Racepak question

astikhossw · 11-28-2013, 10:45 PM

Hey guys this is my first time running a stocker and a car with a racepak and i need to know if on a racepak graph after a run if the driveshaft graph shows a spike during/after the shift if that indicates tire spin and if you see spikes down track on the RPM graph after the 2,3 shift if that indicates a high speed miss.Thanks just doing a little after the race troubleshooting.

Chad Rhodes · 11-28-2013, 11:16 PM

Quote:

Originally Posted by astikhossw

Hey guys this is my first time running a stocker and a car with a racepak and i need to know if on a racepak graph after a run if the driveshaft graph shows a spike during/after the shift if that indicates tire spin and if you see spikes down track on the RPM graph after the 2,3 shift if that indicates a high speed miss.Thanks just doing a little after the race troubleshooting.

Drive shaft spikes, or a jump followed by a plateau would be tire spin. Spikes or zig zags in the rpm can be several things; valve bounce, intake reversion, ignition issues, detonation, or a hole in the fuel cure to list a few.

Bill Grubbs · 11-29-2013, 09:54 AM

More than likely what you are seeing is the tire unwrapping/ wrapping up around the wheel (drive shaft).

voltdr · 11-29-2013, 12:02 PM

Which Racepak system are you using? If it has the accelerometer, you can use it to look at spin/hook issues also.

11-28-2013, 10:45 PM	#1
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 266 Likes: 2 Liked 20 Times in 9 Posts	Racepak question Hey guys this is my first time running a stocker and a car with a racepak and i need to know if on a racepak graph after a run if the driveshaft graph shows a spike during/after the shift if that indicates tire spin and if you see spikes down track on the RPM graph after the 2,3 shift if that indicates a high speed miss.Thanks just doing a little after the race troubleshooting. __________________ 7015 E/SA Sooner Storm

11-29-2013, 09:54 AM	#3
Bill Grubbs Member Join Date: Oct 2002 Location: Magnolia, Texas Posts: 414 Likes: 1 Liked 557 Times in 65 Posts	Re: Racepak question More than likely what you are seeing is the tire unwrapping/ wrapping up around the wheel (drive shaft).

11-29-2013, 12:02 PM	#4
voltdr Senior Member Join Date: Jan 2008 Location: Texas Posts: 705 Likes: 77 Liked 97 Times in 50 Posts	Re: Racepak question Which Racepak system are you using? If it has the accelerometer, you can use it to look at spin/hook issues also.