launch rpm with cal tracs - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech launch rpm with cal tracs

Print Thread

launch rpm with cal tracs #723108 06/13/10 04:43 PM 06/13/10 04:43 PM
Joined: Sep 2009 Posts: 39 ontario canada D dart443 OP member
dart443 OP member D Joined: Sep 2009 Posts: 39 ontario canada	68 dart with 440,foot braking launching at 2500 hooks than spins 4 to 5 feet out.Changed pre-load, shock settings,tire pressure to no change

Re: launch rpm with cal tracs [Re: dart443] #723109 06/13/10 04:54 PM 06/13/10 04:54 PM
Joined: May 2005 Posts: 84 NC B Badfish67 member
Badfish67 member B Joined: May 2005 Posts: 84 NC	Weird because i'm launching off the foot brake at 3200 on a 29.5 x 10.5 slick, shocks set on 5, 1/4 turn preload, and on 200 spray and no spin at all. 1967 Barracuda 360ci/727 9.723ET @139.44mph

Re: launch rpm with cal tracs [Re: dart443] #723110 06/13/10 06:48 PM 06/13/10 06:48 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	The "hook then spin" problem w/ my car went away when I reset my front suspection for 5"+ of extension from the static ride height, as per Calvert instructions were when I explained what the problem was. Hasn't done it once since.

Re: launch rpm with cal tracs [Re: BradH] #723111 06/13/10 08:56 PM 06/13/10 08:56 PM
Joined: Sep 2009 Posts: 39 ontario canada D dart443 OP member
dart443 OP member D Joined: Sep 2009 Posts: 39 ontario canada	captain,I have 5" of front travel with calvert front shocks

Re: launch rpm with cal tracs [Re: dart443] #723112 06/13/10 09:09 PM 06/13/10 09:09 PM
Joined: Dec 2005 Posts: 1,495 Shelby mi. J JAKE68 pro stock
JAKE68 pro stock J Joined: Dec 2005 Posts: 1,495 Shelby mi.	What rear spring and shock combo. sounds like hitting tire real hard and then unloading. What hole is the bar in? JAKES AUTOMOTIVE

Re: launch rpm with cal tracs [Re: JAKE68] #723113 06/13/10 09:32 PM 06/13/10 09:32 PM
Joined: Sep 2009 Posts: 39 ontario canada D dart443 OP member
dart443 OP member D Joined: Sep 2009 Posts: 39 ontario canada	Jake,rancho shocks set at 5,stock 6cyl leafs,bar in upper hole.

Re: launch rpm with cal tracs [Re: dart443] #723114 06/13/10 11:29 PM 06/13/10 11:29 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Try the lower hole and add 2 clicks more rebound damping to see if that keeps the "hop" under control better.

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

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1