chassis setup
#385099
07/24/09 02:02 PM
07/24/09 02:02 PM
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Joined: Jan 2005
Posts: 716
Indiana
65dragnet
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super stock
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OP
super stock
Joined: Jan 2005
Posts: 716
Indiana
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O K chassis guys give me some feedback please. Going to try my new back half 4-link tonight and I set it up from a computer program from Performance Trends. Give me your thoughts. Car weighs 3413 w/driver QA1 dbl adj. shocks, 14x32 slicks, 55/45 %lbs. front to rear, 117.5" wheelbase, Instant center heighth 12.5" ,instant center length 47.1" antisquat is 153.8% Four link bars are neutral ( no preload) Oh and 1* neg pinion angle. I probably missed something! Thanks for any input!!
E. Williams 65 Coronet 500 3400lbs w/d, 446, Indy EZ'S, A&A transbrake,Comp 650 lift cam, 6.50 @ 105 mph 1/8th 10.25 @ 130mph 1/4
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Post deleted by Defbob
[Re: mr2performance]
#385101
07/24/09 02:10 PM
07/24/09 02:10 PM
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Anonymous
Unregistered
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Anonymous
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Re: chassis setup
[Re: Mr 5 Speed]
#385105
07/24/09 02:54 PM
07/24/09 02:54 PM
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Joined: Jan 2005
Posts: 716
Indiana
65dragnet
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super stock
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OP
super stock
Joined: Jan 2005
Posts: 716
Indiana
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with my print out of the program how about; 60.7 instant center length and10.5" I.C. 100% antisquat This is as close as I can get on the car. top axle bracket top hole top frame bracket bottom hole. bottom axle bracket top hole and bottom frame bracket bottom hole and bottom bar is still inclined about 2 degrees
Last edited by 65dragnet; 07/24/09 03:34 PM.
E. Williams 65 Coronet 500 3400lbs w/d, 446, Indy EZ'S, A&A transbrake,Comp 650 lift cam, 6.50 @ 105 mph 1/8th 10.25 @ 130mph 1/4
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Re: chassis setup
[Re: Chassisman]
#385110
07/24/09 05:40 PM
07/24/09 05:40 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
42-45 out....4.5 to 5.5 up...bottom bar parallel to the ground...shocks...4 clicks from full stiff on comp and rebound...11.5 lbs of air....1/8 turn preload on top pass side bar(shorten bar 1/8 turn)..first adjustment...air pressure...but dont go below 10 lbs...makes sure to video then watch back...see if its hitting tire too hard...then tighten compression...It will take a lot of passes to sort it all out...only make small changes then run 2-3 passes with that change until you get the hang of it....write down EVER change and resulting 60ft....keeping a log keeps you from getting lost. 
thats pretty much how I set mine up
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Re: chassis setup
[Re: 65dragnet]
#385112
07/24/09 11:28 PM
07/24/09 11:28 PM
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Joined: Jan 2005
Posts: 716
Indiana
65dragnet
OP
super stock
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OP
super stock
Joined: Jan 2005
Posts: 716
Indiana
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I think most of my problems are that the guy that back halved my car set the chassis brackets too high in the car. I had to drop the front so much to level the car that my oil pan is about three inches from the ground and the rear is as high as I can get it.  I started another post with results of the test and tune. and yes I keep a log chassis man. Thanks guys I'm still lost , it goes straight though 
Last edited by 65dragnet; 07/24/09 11:43 PM.
E. Williams 65 Coronet 500 3400lbs w/d, 446, Indy EZ'S, A&A transbrake,Comp 650 lift cam, 6.50 @ 105 mph 1/8th 10.25 @ 130mph 1/4
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Re: chassis setup
[Re: 65dragnet]
#385114
07/25/09 11:34 AM
07/25/09 11:34 AM
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Joined: Mar 2003
Posts: 2,504
PA
moparacer
master
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master
Joined: Mar 2003
Posts: 2,504
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Is the bottom bar at least level with the ground, or is it running up hill?
Reason I asked is my car has the chassis brackets too high IMO and to get the correct ride height I had to raise the back via the shock mounts.
This made the bottom bar piont upwards and I had to raise the back of it on the rear up 1 hole to make it level.
Hated to do it, but had no choice.....
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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