78 GMC Jimmy
1/2 ton status
So my fuel pump inlet hose keeps getting a leak in it right at the pump. I think the motor is moving and causing the pump to hit the frame. Is that a thing?
CK5
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Fuel leak... again....
- Thread starter 78 GMC Jimmy
- Start date
rampage
3/4 ton status
Have you checked your motor mounts? Use a crowbar under the mount and see how much it moves.
engine shouldn't be moving far enough to hit fuel pump on frame, better check your mounts.
78 GMC Jimmy
1/2 ton status
Ya, they are shot. The harmonic balancer is very close to the frame, and the mounts rubber parts look cracked and worn out. Is there an easy way to replace them? Is there a procedure? Will the headers get in the way?
I do not find them difficult, but that may not be true for everyone. I do recommend looking into the competition mounts ORD has, much better than factory.
Yes Headers may complicate things
Yes Headers may complicate things
78 GMC Jimmy
1/2 ton status
Looks like they are $10 each on Amazon or the local auto parts store. Installing them doesn't look fun. Might have to pull the headers, I don't know. I took a chance and use a pry bar to bend the fuel pump inlet tube upwards, so it will not hit the frame anymore. I thought it might destroy the pump, but it worked out OK. By backup plan was to install one of my spare electric fuel pumps, but I turned out to not be necessary. Still gotta replace the mounts though, this just buys me some time.
rampage
3/4 ton status
People on here have not had good luck with rubber mounts lasting for any amount of time, especially if you have an oil leak which will make them deteriorate even faster. Might want to do some research. 
78 GMC Jimmy
1/2 ton status
People on here have not had good luck with rubber mounts lasting for any amount of time, especially if you have an oil leak which will make them deteriorate even faster. Might want to do some research.
Cool. I could use something else, as long as its reasonably priced. What are people using, solid mounts?
rampage
3/4 ton status
As Wes pointed out, look into the poly mounts offered by ORD.
78 GMC Jimmy
1/2 ton status
ORD . com? ?
rampage
3/4 ton status
rampage
3/4 ton status
And just an FYI: Don’t go poking around looking at all the goodies they offer or you just might as well transfer your bank account to them. Just in and out. Get what you need and leave. 
78 GMC Jimmy
1/2 ton status
And just an FYI: Don’t go poking around looking at all the goodies they offer or you just might as well transfer your bank account to them. Just in and out. Get what you need and leave.
Thanks for the link.
Looks like good motor mounts. Probably increased vibration with a slightly crisper response. I would not spend $200 on a pair of motor mounts, but the pictures and concept are useful. I might be able to find an alternate version, modify mine, or make some. Seems like I could remove mine, burn the rubber out of them, and then replace the rubber with either a pour in self hardening flexible compound, or perhaps insert heavy duty rubber pieces and secure them with bolts or Permatex. What I would really like to do is figure out a way to shore up mine without removing them. For example, on cars with worn out sway bar bushings, they make a "thud thud thud" sound when you go over uneven terrain. The sway bar has play around the busing and it slaps back and fourth. Well, if you remove the U bracket around the bushing and install material between the bracket and the rubber, the slack is gone and the noise goes away. Or if you want get it done with no extra labor, you just run some wood screws through the side of the rubber bushing, and the same result is accomplished. Either way, the bushing rubber is pressed up against the sway bar, eliminating the noise. Maybe I could jack the motor up, and install nylon rods on either side of the rubber. That would allow the rubber to be flexible, but it would not longer rely on its own material strength to maintain the proper position. Basically shim up the rubber to where I want it to be.
Anyone of you guys ever seen that show "Junk Yard Wars"?
Each team has a junk yard, 5 or so contestants, and a huge workshop full of tools, welders, etc. They have maybe 10 hours to scrounge up a gas or diesel engine, get it running, build some sort of crazy machine buggy thing. Then they race them on an off-road course. If memory serves, each round had different rules. Sometimes they will need 4x4, be amphibious, have tracks, have legs, be able to take jumps, etc. Each course was different.
