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Author Topic:   4 link
jon0
Dirt Roller

Total posts: 8
posted November 08, 2004 07:12 PM  
I am switching to a 4 link from leaf springs.I am installing new mounts so i can put them where i want to.My question is.How long should the bars be and at what angles?

boas51
Dirt Maniac

Total posts: 190
posted November 08, 2004 07:32 PM  
varies widely.
i used 18" upper and 16" lower, seemed ok uppers adjustable from 10 to 20 degrees approx.
lowers -5 to 5 degrees.
my new chassis will use a 20" trailing arm for the 2 link, 16" lowers for the 4 link, 16" upper left, 18" upper right, and either 20" or 16" lower with a 20" upper for the z on the right.
most chassis are 15"-18" uppers with the lowers 2" shorter. 15-18 degrees on the uppers and level to -5 degrees on the lowers.

jon0
Dirt Roller

Total posts: 8
posted November 08, 2004 07:50 PM  
thank for the info

Ego Racing
Dirt Forum Champ
Total posts: 724
posted November 09, 2004 02:04 PM  
The uppers should be longer than the lowers or the rearsteer will kill you

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted November 09, 2004 04:45 PM  
The shorter the bars = quicker reaction. Might also want to try the short LR lower link by using a plug.

jon0
Dirt Roller

Total posts: 8
posted November 09, 2004 08:44 PM  
I was thinking about putting short ones on the left.Like 9 or 10 in.I'm kinda new to set ups and adjusting.I just dont want to get to complicated or make it not work.I've got an afco pullbar and was going to put the rr spring in back and lr in front.thanks for the input.

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted November 09, 2004 10:46 PM  
Put the LR spring behind and the RR in front. If your new to bar cars so to speak I suggest you try a 3-link before going head on into a 4-link. They are much simplier and more forgiving.If you run 3-link put both springs in front. On a 4-link if you "clamp" up the LR spring to the housing and not on the birdcage then put it in front of the diff. otherwise run it behind.

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