Suspension, what's next? need help - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech Suspension, what's next? need help

Print Thread

Page 1 of 2

1

2

Suspension, what's next? need help #1347685 12/08/12 01:44 AM 12/08/12 01:44 AM
Joined: Sep 2012 Posts: 1,563 Janesville, WI SpareParts OP pro stock
SpareParts OP pro stock Joined: Sep 2012 Posts: 1,563 Janesville, WI	http://www.youtube.com/watch?v=SNR4ELAoM6o So Based on the little bit you can see of the leave what do I need to focus on now? basic rundown is, SS springs 2800lb solid eye bushings, /6 T bars,MP rear shocks, Calvert fronts, stock A arms and front susp. SS springs are clamped on every leaf (testing showed improvement) This car hooks but the 60' seems slow to me. You'll notice I gave up the win light (and a lil dough) but what's the first thing that comes to mind that you see needs a change? Thanks guys

Re: Suspension, what's next? need help [Re: SpareParts] #1347686 12/08/12 02:07 AM 12/08/12 02:07 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	The front lifts but the rear doesnt do anything... first would be rear shocks... get some adjustable ones and the rear tire pressure looks high

Re: Suspension, what's next? need help [Re: MR_P_BODY] #1347687 12/08/12 03:25 AM 12/08/12 03:25 AM
Joined: Sep 2012 Posts: 1,563 Janesville, WI SpareParts OP pro stock
SpareParts OP pro stock Joined: Sep 2012 Posts: 1,563 Janesville, WI	Quote: The front lifts but the rear doesnt do anything... first would be rear shocks... get some adjustable ones and the rear tire pressure looks high I would definitely agree on tire pressure, freezing cold night and I was worried about the car moving around up top so for stability I kept pressure in it to avoid pedaling. What's your take on the rancho/calvert adjustable rear shocks? Thanks much

Re: Suspension, what's next? need help [Re: SpareParts] #1347688 12/08/12 03:45 AM 12/08/12 03:45 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: The front lifts but the rear doesnt do anything... first would be rear shocks... get some adjustable ones and the rear tire pressure looks high I would definitely agree on tire pressure, freezing cold night and I was worried about the car moving around up top so for stability I kept pressure in it to avoid pedaling. What's your take on the rancho/calvert adjustable rear shocks? Thanks much The Rancho 9 way would be the MINIMUM... alot of guys use them with the Caltrac but they are IFFY with SS springs... but from your vid I would say to try them... you lacked any lift in the rear that you should get from SS springs... what gear are you running

Re: Suspension, what's next? need help [Re: MR_P_BODY] #1347689 12/08/12 03:57 AM 12/08/12 03:57 AM
Joined: Sep 2012 Posts: 1,563 Janesville, WI SpareParts OP pro stock
SpareParts OP pro stock Joined: Sep 2012 Posts: 1,563 Janesville, WI	4.30 gear, 28" tire. These shocks are probably two years old now going on three. Not sure how long they should last.

Re: Suspension, what's next? need help [Re: SpareParts] #1347690 12/08/12 09:29 AM 12/08/12 09:29 AM
Joined: Nov 2009 Posts: 2,177 ill D dennismopar73 top fuel
dennismopar73 top fuel D Joined: Nov 2009 Posts: 2,177 ill	Quote: 4.30 gear, 28" tire. These shocks are probably two years old now going on three. Not sure how long they should last. More info needed!! tq vert stall / flash, leave rpm tire pressure you are running now, and carb?

Re: Suspension, what's next? need help [Re: MR_P_BODY] #1347691 12/08/12 10:50 AM 12/08/12 10:50 AM
Joined: Mar 2010 Posts: 939 glendora, ca. D Deepockets super stock
Deepockets super stock D Joined: Mar 2010 Posts: 939 glendora, ca.	Quote: The front lifts but the rear doesnt do anything... first would be rear shocks... get some adjustable ones and the rear tire pressure looks high keep saving your lunch money and buy some nice rear shocks (double adj if poss) suspension tuning is vital. i'm with ya on that mr. P Last edited by deepockets; 12/08/12 10:53 AM.