They fab'd stuff on the spot by the eat of their pants. Repurposing EVERYTHING. Hub cap steering wheels, metal wheels, iron pipe steering columns, windshield washer reservoir fuel tanks, thank kinda stuff.
This:
rampage
3/4 ton status
Junkyard Wars was a great show and many of us on here use to watch it. The fix you’re suggesting may be suitable for that show or a trail fix but as a long term fix I can not endorse that.
There are new inserts for the frame half of the mount. You have to drill the "rivet" to separate the mount.
Like these.
www.energysuspensionparts.com
Someone has them in rubber too, to lazy to search atm
Like these.
Motor Mount Inserts - Chevrolet K5 Blazer - 3.1121
Chevrolet K5 Blazer Tahoe C10 C1500 Pickup replacement Motor Mount Inserts made by Energy Suspension. 7 Year Warranty. Ships Immediately. Part Number 3.1121
Someone has them in rubber too, to lazy to search atm
78 GMC Jimmy
1/2 ton status
I hear ya. I would not either. I would not duct tape someone else's rig together, I would fix it properly. But this rig is a toy.
Google pic, but you get the idea:
There are new inserts for the frame half of the mount. You have to drill the "rivet" to separate the mount.
Like these.
Motor Mount Inserts - Chevrolet K5 Blazer - 3.1121
Chevrolet K5 Blazer Tahoe C10 C1500 Pickup replacement Motor Mount Inserts made by Energy Suspension. 7 Year Warranty. Ships Immediately. Part Number 3.1121
Someone has them in rubber too, to lazy to search atm
Cool, thanks man. I will look into this further.
I've run what Wes posted for a long time. As long as you get everything lined up, they should last forever. Not sure why they aren't selling as a pair, but I presume someone does. (For '85 K5 with SBC):
These too, but I can't speak to Prothane, never used their stuff: https://www.summitracing.com/parts/ptp-7-506-bl/make/chevrolet/model/k5-blazer/year/1985
I had terrible luck with the aftermarket rubber (pretty sure they were Anchor branded) failing in super short order, and it's not like I have some hot rod engine. Rubber dry-totted and fell apart incredibly fast.
These too, but I can't speak to Prothane, never used their stuff: https://www.summitracing.com/parts/ptp-7-506-bl/make/chevrolet/model/k5-blazer/year/1985
I had terrible luck with the aftermarket rubber (pretty sure they were Anchor branded) failing in super short order, and it's not like I have some hot rod engine. Rubber dry-totted and fell apart incredibly fast.
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78 GMC Jimmy
1/2 ton status
Thanks for the info.
I checked the links, watched some videos, read a bunch of reviews on various different motor mounts. Its looks like a difficult repair, and the negative reviews on some of the motor mounts is not encouraging. The labor of replacing them is the biggest drawback of doing anything with them. I think I will just try to reinforce mine for now. I think I will jack the motor up, and use PCV tube, bolts, large screws, or something else to insert into the mount along with some Permatex Gasket sealer. In theory, I could jack the motor up, spray the motor mounts thoroughly with Everclear to clean them, and then fill all areas of the clam shell with Permatex "The Right Stuff" gasket sealer, and let it dry for a week. That would probably make the most robust motor mount ever, aside from the aftermarket heavy duty ones that dont use rubber. I don't need it to be perfect, I just need it to work. If they do completely fail, then I will resume the search for a good motor mount. I sure don't want to replace them just to have them fail again a year later.
I put 3 sets of stock style in my truck. Finally spent the time to do it right and put the ORD mounts in. I have not had an issue for years. But as everyone on here knows, i baby my truck.
Let the picture whoring begin.
Let the picture whoring begin.
78 GMC Jimmy
1/2 ton status
Do the the mounts simply slide out of the bottom? Like, lift the motor a little with a cherry picker, take off the 3 lower bolts, take off the center bolt and slide it right out the bottom of the rig?
