1/8 times struggling in auto 3.0
07-09-2010, 09:48 PM
#1
1/8 times struggling in auto 3.0
I went to the track today to tune. to me my times were crap. i have spacers short ram and a y-pipe done. and i am running:
10.5 second avg 1/8 mile times
trapping between 69 and 71
60ft:2.6 - 2.7
r/t: under .5
I have been practicing my launches but with the tune im not seeing much of a difference. I have g35 18's on my car w/ 245/40/18 on front.
is there any advice on what i should do cuz there are civic si's mossing me. its depressing.
i have tried rolling out the line and stepping on it but still crappy launches.
and no cels are being thrown
10.5 second avg 1/8 mile times
trapping between 69 and 71
60ft:2.6 - 2.7
r/t: under .5
I have been practicing my launches but with the tune im not seeing much of a difference. I have g35 18's on my car w/ 245/40/18 on front.
is there any advice on what i should do cuz there are civic si's mossing me. its depressing.
i have tried rolling out the line and stepping on it but still crappy launches.
and no cels are being thrown
07-10-2010, 06:52 AM
#2
Can't go to the track like that and expect any PB's I don't really see anything that should've made ur times better as you've probebly added more weight than power.... good try though, keep at it, practise makes perfect
Last edited by Grand_hustle17; 07-10-2010 at 09:08 AM.
07-10-2010, 09:47 AM
#5
Junior Member
Join Date: Jan 2002
Posts: 56
Have you tried just easing out from the line and see if that helps you lower your 60ft? Riding out from the line like I would a normal traffic light, usually gets me a 2.2x (all season tires), if I try to accelerate out of the line and waste time spinning I get a 2.4,2.5 or even worse. Although you practiced launching your 60ft is still too high--are you spinning terribly at the line, or wheel hopping? Still running on the motor mounts that came with the car?
Good luck.
Good luck.
07-11-2010, 10:13 PM
#10
i only ran an 1/8th i have the car on eibach/illumina setup and falken 912 tires all around. but i did leave the 2 tens in the trunk. but i thought i could break 10 seconds. there was an altima ser running 9.5 with just a intake.
is it safe to run tire pressure that low (22psi) on low pro tires? i have it at like 30psi. but im spinning no wheel hop at all.
when i let it roll and go down on the pedal gradually im still running slow 60ft times. since i put the y pipe i noticed my torque disappeared a bit but my top end rips through
is it safe to run tire pressure that low (22psi) on low pro tires? i have it at like 30psi. but im spinning no wheel hop at all.
when i let it roll and go down on the pedal gradually im still running slow 60ft times. since i put the y pipe i noticed my torque disappeared a bit but my top end rips through
Last edited by rayac88; 07-11-2010 at 10:19 PM.
07-12-2010, 08:25 AM
#11
Not that I have any drag racing experiance but, maybe you should throw your stock rims on if you have them laying around and drop the pressure like Grand_hustle said. I have the same rim & tire set-up and they're pretty f'ing heavy. I know that losing unsprung weight it makes a difference. I think losing the sub's would help a lil' too, there's a rule of thumb that every 100lbs lost is about of a tenth of a second (about a car length).
07-12-2010, 08:38 AM
#12
i only ran an 1/8th i have the car on eibach/illumina setup and falken 912 tires all around. but i did leave the 2 tens in the trunk. but i thought i could break 10 seconds. there was an altima ser running 9.5 with just a intake.
is it safe to run tire pressure that low (22psi) on low pro tires? i have it at like 30psi. but im spinning no wheel hop at all.
when i let it roll and go down on the pedal gradually im still running slow 60ft times. since i put the y pipe i noticed my torque disappeared a bit but my top end rips through
is it safe to run tire pressure that low (22psi) on low pro tires? i have it at like 30psi. but im spinning no wheel hop at all.
when i let it roll and go down on the pedal gradually im still running slow 60ft times. since i put the y pipe i noticed my torque disappeared a bit but my top end rips through
Not that I have any drag racing experiance but, maybe you should throw your stock rims on if you have them laying around and drop the pressure like Grand_hustle said. I have the same rim & tire set-up and they're pretty f'ing heavy. I know that losing unsprung weight it makes a difference. I think losing the sub's would help a lil' too, there's a rule of thumb that every 100lbs lost is about of a tenth of a second (about a car length).
to the OP, im sure you know the basic hints and tips to running good times and ill ask, did you really think with all that weight your car was to perform better than it did stock??? if so why must i ask?
07-12-2010, 09:23 AM
#14
They're about 26 lbs each without a tire mounted (50 each with tires). Even if you stockies are "only" 5lbs lighter it'll make a difference. There's a big difference b/t unsprung and sprung weight. It's not like taking 20lbs out of your trunk. You're decreasing rotational mass, it's a whole different ballgame.
07-12-2010, 10:19 AM
#15
They're about 26 lbs each without a tire mounted (50 each with tires). Even if you stockies are "only" 5lbs lighter it'll make a difference. There's a big difference b/t unsprung and sprung weight. It's not like taking 20lbs out of your trunk. You're decreasing rotational mass, it's a whole different ballgame.
07-12-2010, 10:31 AM
#16
im definitely looking into some 17's for the car now.