Re: Suspension, what's next? need help [Re: Deepockets] #1347692 12/08/12 11:48 AM 12/08/12 11:48 AM
Joined: Apr 2007 Posts: 118 Ms. D Dartwizer member
Dartwizer member D Joined: Apr 2007 Posts: 118 Ms.	Are the springs in the stock location?

Re: Suspension, what's next? need help [Re: Dartwizer] #1347693 12/08/12 12:26 PM 12/08/12 12:26 PM
Joined: Sep 2012 Posts: 1,563 Janesville, WI SpareParts OP pro stock
SpareParts OP pro stock Joined: Sep 2012 Posts: 1,563 Janesville, WI	Converter is a 4800 leave at 3k foot brake, had 18psi in tires, 750 proform DP, springs are moved inboard. I have a set of ranchos on the shelf, ran out of season to try them though

Re: Suspension, what's next? need help [Re: SpareParts] #1347694 12/08/12 12:32 PM 12/08/12 12:32 PM
Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey J jamesc master
jamesc master J Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey	as mentioned you need to get body separation that's what slams the tires against the ground

Re: Suspension, what's next? need help [Re: SpareParts] #1347695 12/08/12 12:37 PM 12/08/12 12:37 PM
Joined: Jan 2003 Posts: 9,996 Frostbitefalls MN (Rocky&Bullw... gregsdart master
gregsdart master Joined: Jan 2003 Posts: 9,996 Frostbitefalls MN (Rocky&Bullw...	If you go to the roundy round section of an AFCO catalog there is a lot of info on rear shackles and the effect of different setups. Well worth reading. If you have no rear lift, I suspect you have too stiff of a set of SS springs, poor shackle setup, bind, or some or all of the above. Too stiff on the shocks could be a culprit, although with SS springs that is very hard to achieve due to their very high leverage. The only other thing I could think of is spin at the hit(I didn't watch the vid, so,,,,) I put a set of 002 and 003 springs on a 3300 lb Dart I am building and used stock shackles. It is stiff as all get out back there now. Not what I wanted. I should have bought the ones for a 2800 lb car instead. It is much better to have a low spring rate and control it with shocks and clamps than too stiff a spring, which can't be fixed without replacing them. 8..603 156 mph best, 2905 lbs 549, indy 572-13, alky

Re: Suspension, what's next? need help [Re: gregsdart] #1347696 12/08/12 12:51 PM 12/08/12 12:51 PM
Joined: Sep 2012 Posts: 1,563 Janesville, WI SpareParts OP pro stock
SpareParts OP pro stock Joined: Sep 2012 Posts: 1,563 Janesville, WI	I think in the spring I'll try and remove some of the clamps on the rear segment of the springs. I actually tried 002/003 springs this year but it would knock the tires right off on the prepped street. The 2800lb springs will pick the fronts on a decent concrete street after a proper burnout.

Re: Suspension, what's next? need help [Re: SpareParts] #1347697 12/08/12 01:21 PM 12/08/12 01:21 PM
Joined: Apr 2009 Posts: 3,415 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,415 Toronto	I'd let you try my used rancho 9 way's if my car wasn't in storage right now. I agree with some of the others though, most SS spring cars I have seen have LOTS of separation. I've never ran the SS springs, but I can't see a good set of adjustables NOT being a good investment- sure they might cost ya, but they are soo worth it. A set of strange D/A's is $250 each for the rear, but well worth the money...especially if your trying to get it to hook hard on the streets The tuneability is worth it imo

Re: Suspension, what's next? need help [Re: SpareParts] #1347698 12/08/12 01:34 PM 12/08/12 01:34 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Quote: I think in the spring I'll try and remove some of the clamps on the rear segment of the springs. I actually tried 002/003 springs this year but it would knock the tires right off on the prepped street. The 2800lb springs will pick the fronts on a decent concrete street after a proper burnout. My ss springs were always best with rear segments unclamped. Long drag shocks and or shock extensions. just a clamp 6" behind axle let them fan out on launch. with the cal tracs SS springs and 9 way adjustable was best with rear of springs unclamped and shocks at 7 for foot braking.

