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Re: What's wrong with our Chassis?
[Re: Quicktree]
#444816
08/21/09 03:35 PM
08/21/09 03:35 PM
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Joined: May 2004
Posts: 2,864
IN
Irun5snd8th
master
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master
Joined: May 2004
Posts: 2,864
IN
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Take a real good look at everything. Get up there with some brake clean so you can find a crack if its there. Take the shocks off and inspect them or just swap them from one side to the other. If the shock is the problem it should do something very different switching sides although I would not think thats the safest method of testing. Anti roll bar will definitely help but there is no substitute for tying the chassis together with a cage.
AFCO, Rons Fuel Injection sponsored Dodge Challenger
Mention Street Lethal Motorsports
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Re: What's wrong with our Chassis?
[Re: Quicktree]
#444817
08/21/09 06:53 PM
08/21/09 06:53 PM
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Joined: Jul 2003
Posts: 577
Grand Rapids, MI
11secondC
mopar
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mopar
Joined: Jul 2003
Posts: 577
Grand Rapids, MI
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Quote:
didn't see how fast it was running but ti looks like it's making good HP.
8.0's @ 170+ @ 3400 lbs, I think its making some steam... 
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Re: What's wrong with our Chassis?
[Re: 11secondC]
#444818
08/21/09 07:45 PM
08/21/09 07:45 PM
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Joined: Jan 2003
Posts: 10,016
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,016
Frostbitefalls MN (Rocky&Bullw...
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One more vote for the antiroll. I had my car leaving on the right rear, it was twisting so violently it would rip the left rear off the track. Anti-roll, with some preload, much better! Picked up about .02 in the 60 fts as well.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: What's wrong with our Chassis?
[Re: 11secondC]
#444819
08/21/09 08:12 PM
08/21/09 08:12 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:
Quote:
didn't see how fast it was running but ti looks like it's making good HP.
8.0's @ 170+ @ 3400 lbs, I think its making some steam...
 
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Re: What's wrong with our Chassis?
[Re: 11secondC]
#444820
08/21/09 08:14 PM
08/21/09 08:14 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:
Quote:
didn't see how fast it was running but ti looks like it's making good HP.
8.0's @ 170+ @ 3400 lbs, I think its making some steam...
he's way over powering the poor strange shocks I bet.
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Re: What's wrong with our Chassis?
[Re: Quicktree]
#444821
08/21/09 09:44 PM
08/21/09 09:44 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Quote:
didn't see how fast it was running but ti looks like it's making good HP.
8.0's @ 170+ @ 3400 lbs, I think its making some steam...
he's way over powering the poor strange shocks I bet.
First thing ...it should have a anti-roll on any
4-link.... thats a must have
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Re: What's wrong with our Chassis?
[Re: MR_P_BODY]
#444822
08/21/09 09:48 PM
08/21/09 09:48 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:
Quote:
Quote:
Quote:
didn't see how fast it was running but ti looks like it's making good HP.
8.0's @ 170+ @ 3400 lbs, I think its making some steam...
he's way over powering the poor strange shocks I bet.
First thing ...it should have a anti-roll on any
4-link.... thats a must have
but I need you to come down and show me where I can put them on my challenger  there is no room anywhere 
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Re: What's wrong with our Chassis?
[Re: MR_P_BODY]
#444824
08/21/09 10:10 PM
08/21/09 10:10 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:
but I need you to come down and show me where I can put them on my challenger there is no room anywhere
Can you turn it around and run it on the rear(doesnt
matter)
tried everywhere at every angle, the huge truck rear (dana) takes all the room 
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Re: What's wrong with our Chassis?
[Re: MR_P_BODY]
#444825
08/21/09 10:13 PM
08/21/09 10:13 PM
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Joined: Feb 2004
Posts: 34,942
S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
Joined: Feb 2004
Posts: 34,942
S.E. South Dakota !
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Awesome car, always has been !!
In the other Vids you posted..It never did that ?
I will vote that something is broke, My friend here with a low 10-2nd 63 Dodge recently turned a Dana 60 tube and it acted kinda like that but, he is not working the kind of HP you are putting down !!
Please get it right before it scrapes the wall !!
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: What's wrong with our Chassis?
