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View Full Version : 2 of 3 motor mount bolts sheared off in engine block... help!!?!?!

Tim88XJ
July 28th, 2003, 06:45
Well, The jeep had been doing fine, no major mechanical problems in the past few months, made the 700mile trip to tellico and back no problem. But this morning when I got in it to start it up it was making a horrible noise.

I popped the hood the fan shroud was torn up, and the whole engine had shiffed a few inches. So I looked around a little, and noticed the passenger side engine mount wasn't even bolted to the block anymore. At first I thought the bolts all just backed out, but I got under neath it and looked. The two bottom bolts sheared flush off with the block. I think I might be able to drill into the lower one, but there def isn't enough room to drill the top one. Does this mean I am going to have to pull the engine? The engine is a rebuilt one with under 20k miles on it.

anyone have anything similar happen to thier jeep? what did you do? Let me know, Tim
mark91xjbeef
July 28th, 2003, 10:22
look in the archives of the past three weeks i remeber posting on this subject. this happened to mine as well.
mark91xjbeef
July 28th, 2003, 10:25
page seven under welding to engine block
Tim88XJ
July 28th, 2003, 15:51
well I was under there looking at them, and I happen to just put my thumb on the the bolt, and I was able to turn it with my thumb. I was able to get both of them out. So now all I have to do is get some new bolts and locktite. Anyone know what size/thread bolts I need? I can go pick them up from the hardware store. Thanks again, Tim
Eagle
July 28th, 2003, 17:22
If you could turn them out by hand, now you know why they broke -- the shop didn't tighten them up when they installed the engine.

Just take the broken ends to the store and match up the diameter and thread pitch.

Loctite is a good idea. I suggest blue -- red is for threads you don't ever expect to take apart again. Although I've never had an engine mount bolt come loose -- just be sure the new ones are correctly torqued down.
Tim88XJ
July 28th, 2003, 18:06
Well... I put the engine in, so I guess I am the only person to blame. I will be using grade 8 w/ locktite this time around. -Tim