Shackles? (2 Viewers)

[copper]

I was looking at putting new shackles on my 69 fj40. I wanted to put the 2.5" longer ones to get a little more clearance. Are these going to work OK, I was going with a 6% shim with them. What are the pros and cons of longer shackles. Thanks

 

[camcruiser13]

uh






cough(search) cough

 

[John Smith]

6 deg. is a LOT of shim. Are you running a lift and if so brand and how much lift? Do you currently have stock shackles? Any driveline vibes with the current setup?

 

[copper]

I was looking on CCOT and they have the 6% shims for a 2.5" higher shackle. No there is no lift on the cruiser right now. And yes I did search first, but the questions I want answered were not where I could find them. What are the pros and cons of higher shackles? Thanks

 

[JJS]

I don't think you need shims. I have no shims with 2" springs and the caster is okay.

 

[my64fj40]

You need shims when you install longer shackles..


Pros - more lift..

Cons - not really any, unless you get really excessive with the length..

 

[copper]

Thanks for your info, so the longer shackles won't hurt anything else. I heard they will make the spring wear faster? Thanks,

 

[John Smith]

I have never heard of accelerated spring wear due to longer shackles. Measure your caster before and after the install of the new longer shackles and you will be able to tell how many degree shims you need. I bet 6 deg is going to be alot more than you need.

 

[IDave]

If you have spring sag to begin with, 2.5 inches might give you only 1 true inch of "lift". You may not need shims. I agree, measure the castor after the lift.

 

[copper]

And how is the best way to measure this?

 

[1phrogguy]

https://forum.ih8mud.com/showthread.php?t=5454&highlight=measure+castor

here is some info that may be useful to you.

 

[John Smith]

Magnetic angle finder. You should be able to buy one at any good HW store.

 

[copper]

Thanks, that helped