My Lexus IS-F now in the 11's (All Motor)!!!
10-30-10, 05:17 PM
#33
Actually, losing the 1 or 2 mph at the top end at the very end of the run doesn't do much perhaps but 1/100th of a second -- so not much of a loss. I think we need to focus on getting 1.6-1.7 second 60' times to get you into the mid 11s. Best way is to find less weight, more HP, rear diff to IS350 gears, or smaller diameter rear. I was actually thinking that if you were to really lower the rear tire pressure considerably, the compression of the sidewall will effectively give you an inch or two smaller tire so you'll have a better holeshot. I was going to test that on my next trip to the strip... It's not about traction but rather shorter ratio at startup. As you speed up, the tire should deform a little less giving you kind of a variable gear ratio that gets taller as you build speed. So perhaps going to the 17" rim with beefier tires would help. Ultimately, it would be really the best if we were able to launch at 3-4K RPM but we'll never see that day until someone figures out the TCU. 
10-31-10, 06:31 AM
#35
This is fantastic! I've been enjoying your updates and the extremely informative documentation of your runs. Congrats to you! This makes me want to slap a set of drag radials on mine and head to my local track! Only problem is I swore that this car would never see a dragstrip. 
11-01-10, 04:09 AM
#45
Thanks Brad and no I didn't get a chance to see what the car would do with the seat out. The plan was to run a few times first to see if I could get in the 11's and if I was close enough say a 12.0x I was going to pull it, but I didn't have to. 
If I was able to get a few more runs Friday night in I am certain with the cooling air, the car would have gone even faster.
If I was able to get a few more runs Friday night in I am certain with the cooling air, the car would have gone even faster.