Drivetrain Rear housing bushing question

limp

wrap a little cheese around it and its a done

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Aug 26, 2023

#1

• Aug 26, 2023

• #1

I am going to try to lower my rear end enough to " make " some brake lines for it.. Hoping to unbolt shocks then lower it all the way it will go... If its not enough I will remove the rear since I seem to LOVE doing things twice..
My question is if I lower it down, should I loosen up the bolts to the upper and lower control arms to prevent any binding in the bushings??
Thanks for any thoughts here....

 

AeroCoupe

lube between the nut and the face. I know my lubes

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#2

• Aug 27, 2023

• #2

If you have any control arms with rubber bushings the yes loosening the bolts will help.

 

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Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

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Aug 28, 2023

#3

• Aug 28, 2023

• #3

It's ideal, but I rarely see it done. I'll admit I have never done it myself with my uppers when I've changed ride height.


But those rubber bushings when torqued down do contribute to spring rate when they are bound up when lowering.

3-peice poly bushings on aftermarket arms do not require torquing at ride height.

 

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limp

wrap a little cheese around it and its a done

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#4

• Aug 28, 2023

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My uppers are new stock, while the lowers are steeda...

 

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AeroCoupe

lube between the nut and the face. I know my lubes

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#5

• Aug 28, 2023

• #5

You do not want poly bushing in the uppers as it will cause binding. MM has done a lot of engineering on this and recommend rubber on the UCA’s:

Upper Control Arms

 

limp

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Aug 28, 2023

#6

• Aug 28, 2023

• #6

AeroCoupe said:

You do not want poly bushing in the uppers as it will cause binding. MM has done a lot of engineering on this and recommend rubber on the UCA’s:

Upper Control Arms

Click to expand...

As said above I replaced the upper control arms with new, stock ones from MM.. They are rubber...

 

limp

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Sep 3, 2023

#7

• Sep 3, 2023

• #7

Next question. Loosened all of the bolts on the lower and upper control arms and have removed the lower shock bolt..
Can I lower the rear end down all the way it will go and leave it hanging from the control arms? Or should I raise it up a bit and put some supports under it?? I want the rear end as low as possible so I can hopefully bend and install new brake lines without removing it from the car.
thanks all...

 

AeroCoupe

lube between the nut and the face. I know my lubes

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#8

• Sep 3, 2023

• #8

Springs will fall out but yeah I’ve let mine come down like that before. I will say it was with the soft brake line disconnected from the hard line on the body. Watch your e-brake cables as well if you have them.

If you don’t want to disconnect the brake line you will need to support it so it doesn’t put stress on it.

 

limp

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#9

• Sep 3, 2023

• #9

AeroCoupe said:

Springs will fall out but yeah I’ve let mine come down like that before. I will say it was with the soft brake line disconnected from the hard line on the body. Watch your e-brake cables as well if you have them.

If you don’t want to disconnect the brake line you will need to support it so it doesn’t put stress on it.

Click to expand...

TY, new soft line going in as I am installing an 87 up brakeline set up .... I do need to confirm the e brake cables though....
thanks

 

Last edited: Sep 3, 2023