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Motor plate vs Motor Mount

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Old 02-02-2007, 09:33 AM
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Default Motor plate vs Motor Mount

Whats the main reason guys switch to motor plates?
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Old 02-02-2007, 09:41 AM
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The motor plate makes for a stiffer mount. It also gives you a good place to mount accessories (Vacume Pumps, Dry Sump Tanks, Breathers, Remote Oil Filters, ect.)...

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Old 02-02-2007, 09:42 AM
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I know the mid plate is useful as a sheild to protect the starter/engine from clutch/flywheel/flexplate explosion.

As far as using them vs motor mounts, I dont know. Couldnt find any info so I ordered solid mounts.
Old 02-02-2007, 10:59 AM
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Where do most run there limiters to? Will the K-member be ok? Double or Single limiter?
Old 02-02-2007, 12:47 PM
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My '67 was still on stock motor mounts and after running it all year and plenty of 5 second 1/8 mile passes I found that one bolt had completely fell out into my diaper so I'm getting motor mounts here in a few weeks to prevent some of that flex.

Actually the one part I don't like about mounts in putting on fuel pump/Alternator/vacuum pump it gets crowded. My dad has a '70 Camaro and he is having a hard time getting an alternator to fit but his engine is set back and that's part of the problem.
Old 02-02-2007, 02:38 PM
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Traditional motor mounts can cause strain on the side of the block in high hp cars, sometimes leading to cracking around the bolt bosses. I have also seen signs of ring seal getting better when side mounts are removed on high hp engines.

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Old 02-02-2007, 02:56 PM
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Do you guys always use a mid plate when going to motor plates? Is it always needed? I want to run a motor plate setup on my car to gain room for a 4.5-5 inch down pipe but dont want to mess with a mid plate. I dont want to have to add spacers to the flexplate or have the verter snout extended and all that. If it is a "have too" kinda thing with the mid plate then I will stick with what I have and built a custom passenger side solid mount.
Old 02-02-2007, 04:08 PM
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We have ran cars without the mid plate, but prefer to use one when possible. If you need to lift in a wheelstand without a mid plate, the trans bellhousing may crack when you land.

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Old 02-02-2007, 04:17 PM
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Very true. My car is more of a street/Strip car with a big emphasis on track performance. It will probably see more roll races and weekend test 'n' tune nights than anything. I just wanna weigh my options out.
Old 02-02-2007, 04:22 PM
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Im not running a mid plate.. i dont like the idea of shiming converters, my freind did it once and it was bad news... real bad vibrations. and broken converter bolts..

im running a front plate, on BMR's polymounts on the k-member and a trans mount. this is a big block 4th gen f-body.

another word of advise ive collected is you cant solid mount everything. if you run the plates, dont solid mount the trans, apparently it will blow the trans case under High HP

all depends on your plans, if its just a street car with weekend track trips, i wouldnt run plates. all out trailored drag car.. plates.. solid mount setups get old on the street quick
Old 02-02-2007, 04:29 PM
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Its not really from a stand point of being an all out track car or needing the rigidity of the plate setup. It is strictly to gain more room on the passenger side of the engine to run a large down pipe for the turbo. Thats it. I just need more room.



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