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Author Topic:   Trailing arms
ssr1st
Member
posted November 02, 2003 07:32 AM
well hear i go dont know much on them but ill give it a shot. i know a stock 4-link the top trailing arms are made to work aganst each other to stop the rear end from moving side to side without the use of a panhard bar and that a latemodel style 4-link will move side to side so they use a pan hard bar to stop it . my queston to you guys is if i where to change the top trailing arms angels but noth there derction what i mean is tip the trailings arms up and down not side to side will it cause my rear end to slop side to side and by doing this can i cause the car to gain forword bite ive read aticals on a latemodel style 4-link but none on a stock metric 4-link. my track rules state that i can move them up and down but not side to side because we canot run panhardbars but not 1 person has tryed this because they dont think it will work? any ifo would be great

Steve Jr


*EDIT* this is the rule.. OEM 4- link suspension, with stock mounting points and stock lower trailing arms, upper control arms may be modified to be adjustable on one end. *EDIT*

[This message has been edited by ssr1st (edited November 02, 2003).]

racer17j
Member
posted November 02, 2003 09:28 AM
we shorten our uppers all the time to get the proper pinion angle and arm angles


teamstertom
Member
posted November 02, 2003 10:51 AM
With the top arms,I believe it is about 1" from centerline of the existing hole to the centerline,which would be forward,of the new hole.

Any thoughts about that measurement?
I always weld hardened washers around the outside of the new holes...just for extra strength.


racer17j
Member
posted November 02, 2003 09:26 PM
it all depneds on the rear end and the chassis like we have guys running 12 bolts takes a different lenght then our metrics i run a stock metric rear and if i rember right it was like7/8 or 1 in and i weld washers on it also but if your running imca they won't let you falls into that no reinforcing suspention parts so check your rules before you do that


rico 08
Member
posted November 03, 2003 02:02 PM
The way i read your rules you can't change the mounting points you can adjust the length of the trailing arm for pinion angle,but moving the uppers up should give more anti-squat.I've never drove a car or seen one like that but a fast wissota type car had 15 degrees down on the right side and 20 degrees down on the left,that seems like a bunch but you could try for a little over stock and see if it helps.


ssr1st
Member
posted November 03, 2003 07:17 PM
it depends on how you read the rule i gusse
"upper control arms may be modified to be adjustable on one end" hmmmm adjustable they dont say how it can be adjustable you can move things up and down shorten langthen its all adjusting one end of the traling arm so its one of them grey areas that you read in between the lines lol. can you guys give me some more info on changing the angels and what it can do to the car thanks guys..


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