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Old February 27th, 2012, 08:16 PM   #1
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Default Engine mounts

I have what may be a stupid question. I have a I-6 out if a Grand Cherokee. I'm replacing a 2.5L and will be moving the frame mounts forward. In researching ive seen a few people mention that the GC's engine brackets that bolt to the motor mounts are different than the YJs is this true? Is it as simple as finding the brackets from a 4.0 YJ?

I guess I want to make sure I'm not missing something and end ip welding the frame mount in a different spot because I have a GC engine and the bracket dictates this.
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Old February 27th, 2012, 10:16 PM   #2
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I know for a fact the XJ mounts are different than a YJ. They look nearly identical to look at them until you hold the two up next to each other, and the holes are drilled in different locations. With the wrong brackets my new 4.0 wouldn't bolt in. Took me a few minutes to figure out what was going on.

So it wouldn't surprise my if the ZJ ones are different. However if you are moving/welding the mounts in, you can always weld them in a slightly different location to compensate for the mount being slightly different.
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Old February 29th, 2012, 08:28 PM   #3
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The motor mount are definitely different between yj and zj. But i the 2.5L mounts will bolt to the 4.0L with a little trimming. Or you could look into aftermarket motor mounts like the brown dog mounts.

Last edited by treky67; February 29th, 2012 at 08:34 PM.
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