im looking for an answer i havent seen yet durning my search.. WHY why do the runner coil springs end up sagging... im looking to get back to level ( like most of us) however if i go and buy moog trw and the like replacement stock coils are they better then the factory ... worse ? under-rated. gonna sag again? i will be getting hd varible rate coils im just wondering why 901s and downey and the rest are "better" the others i can buy

 

The stock spring is not that heavy duty. People by nature used their runners like a truck and after awhile the spring gives out. It happens to all spring steel eventually. Here a pic difference of ome 901-HD's compaired to stock. I ordered my Old Man Emu's Torsion Bars and 901 Heavy Duty rear coils springs from 4X4 Connection.

 

same reason my grandma cant polevault, theyre old.

Any coil will start to sag after a certain amount of time, but newer ones will bring it back up.

 

NWrunner thats funny i dont care who ya are thats funny

 

seriously so rather then going to 901s which i dont have a problem with
do you know the measurement on 901s stock is 12.81 unloaded new! not used and abused like NWrunners grandma JK lol

 

Is that the metalurgic description of why spring steel gives way after time?

 

My old stock springs are 14.5" and there shot. I'd say the 901's are a little under 16". But they don't compress as much as the stock ones. Hence the 1.5" lift you get from them. That's 1.5" over new stock ones, If your runner is sagging now, it may raise it 3" from its cuurent position, it did mine.

Before


901HD's installed

 

right now im 33 1/2 inches to the center of the wheel well
901 give 1.5 over stock i thought they gave 2 and change of stock

 

They give that much on a sagged runner. My pics above show that the whole frame is now visible, about 3".

 

hmmm interesting im thinking i will go get the replacement coils from the local parts store they have trw lifetime warrenty hd varible rate springs for 68 a pair if i need more than that ill get spacers im thiniing that new coils to start with will give me a good idea of IF i want to go higher thanks guys