Monroe air shocks

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Johnny71dusty

Johnny71dusty

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So I've gotten 3 sets for my duster over a year . They all leak down . They all claim 80-150 psi . No shops I've been to , my compressor , no gas station can get 150 psi to end of the line to even come close to 150 psi .

Why do they make them 80-150 if 150 is not actually possible ? I need air shocks to get me clearance for my 275/60/15 to clear so if they aren't at least half way jacked up they hit
 
Drop by my shop and I'll pump them to 175 for ya off the main hose. I can also use my strut pump and put 450 or so in if you'd like!
 
What kind of crappy air shocks are you running?

Monroe air shocks at Rockauto are the ones you need.

Rarely do they need over 60 psi to do the job, and they don't leak down.

Had a '69 Satellite with the same outter bag air shocks exactly same as the Monroe, never leaked down even after 50 years.

Resized_20190721_191121_2357.jpeg


Same Monroe, air shocks never leaked down.

☆☆☆☆☆
 
Every Monroe ones I've got for mopar cars say 80-150 psi .

But also one gotten 100 in them and they leak down over few weeks . And it's not the nuts or o rings as I've checked and re checked many times and had a shop check too . They just can't hold the pressure . They don't go flat but can't seem to handle 100 psi they leak down to like 75 and stop
 
Johnny71dusty said:
Every Monroe ones I've got for mopar cars say 80-150 psi .

But also one gotten 100 in them and they leak down over few weeks . And it's not the nuts or o rings as I've checked and re checked many times and had a shop check too . They just can't hold the pressure . They don't go flat but can't seem to handle 100 psi they leak down to like 75 and stop
Click to expand...

It's all in the plastic lines and the couplings, if you don't have good new O-rings in the couplings it ain't gonna hold.

The air shocks themselves hold well. Try a new line kit and soap bubble all the joints. you will see where they are leaking.

*****
 
They're all brand new . And thought same thing and replaced on 2 cars and Do same thing .
 
George Jets said:
It's all in the plastic lines and the couplings, if you don't have good new O-rings in the couplings it ain't gonna hold.

The air shocks themselves hold well. Try a new line kit and soap bubble all the joints. you will see where they are leaking.

*****
Click to expand...
Did all this - every time they leak down and I full back up to 100. I leak chec again and again . Nothing
 
Another note I don't have any shocks tee together . I always keep each shock separate for getting stance right and if leaks happens it doesn't effect both sides . Yet all shocks leak down about the same to about 75psi and never go flat
 
Sorry for your problems. Looks to me like crappy parts are now available. The White Monroe Matics were the good shocks. Looks like they have a lesser quality replacement to them. This is the whole thing with parts now-a-days. crap parts.

The White ones were the best made by monroe. Company probably got sold off and now...... well you know.

*****
 
I would get the right size wheels and tires on it and forget about the air shocks.
 
toolmanmike said:
I would get the right size wheels and tires on it and forget about the air shocks.
Click to expand...
Yeah, why do you need it up so high?

Here is a naturally sprung '67 Dart.

Although I have the 383 big block short leaf on the bottom of the stack that gave me a 2" lift without the air shocks.

Nice Stance.

Screenshot_20200712-020702_Gallery.jpg


This is like the perfect Tire to Quarter Panel alignment .

☆☆☆☆☆
 
Ditto on the band-aides. Put the proper offset rims on.
Airs hocks were never meant for permanent use or jacking up a vehicle.
When they were originally designed, they were intended to level the cars/trucks ride height under load, not jack the rear end up in the air.

"Old School Air
This story wouldn't be complete without mentioning load-carrying air shocks such as the Gabriel or Monroe air shock absorbers. These are designed as a supplemental overload spring, and work by adding air to an enclosed chamber much like the airbag overload springs. The benefit to this style air shock is it allows the use of a softer riding spring pack for your truck for road use, but then the shock can be aired up for your next trip to get a thousand pounds of gravel. One concern is how strong the stock shock mounts are for that added load as they are now being given stresses comparable to the spring mounts."

Level Up Your Towing Game With These Shock Absorbers Made For Towing
 
dare say all this works well enough and keeps lots of people happy
but a car is supposed to be supported on its springs.
money spent on a re-arch of what is there might be a better option
no idea about in the US but its about £150 at a truck spring place in the UK.
how much do the shocks and tubeing cost?

they heat em up, hit em with a massive hammer when supported across two anvils
heat again then quench when done

brutal but works

buy some zink sheet for $20, use yourr tins snips 1mm thick, run forward along the leaf to just beofre the clamp, to make your interleaves new plastics and lick of matt black you will wonder why you never did it years ago...

