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Mazda Lowering Static \  do these rear bags look ok?

do these rear bags look ok?

Mazda Lowering Static Mazda Suspension Mazda Tech
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slammin91   +1y
i'll put some gussets under the bag bracket. when i had those notches off i noticed that they wern't even welded on the under side so i went ahead and welded both of them. so on my 4-link bars i noticed u can spin the eye at the end to make them shorter or longer. should i lenghten the top bars say 2 inches to start with? if the lower mount that sits on the top of the axle is not level would that help cause the bag to compress sideways? i'm not really sure what to do?

thanks
hex0rz   +1y
You should have done the whole setup yourself!

The link ends on your 4-link are adjustable, yes. The thing about adjusting the link ends is that if you only do 2 of them instead of all 4, you will be messing with the pinion angle. And if it is already set, you will worsen the situation. If you adjust all 4 in or out, you could have a driveshaft plunge problem. As well, if they are all not adjusted right if you did all 4 you could have a pinion angle problem.

It could work but you need to know what your pinion needs to be at and if your slip yoke on your driveshaft is too far out already. Since your lower bag brackets are slanted and not level in correlation to your pinion angle for ride height you still might have some deflection on the bag. But may be within tolerance.

You will need to check out 3 things first:
1. How far are the link ends threaded out of the bar already?
2. You need to find out what the pinion angle needs to be at for ride height.
3. How far is slip yoke out of the tailshaft of the tranny?

Something will have to move and if it pans out bad, you may have to cut something out for relocation.
slammin91   +1y
sounds good! i'll find out those 3 things. i know i should have done it, i wanted to but when i got all my air ride stuff i had nowhere to do it at so i had this guy do it. i know he's put air ride in a couple of cars and they didn't fall apart so i thought he new what he was doing. i did all the front myself along with the help from people on this site and it came out pretty good. should have done something differently with my shocks but oh well... next time.

how do i find out what my pinon angle should be at ride height? another stupid question...... what should my ride height be? do people just pick a height to drive at and call that there ride height? sorry for all the stupid questions but i have no idea. i'll do whatever it takes to make it right. i kind of like to redo stuff to a certin point cause i learn from it so if i have to change something it won't bug me so much long as it doesn't take forever. i live at a pretty small town at the coast and have never seen a bagged truck around here, so i'm pretty stoked to get it finished or at least done enough to drive it before summers over.

thanks.
slammin91   +1y
one last thing. when i do my mesuring for the slip yoke does it matter if truck is up or down?
unusualfabrication   +1y
Setting your truck up at ride height is just that, were you are going to be doing most of your driving at. Pick a height you feel comfortable drving at and, BAM, you got your ride height. Now on to setting up your pinion angle. Its going to be different from a one piece drive shaft to a two piece driveshaft and I could type it all out but I found a site that has a pretty good write up on it. has a great article on setting up your driveline. Read those four pages and you should be able to set up your driveline. When you measure the movement of your slip yoke what you are doing is making sure that the slip yoke isn't bottoming out in the back of the tranny or that during travel its not going to pull out of the back of the tranny, so there isn't a "check it up or down"answer. You need to check it though its range of motion. With the bag over axle setup I doubt that you have to worry about it pulling out but if you are trying to adjust your 4-link bars out you don't want to go to far. Also you want to make sure that the wheels will still be in the wheel opening of the bed once you get it back on the truck.
slammin91   +1y
thanks a bunch..... i'll read up on that and hopefully get some info back tomarrow.
hex0rz   +1y
slammin91   +1y
so i took some mesurments of how much lift i get all the way around. hopefully it isn't to bad. i my mesurments are to the lowest point on the crossmembers front and back.

front all the way down, back all the way up i get 1 1/2

back all the way down, front all the way up i get 4 3/4

if i set truck level i get 7 3/4 to bottom of the door wear it closes, mesuring 7 3/4 at back of door and 7 3/4 front of door. with this... front crossmember is 2 3/4 off ground back is 2 1/2 off ground. so i guess i would call this my ride height unless its to low?

on the truck now i have 17's with 40 series tires.
want to put 18's in front and 20's in back on a 35 series tire. so i should gain a little in height. i figured a 1/2" difference per tire size. i have some 18's here with 35 series tires and they are about 1/2" taller to center than my 17's. so in the back i'm hoping to get a 1 1/2 more lift with 20's. don't know if this matters or not but that was what i was thinking about when i extended my c notches.

thanks.
slammed83mazda   +1y
putting gussest on the underside of those notches isn't going to do shit honestly you would be wasting your time man. Considering the amount of force thats gonna be pushed onto those plates I really wouldn't even know how to tell you to try to gusset that. But it will bend, maybe not right away but over a period of time it will.
slammin91   +1y
how does the lift i'm getting look? is that about average or to low? sounds like my upper bag brackets are a problem. if i have to i'll redo the back, just want to try to get it rollin before summers over. if u guys were in my shoes what would u do?

thanks..