Re: Suspension, what's next? need help [Re: mshred] #1347699 12/08/12 01:34 PM 12/08/12 01:34 PM
Joined: Sep 2012 Posts: 1,563 Janesville, WI SpareParts OP pro stock
SpareParts OP pro stock Joined: Sep 2012 Posts: 1,563 Janesville, WI	Can't try much this year, tracks closed. There's always my other "track" but it's just plain old too cold here. I'm mainly looking for tips for next year so I have all winter to read up and hide money lol

Re: Suspension, what's next? need help [Re: SpareParts] #1347700 12/08/12 02:38 PM 12/08/12 02:38 PM
Joined: Jul 2006 Posts: 684 toronto 6 6PAK70CUDA mopar
6PAK70CUDA mopar 6 Joined: Jul 2006 Posts: 684 toronto	Rear segments should not be clamped and I agree with the earlier comment too be wary of too stiff a spring. That car needs body separation to plant the tires. Also, to get the suspension working you may try leaving at a lower RPM so the converter "flashes" off the line. You need that action of the rear axle housing trying to rotate which makes the front segment push the body up and as Newton said, every action has an equal and opposite reaction. I believe that will drop your sixty as long as you are hooking.

Re: Suspension, what's next? need help [Re: SpareParts] #1347701 12/08/12 03:19 PM 12/08/12 03:19 PM
Joined: Aug 2003 Posts: 43,163 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,163 Bend,OR USA	Look real closely at the rear shackle angles as already suggested. If yours are in the stock location you need to move the upper pivot point forwars to the front of the car so you have a 30 degree or more angle on the rar shackles when sitting still with the weight on the rear tires The rear shackles need to be able to move forward under acceleration to help lift the back of the car up so it pushes the rear tires into the ground If there almost straight up and own when sitting still they will swing forward past the staright up and down and start pulling the rear spring eye down 7494353-MVC-029S.JPG (28 downloads) Last edited by Cab_Burge; 12/08/12 03:25 PM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Suspension, what's next? need help [Re: SpareParts] #1347702 12/08/12 03:54 PM 12/08/12 03:54 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Can't try much this year, tracks closed. There's always my other "track" but it's just plain old too cold here. I'm mainly looking for tips for next year so I have all winter to read up and hide money lol TIP; I`d seriously consider getting out of the ice ages and throw some c-tracs and rancho 9-ways on that thing then start posting about new best`s instead of HELP. Been there...........no fun chasing your tail............ peace! 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Suspension, what's next? need help [Re: Thumperdart] #1347703 12/08/12 05:00 PM 12/08/12 05:00 PM
Joined: Sep 2012 Posts: 1,563 Janesville, WI SpareParts OP pro stock
SpareParts OP pro stock Joined: Sep 2012 Posts: 1,563 Janesville, WI	Shackle angle is fine, made sure I paid attention to that. Cal tracs will not be seen on this car for as long as I can avoid it. They make things easier but I'd rather do the homework and keep it spring only. Less is more approach is kinda what the car goes by.

Re: Suspension, what's next? need help [Re: SpareParts] #1347704 12/08/12 05:03 PM 12/08/12 05:03 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Shackle angle is fine, made sure I paid attention to that. Cal tracs will not be seen on this car for as long as I can avoid it. They make things easier but I'd rather do the homework and keep it spring only. Less is more approach is kinda what the car goes by. If that`s your thing, have at it........... 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Page 1 of 2

1

2

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1