in the shroud you might need a shim to lift it, if it is centred (more or less) you're good to go. I wonder how many people currently have or use shims on their rigs, either home made or bought....?
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1948 CJ2A #204853 in South Africa
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JeepSaffer wrote: