Car is getting slower in 1/4
06-26-2011, 11:45 AM
#13
4th Gear Member
Join Date: Sep 2009
Location: NC
Posts: 1,481
Hmmm...
The thing that stands out to me are your 1/8 and 1/4 trap speeds. You are picking up 26mph on the back end, which is a lot. The 1/8 traps are low for a car trapping 107 in the 1/4. This indicates to me that you could trap even higher in the 1/4 with a better 1/8 pass. I'm wondering if your shifting is a factor...
The thing that stands out to me are your 1/8 and 1/4 trap speeds. You are picking up 26mph on the back end, which is a lot. The 1/8 traps are low for a car trapping 107 in the 1/4. This indicates to me that you could trap even higher in the 1/4 with a better 1/8 pass. I'm wondering if your shifting is a factor...
06-26-2011, 12:13 PM
#14
4th Gear Member
Join Date: Mar 2010
Location: GA
Posts: 1,232
Hmmm...
The thing that stands out to me are your 1/8 and 1/4 trap speeds. You are picking up 26mph on the back end, which is a lot. The 1/8 traps are low for a car trapping 107 in the 1/4. This indicates to me that you could trap even higher in the 1/4 with a better 1/8 pass. I'm wondering if your shifting is a factor...
The thing that stands out to me are your 1/8 and 1/4 trap speeds. You are picking up 26mph on the back end, which is a lot. The 1/8 traps are low for a car trapping 107 in the 1/4. This indicates to me that you could trap even higher in the 1/4 with a better 1/8 pass. I'm wondering if your shifting is a factor...
06-26-2011, 01:58 PM
#15
3rd Gear Member
Join Date: Aug 2007
Location: Tulsa, OK
Posts: 670
Your losing alot of momentum when you spin early in the run. When I used to run Nitto dr's I would spin alot on the 1-2 and 2-3 shifts. I switched to MT dr's and my et's dropped .2-.3 consistently with no other changes.
edit: I should add that my 60' times also improved, but even on my runs where my 60' times were the same as with the Nitto's my 1/4 et still improved by .2-.3
Last edited by tim2002gt; 06-26-2011 at 02:02 PM.
06-26-2011, 05:44 PM
#19
4th Gear Member
Join Date: Sep 2009
Location: NC
Posts: 1,481
A little wheel spin can negatively effect your ET, but can actually increase your trap speeds. I guess the question there is how much wheel spin is he experiencing?
No question in my mind that he can trap 108-109mph with a better 1/8 pass. I agree that ET Street Radials are superior in grip to Nittos. A good DR is a very good way to address excessive wheel spin.
No question in my mind that he can trap 108-109mph with a better 1/8 pass. I agree that ET Street Radials are superior in grip to Nittos. A good DR is a very good way to address excessive wheel spin.
06-26-2011, 06:57 PM
#20
I think it is my 1/8 mile also that is killing me. And my clutch is on it's way out maybe it is slipping in the lower gears and once it stops slipping after the 1/8 it is able to push me into the 107 traps. I did spin a little on me take off and 2nd gear change but I don't think enough to real kill my time plus my 60ft isn't that bad for being on street tires