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#722061 - April 04th 2017 2:25 pm needed 75 dodge slant 6 motor mount straps  
Joined: Nov 2012
Posts: 813
OldReadingGus62 Offline
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READING ,PA

#722062 - April 04th 2017 3:33 pm Re: needed 75 dodge slant 6 motor mount straps [Re: OldReadingGus62]  
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Maniac
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Maniac

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Fircrest, WA
Interesting. In all my years of slant sixing and vanning I don't recall ever seeing those. I know that 1979 and 1983 vans with slants did not have those straps. I just checked the factory parts books. I wouldn't worry if those straps are missing.


Windows- they're what make a van worth owning!
#722089 - April 04th 2017 11:04 pm Re: needed 75 dodge slant 6 motor mount straps [Re: Reed]  
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OldReadingGus62 Offline
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READING ,PA
there a fail safe for broken motor mount ... long time reed, thanks


Greeting From Reading,PA....Found My First 70'S STREET VAN....Always Wanted One Since i Was a Teen But Could'nt Afford, Hope i Can Now LOL... It Was a Great Era To Grow Up In The Music,Cars,Parties
#722091 - April 05th 2017 12:41 am Re: needed 75 dodge slant 6 motor mount straps [Re: OldReadingGus62]  
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Maniac
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Fircrest, WA
Hi Gus! I think those straps are just Mopar overengineering that were deemed unnecessary after a few years of field testing. Like the left-hand thread lugnuts on the left side of cars that went away after Chrysler engineers noticed that the right-hand thread lugs on the left side of the competition's vejhicles weren't falling off.

Like I say, I have never seen them, never run them, and think you can just ignore them. If you are set on tracking some down, you can also look at trucks. At least the D series trucks used the same motor mounts as the vans.


Windows- they're what make a van worth owning!
#722092 - April 05th 2017 4:43 am Re: needed 75 dodge slant 6 motor mount straps [Re: OldReadingGus62]  
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Dundee, Michigan
OldReadingGus62, somewhere among my manuals I'd read that those were intended as grounding straps; the top and bottom of the rubber engine mounts were otherwise isolated from each other.

I was considering those for my 81 Dodge van a while ago too, but had decided to pass on them, at least till some proof that they'd genuinely be beneficial in my vintage of van.

I'd certainly think that the big crossmember attachment bolts to the chassis would have been an adequate ground, but perhaps the Engineers learned something from test drives which informed them otherwise. Were I to hazard a guess as to what, it may be that the impedance of the very small chassis ground to battery ground wire was too high and the total length of the ground path to the crossmember was excessively long, leading to radio frequency noise/static being generated/radiated from the front axle/bearings/springs. You can bet the Chrysler bean counters sure wouldn't spend a dime on development and procurement of a part, let alone two of them, if they weren't needed...

That being said, just as Reed said, I've never seen them in person either! Not sure whether they sheared off, corroded away, or if perhaps they were only installed as necessary, or were discontinued part way through the production run, such as if another fix were implemented elsewhere in the design of the van.

I think you'll most likely not notice any difference, unless you were to run some particularly noise-sensitive electronics like an AM radio or CB radio.

You've likely got a couple of bigger fish to fry elsewhere in your van; I'd say attend to the bigger fires first!

If you're determined though, I'd suggest looking into a more modern (and available!) alternative; the sort of braided, tinned ground straps which Summit Racing and Jegs sell. They are available in many different lengths, and are exceedingly flexible, weather resistant, and rugged. They could be attached between the engine mount bolts and the crossmember, to form a very low impedance electrical path.


-It's been such a LONG TIME... BlueShift>> 1981 Dodge Ram B250 Custom Sportsman Maxi Van


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#722113 - April 05th 2017 12:30 pm Re: needed 75 dodge slant 6 motor mount straps [Re: Reed]  
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OldReadingGus62 Offline
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READING ,PA
cool thanks..... just had the slant totally rebuilt , she's cleaned and pressed ready to be installed , body totally painted inside and out ...med blue metallic thanks again


Greeting From Reading,PA....Found My First 70'S STREET VAN....Always Wanted One Since i Was a Teen But Could'nt Afford, Hope i Can Now LOL... It Was a Great Era To Grow Up In The Music,Cars,Parties
#722114 - April 05th 2017 12:34 pm Re: needed 75 dodge slant 6 motor mount straps [Re: Ram4ever]  
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OldReadingGus62 Offline
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READING ,PA
thanks , figured for a couple bucks i could not go wrong finding them ...


Greeting From Reading,PA....Found My First 70'S STREET VAN....Always Wanted One Since i Was a Teen But Could'nt Afford, Hope i Can Now LOL... It Was a Great Era To Grow Up In The Music,Cars,Parties
#722122 - April 05th 2017 5:21 pm Re: needed 75 dodge slant 6 motor mount straps [Re: OldReadingGus62]  
Joined: Aug 2001
Posts: 11,348
Reed Online content
Maniac
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Maniac

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Fircrest, WA
I think your best bet would be to find part numbers and go to NOS parts dealers like Old Car Parts Noprthwest or Arizona Parts. Good luck!


Windows- they're what make a van worth owning!

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