Motor mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rabid · 06-07-2002, 06:47 PM

Any of you guys have problems with the bolt backing out of your motor mounts? I've had the drivers side bolt fall out twice in the last year. Nothing worse then blipping the throttle and feeling that "whump" when your engine jumps 3 inches up off the frame and crashes back.

RipMeyer · 06-07-2002, 06:51 PM

Never had one back out but have had a few broken mounts.

I hate that sound of the motor jumpin like that. scares the hell outta me

Big69C20 Toy · 06-07-2002, 07:05 PM

Never had any back out on me, that sucker must be vibing oddly. Perhaps use some loctite on those threads?

Rabid · 06-07-2002, 07:10 PM

LOL!! I just got back from the parking lot showing my buddy what an engine does when it has one bad motor mount. The look on his face when I put it in gear, put my foot on the brake, and touched the throttle. The engine rose up on one side a few inches and then touched back down when I let off.

aaaaaaahhh, the joys of these trucks.

misfits · 06-07-2002, 07:18 PM

My mounts broke too. I had to drill the hole out and weld a nut to the back of the plate and stick a bolt throught the whole thingso the motor wouldn't jump out. I would have replaced them but I was in a hurry trying to put my engine back in after having it rebuilt. Its worked like that for a few months now with no problems.

**Desert Rat** · 06-07-2002, 08:58 PM

there should be a flat thin metal piece with tabs on it that bends over the bolt head locking it in place. or possibly a worn mount threads or crusty .02 hardware store junk.

Chris Pullen · 06-07-2002, 09:19 PM

No never had that happen before. Try using lock washers, or if you already got one, try getting another on.

06-07-2002, 06:47 PM	#1
Rabid Registered User Join Date: May 2001 Location: Honolulu, HI Posts: 1,237	Motor mounts Any of you guys have problems with the bolt backing out of your motor mounts? I've had the drivers side bolt fall out twice in the last year. Nothing worse then blipping the throttle and feeling that "whump" when your engine jumps 3 inches up off the frame and crashes back.

06-07-2002, 07:05 PM	#3
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	Never had any back out on me, that sucker must be vibing oddly. Perhaps use some loctite on those threads? __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

06-07-2002, 09:19 PM	#7
Chris Pullen Registered User Join Date: Jun 2002 Location: Canada Posts: 19	Hmmmmmm No never had that happen before. Try using lock washers, or if you already got one, try getting another on.

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06-07-2002, 06:51 PM	#2
RipMeyer Registered User Join Date: Oct 2001 Location: Southern New Mexico Posts: 649	Never had one back out but have had a few broken mounts. I hate that sound of the motor jumpin like that. scares the hell outta me

06-07-2002, 07:10 PM	#4
Rabid Registered User Join Date: May 2001 Location: Honolulu, HI Posts: 1,237	LOL!! I just got back from the parking lot showing my buddy what an engine does when it has one bad motor mount. The look on his face when I put it in gear, put my foot on the brake, and touched the throttle. The engine rose up on one side a few inches and then touched back down when I let off. aaaaaaahhh, the joys of these trucks.

06-07-2002, 07:18 PM	#5
misfits Registered User Join Date: Feb 2001 Location: Sturgeon Bay , WI USA Posts: 375	My mounts broke too. I had to drill the hole out and weld a nut to the back of the plate and stick a bolt throught the whole thingso the motor wouldn't jump out. I would have replaced them but I was in a hurry trying to put my engine back in after having it rebuilt. Its worked like that for a few months now with no problems.

06-07-2002, 08:58 PM	#6
Desert Rat Senior Member Join Date: Dec 1999 Location: Darrington, Washington Posts: 3,963	there should be a flat thin metal piece with tabs on it that bends over the bolt head locking it in place. or possibly a worn mount threads or crusty .02 hardware store junk.



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