Previous PB was 15.875 @ 87 mph

Mods: Intake / Y-Pipe / Cat-Back

Vehicle Weight: 3360lbs (w/driver, full trim interior, no spare or jack - Weighed on digital scale)

Tire/Wheel weight (combo): 55lbs each
Tire PSI: 30 front, 40 rear
Tranny: Automatic (Manual Shifting)

Only got 1 good run in before I started to lose alot of grip due to the Pro street bikes & Semi Pro dragsters & lack of track prep/cleanup. (Basically they let the Street cars run first before anyone, in which I only got one run in. Then the Street bikes went, followed by the Semi Pro dragsters. It went on like this all night, taking turns by class, and the track was total **** an hour later, after my 1st run.)

(Manual Shift, 2k rpm launch)

R/T - .258
60' - 2.354
330 - 6.594
1/8 - 9.995 @ 72.96 mph
1000 - 12.883
1/4 - 15.350 @ 91.20 mph

Think I could've squeezed out a 15.2, as I accidentally left my "economy" air on during the run, and plus I shifted a little too early from 1st to 2nd, than I should have.

I also believe I can cut the rotational mass of my tire/wheel combo in half, and prob get into the high 14's by a little more weight reduction.


Here are the rest of my runs, trying different techniques (Drop Resistor vs. Manual Shifting) and differ RPM launches, all back to back:

#2 - Drop Resistor, 2K RPM Launch - 15.507 @ 89.34
#3 - Drop Resistor, IDLE Launch - 15.611 @ 89.08
#4 - Manual Shift, IDLE Launch - 15.562 @ 90.67
#5 - Manual Shift, 1500 RPM Launch - 15.530 @ 90.08


Cant wait to get rid of these heavy *** 17" stock alloy rims and see what she can really do. Finding a new track might not hurt either.

Good or bad, thoughts are appreciated.

 

I'd say you could do better. Work on your 60's. I beleive you could break 14's with that current setup.

 

Keep in mind, my setup is 200lbs more than your car (100lbs=5whp) and I'm riding on 55lb EACH tire/wheel combo, atm.

When I drop some weight, I know I'll be in the 14's with this setup.

As for 60fts, I pulled a 2.3 on a bad track. Given the weight reduction and a good track, 2.1 sounds pretty doable.

 

thats pretty good, faster than my boy's SCed auto 4th gen with a VB mod........on 9psi pulley

 

He needs to change his knock sensor. lol

 

So the wheels on your car now wiegh more than what the car came with stock? Also I usually manually shift with my dr mod.

 

hmm.. times are kinda iffy, that should definately be 14's i did a PB 15.1 with just intake n catback 70+ degree weather SE 17's n full interior and constant 15.2's n 3's, like AJ said work on 60' though my best 60' was 2.2... ur setup should do 14.9-8

 

I talked to Jime about that before I made my runs, and didnt feel comfortable using both simultaneously not knowing if it had any adverse affects on the tranny or not.

 

Looking at the 15 sec timeslip database for 5th gen N/A 3.0's with similar setups, it looks like the average range for 60 ft's is 2.1-2.5 and run anywhere from 14.9-15.8's (Manuals & Auto's) with my current setup, or very similar.

There are just too many variables that people dont post that can make times drastically fluctuate; including weight, altitude, heat/humidity, tire/wheel combo, wind, tire pressure, heat dissipation, track prep, traction, ect, ect. Its not always about whp.

So to say that one setup to the next should run exactly the same or better based on mods, is not something I exactly agree with. The timeslip database clearly shows that.

Anyways, as stated in a previous post, I think most of my problem lies in weight (especially tire/wheel combo) and traction. Hopefully, with a few simple changes, I should be in the 14's pretty easily.

 

agreed.. but your only downfall here were slightly heavier rims, which plays a factor but you also have a Y-pipe, not to mention cooler temperature and you did the DRmod (which i fogot to do) ((oh n did i mention how my tranny drags gears and CEL for o2 censors???)) all im saying is i'd be kinda sceptic as to what going on or is there something wrong i really think its a lil more than weight, but hey your car nice times ..................... i've shifted manually everytime when i've drone the DRmod, nothing happens

 

Did you even read the post, or did you just look at the times?

As stated previously (several times), Weight, traction, and a very poorly maintained track all contributed in the factor of a 15.3, which isnt bad by the way.

And what do you mean by I had cooler temps? I never even stated the temps. In fact, if you look at the forcast for Cincinnati on Friday, Sept 26th, temps were 80 degrees and had a pretty high humidity.




And if you look closely, you'll see I had worse times with the DRmod, compared to manual shifting.

Oh, and my tranny drags gears also and I had a sticking caliper. As for o2 sensors being out, they wouldnt have any affect on 1/4 miles times.


And all im sayin is take a good look at the 15 sec timeslips database. You'll see, for my setup, Im right around average of where I should be. There's well over 30+ other 5th gen N/A 3.0's to compare to, and all run in the same area, with similar setups (even manuals). (Maybe your car has responded better to the mods)

And given the bad track prep, lack of traction throughout, and extra weight im carrying, its not hard to fathom why my PB time only added up to 15.3. Not to mention, so many other factors that can play a part, when comparing 1/4 mile times.

As for nothing happening with the DRMod and manually shifting simultaneously, it doesnt mean that you could be tearing up something, without knowing.

 

no arguments here beleive me, if you look at the 15 sec time slip for auto's youll see me sitting in second with intake and exhaust with the first guy bearly faster with IIRC I/Y/E... i dont know if a track is good or not, i just run on it ... not to mention Capitol raceway is not the best track around

 

Oh ok I've been doing it for 3 years now and my tranny is fine.

 

yeah i did it everytime in my 4th gen and nothing went bad, i think i've done it once in the fifth gen but didnt run any faster time