[Re: TS3303]
#444827
08/21/09 10:22 PM
08/21/09 10:22 PM
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Joined: Jun 2009
Posts: 705
Michigan
Hemiroid
super stock
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super stock
Joined: Jun 2009
Posts: 705
Michigan
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Quote:
an anti roll bar is not the answer only a bandaid for a chassis that is not rigid enough. There is something seriously wrong with the rear, shock, or chassis. on the video at 5:00 it is turning right before the tire makes one revolution and at 8:30 every time he got on the gas it drove right. The rear is moving in the car, the 4 link brackets are moving, the chassis is cracked, or an axle/spool problem, who knows maybe the right rear caliper is stuck (doubt it based on the down track actions). It should be going left with that much extra load on the right.
Watching the vids, as soon as he hits the throttle the right rear immediately dives. If you watch the first vid, you can see how extreme the movement is.
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Re: What's wrong with our Chassis?
[Re: Quicktree]
#444828
08/21/09 10:45 PM
08/21/09 10:45 PM
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Joined: Jan 2005
Posts: 2,540
Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Put a sway bar back there. You are getting "roll steer" from the massive torque you're engine makes fighting the weight of the car and the rear gear. Turbos will do that. Roll steer occurs because of unequal length upper/ lower bars on the 4lnk. As long as you allow the rear to roll(no sway bar) it will turn like that. On a car that heavy, with that much torque, no shock/spring adjustment will ever be enough. My car was not as extreme as yours in power, but it was heavier (3700lbs)with a 3.50 gear, and would do the EXACT same thing. The car would corkscrew and turn on the launch and on gear changes until I put a rear bar in it. After the bar the car was almost boring to drive, as it was extremely predictable and controlled. see a poor vid at HTTP://www.YOUTUBE.COM/WATCH?v=IR2DrlHDjeY
"use it 'till it breaks, replace as needed"
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Re: What's wrong with our Chassis?
[Re: TS3303]
#444830
08/21/09 11:00 PM
08/21/09 11:00 PM
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Joined: Feb 2009
Posts: 345
Arkansas
JoWeTu_6
enthusiast
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enthusiast
Joined: Feb 2009
Posts: 345
Arkansas
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Quote:
an anti roll bar is not the answer only a bandaid for a chassis that is not rigid enough. There is something seriously wrong with the rear, shock, or chassis. on the video at 5:00 it is turning right before the tire makes one revolution and at 8:30 every time he got on the gas it drove right. The rear is moving in the car, the 4 link brackets are moving, the chassis is cracked, or an axle/spool problem, who knows maybe the right rear caliper is stuck (doubt it based on the down track actions). It should be going left with that much extra load on the right.
Movement to the right is immediate. 
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Re: What's wrong with our Chassis?
[Re: JoWeTu_6]
#444831
08/21/09 11:21 PM
08/21/09 11:21 PM
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Joined: Jan 2005
Posts: 2,540
Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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It's turning right because the wheel base on the right is getting shorter from unequal length 4 link bars combined with roll rotation. A sway bar will correct the problem, assuming the bar length difference isn't to extreme.
Take the spring/shock out of the car, and set the housing roll angle where you see it in the video. I gaurantee you that the wheelbase on the right will get sorter when compared to the left. Nothing has to be broke for this to occur.
You could lengthen the upper bars to match the bottom, and it would steer much less, but it will still roll rotate without a sway bar.
"use it 'till it breaks, replace as needed"
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Re: What's wrong with our Chassis?
[Re: TRENDZ]
#444832
08/21/09 11:31 PM
08/21/09 11:31 PM
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Joined: Feb 2004
Posts: 34,942
S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
Joined: Feb 2004
Posts: 34,942
S.E. South Dakota !
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Ok, I'll buy that but.. the car DID work before and has put down some serious numbers earlier so, why now has things changed without something breaking ?
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: What's wrong with our Chassis?
[Re: TS3303]
#444834
08/22/09 08:46 AM
08/22/09 08:46 AM
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Joined: Jan 2005
Posts: 2,540
Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Good point about the car working before, although I don't think it ever was working as they hoped. There is a good chance that a shock is not functioning correctly. Like others have said, the shocks are being asked to do more than they can handle on this monster. I still say put a bar in it. I would definetly remove the springs and at the very least hand check the shocks. I would also put the same rate springs in the car, let the sway bar handle the twisting, and let the shocks and springs support the car and control the speed of reaction.
This is one of the coolest cars out there, it would be a shame to see it wrecked.
"use it 'till it breaks, replace as needed"
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go full stiff on the right rear shock and see what it does.