07-12-2010, 12:56 PM
#17
i saw the stick it said 24. but i thought it was pretty light for a stock rim. cuz the stock 16's were in that area as well. i didnt go aftermarket cuz i dont know when rims get too light for street use. I have bent rims before and i hate dealing with bent rims. what would be a good weight to help my times but be able to take potholes and mainly sunken train track crossings.
im definitely looking into some 17's for the car now.
im definitely looking into some 17's for the car now.
, you might be thinking a little bit too hard, and if there was such a rim you'd probebly never find it to buy it... the keonigsegg comes with carbon fiber wheels that probebly cost more your maxima yet those are good for street use lol.. get some 240 16" wheels, or if you can find some mellenia 16" wheels, those weight about 11lbs... never the less just find some 16's, whether its 4th gens or 300z ect... makes a difference
07-13-2010, 05:27 PM
#18
assuming i find a 17 inch rim what weight should i be aiming for 18 pounds? sixteens are too small for my preference. i have seen way to many bent allow rims im not looking to spend over a grand on rims.
what would be the difference in times moving from the 24lb rims to something in the area of 18lbs?
what would be the difference in times moving from the 24lb rims to something in the area of 18lbs?
07-13-2010, 06:19 PM
#19
assuming i find a 17 inch rim what weight should i be aiming for 18 pounds? sixteens are too small for my preference. i have seen way to many bent allow rims im not looking to spend over a grand on rims.
what would be the difference in times moving from the 24lb rims to something in the area of 18lbs?
what would be the difference in times moving from the 24lb rims to something in the area of 18lbs?
... its only for track use bro... calm down you can also spend a good penny on buying leightweight 17's if that floats ur boat
07-14-2010, 06:29 AM
#22
07-14-2010, 07:30 AM
#23
08-02-2010, 08:50 AM
#25
, why the need for proof, prove it to yourself
Last edited by Grand_hustle17; 08-02-2010 at 09:08 AM.
08-02-2010, 09:10 AM
#26
??????????........... i doubt people do before and after drag runs as every single race is different.... think of it like this, if you run a 100m with a bookbag with 50lbs of books in it vs running that same 100m with 10lbs of books in it.... its moreso a common sense thing bro.... i dont see how you dont think it makes a difference , why the need for proof, prove it to yourself
, why the need for proof, prove it to yourself
08-02-2010, 12:14 PM
#28
I have done this test years ago. I gained approximately .1 seconds and 0.75mph going from a 37lb combo to a 30lb combo on the front tires. You aren't going to get .2 seconds unless you are going from a really heavy setup to a really light setup.
08-02-2010, 04:24 PM
#29
Thank you this is the info I have been asking for not all the slack I have been getting for asking. I'm moving from a 25lb wheel to a 18lb wheel so .2 should be attainable on the 1/8 mile
08-02-2010, 07:23 PM
#32
no, you go as small as you can go. the benefits to that go beyond changing FD, a smaller wheel focuses mass closer to the center which makes acceleration of said wheel require less power. FYI, J30 15's fit on the 5.5 gen and they weigh only ~14 lbs
And that is VERY helpful for a 5th gen AT 3.0L vs say a 5MT or 3.5L AT. 
08-03-2010, 05:59 PM
#34
the times suffer with 15's, i cant get all technical and explain how but i remember hearing of it, and even seeing it.... good info on the J30's though.. does that wheel fit over the stock 5.5 caliper????
08-03-2010, 08:04 PM
#35
I went to the track today to tune. to me my times were crap. i have spacers short ram and a y-pipe done. and i am running:
10.5 second avg 1/8 mile times
trapping between 69 and 71
60ft:2.6 - 2.7
r/t: under .5
I have been practicing my launches but with the tune im not seeing much of a difference. I have g35 18's on my car w/ 245/40/18 on front.
is there any advice on what i should do cuz there are civic si's mossing me. its depressing.
i have tried rolling out the line and stepping on it but still crappy launches.
and no cels are being thrown
10.5 second avg 1/8 mile times
trapping between 69 and 71
60ft:2.6 - 2.7
r/t: under .5
I have been practicing my launches but with the tune im not seeing much of a difference. I have g35 18's on my car w/ 245/40/18 on front.
is there any advice on what i should do cuz there are civic si's mossing me. its depressing.
i have tried rolling out the line and stepping on it but still crappy launches.
and no cels are being thrown
...I'm sorry dude but that was funny...but I would say go with some 16s and try leaving at idle
08-04-2010, 03:39 PM
#38
Anyway, yes they fit over the calipers, myself and another member, both 5.5 6mt, are using these wheels
, theres a reason that 99% of slicks are in 15s and smaller
Last edited by Gemner; 08-04-2010 at 03:49 PM.
08-04-2010, 04:28 PM
#39
15s that weight the same or less than any larger wheels, have tires that are just as sticky, and have the same diameter, will net you faster times
Anyway, yes they fit over the calipers, myself and another member, both 5.5 6mt, are using these wheels
, theres a reason that 99% of slicks are in 15s and smaller
Anyway, yes they fit over the calipers, myself and another member, both 5.5 6mt, are using these wheels
, theres a reason that 99% of slicks are in 15s and smaller
08-04-2010, 05:25 PM
#40