Dave
 
MoparLeo said:
Ditto on the band-aides. Put the proper offset rims on.
Airs hocks were never meant for permanent use or jacking up a vehicle.
When they were originally designed, they were intended to level the cars/trucks ride height under load, not jack the rear end up in the air.

"Old School Air
This story wouldn't be complete without mentioning load-carrying air shocks such as the Gabriel or Monroe air shock absorbers. These are designed as a supplemental overload spring, and work by adding air to an enclosed chamber much like the airbag overload springs. The benefit to this style air shock is it allows the use of a softer riding spring pack for your truck for road use, but then the shock can be aired up for your next trip to get a thousand pounds of gravel. One concern is how strong the stock shock mounts are for that added load as they are now being given stresses comparable to the spring mounts."

Level Up Your Towing Game With These Shock Absorbers Made For Towing
Click to expand...
They are best offset they make without making or buying custom insane expensive wheels . They 15x7 , 4.5 b space ralleys wheels . With 275/60/15s they clear I'm under normal conditions . Harsh turns , lot of weight in back they'll rub . also I want the stance . I like all my tire showing I don't want any rubber tucked front or back
 
Dave999 said:
dare say all this works well enough and keeps lots of people happy
but a car is supposed to be supported on its springs.
money spent on a re-arch of what is there might be a better option
no idea about in the US but its about £150 at a truck spring place in the UK.
how much do the shocks and tubeing cost?

they heat em up, hit em with a massive hammer when supported across two anvils
heat again then quench when done

brutal but works

buy some zink sheet for $20, use yourr tins snips 1mm thick, run forward along the leaf to just beofre the clamp, to make your interleaves new plastics and lick of matt black you will wonder why you never did it years ago...

Dave
Click to expand...
They brand new leafs . Stock height
 
Murray said:
Spray lines and fittings with soapy water and find the leaks.
Click to expand...
I've done this as well and replaced the lines . Mine lines are only 24" long each going into my trunk. It's got to be the shocks just can't handle that much psi like they claim . Also I've never been able to put 150 psi in them I got 115 once and 100 the other times as that's the max thr Firestone next to me can put out . Takes a few weeks and it's down to 75 again and basically at stock ride height
 
Still don't understand why you need so much pressure in them?

My '69 Satellite ran 30 to 40 psi for a nice little lift, and it did not ruin the ride.

Have put them on other people's cars, same 30 - 40 psi gave desired results.

_______

Now if you go with the Gabriel Hijackers with the outter cans for the bags, you can put more pressure in those.

But they have a terrible ride to them at any pressure, like rock hard feel every bump in the road.

That's why we quit using the Hijackers and went with the Monroe-Max, night and day difference in ride quality and only needed minimal pressure for desired results.

____________

You have too big of a tire on your Duster, and Dusters have huge wheel openings compared to the Darts.

So if you are rubbing a Duster, sure sign too much tire. (or you need more offset on your wheel to push it in closer to the leaf springs.)

Now if someone (like many have done) put a B Body 8 3/4 under your Duster, then your rear end is wider than the stock width A Body 8 3/4, and in turn is pushing your wheels and tires out closer to the quarter panels creating the rub.

☆☆☆☆☆
 
George Jets said:
Still don't understand why you need so much pressure in them?

My '69 Satellite ran 30 to 40 psi for a nice little lift, and it did not ruin the ride.

Have put them on other people's cars, same 30 - 40 psi gave desired results.

_______

Now if you go with the Gabriel Hijackers with the outter cans for the bags, you can put more pressure in those.

But they have a terrible ride to them at any pressure, like rock hard feel every bump in the road.

That's why we quit using the Hijackers and went with the Monroe-Max, night and day difference in ride quality and only needed minimal pressure for desired results.

____________

You have too big of a tire on your Duster, and Dusters have huge wheel openings compared to the Darts.

So if you are rubbing a Duster, sure sign too much tire. (or you need more offset on your wheel to push it in closer to the leaf springs.)

Now if someone (like many have done) put a B Body 8 3/4 under your Duster, then your rear end is wider than the stock width A Body 8 3/4, and in turn is pushing your wheels and tires out closer to the quarter panels.

☆☆☆☆☆
Click to expand...
Because that's what the say they need 80-150 psi .
 
Johnny71dusty said:
Because that's what the say they need 80-150 psi .
Click to expand...

does it say it needs that much or does it say something like inflate/deflate as needed up to 150psi?

i remember back in tbe day running air shocks on a big old 73 pontiac lemans and i was never even near 100psi on the shocks and i had them lifting the rear end quite a bit.

ho high ya trying to get the rear? pictures would be nice as a reference.
 
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