Swap 1/4 Mile Thread

[808AWD325xi]

I ran my car last night. Forgot how not fun drag racing is, so this will probably be the only time I post times.

The story: Strip located 1000' above sea level. Tried using r-comps to get a good launch, but have massive wheel hop and couldn't break a 2.3.

60'- 2.304

ET- 14.089

MPH- 101.7


The car:

US-S50 w/ ZF tranny and 2.93LSD
225/50/14 tires
243rwhp


After this night, I realized how unreliable 1/4 mile times are on basing how fast a car really is. I really like the idea of using a VBox and doing 60-130 mph times. http://forums.bimmerforums.com/forum...highlight=vbox

It takes a car's/driver's launching ability out of the equation.

Nice ET/trap

[digger]

I ran my car last night. Forgot how not fun drag racing is, so this will probably be the only time I post times.

The story: Strip located 1000' above sea level. Tried using r-comps to get a good launch, but have massive wheel hop and couldn't break a 2.3.

60'- 2.304

ET- 14.089

MPH- 101.7


The car:

US-S50 w/ ZF tranny and 2.93LSD
225/50/14 tires
243rwhp


After this night, I realized how unreliable 1/4 mile times are on basing how fast a car really is. I really like the idea of using a VBox and doing 60-130 mph times. http://forums.bimmerforums.com/forum...highlight=vbox

It takes a car's/driver's launching ability out of the equation.

60-80 would be plenty represenative..........

[EtaSport]

US-S50 w/ ZF tranny and 2.93LSD
225/50/14 tires
243rwhp

mods on this 243rwhp s50? sounds stout as hell.

[PiercedE30]

Good time to post the fun I had last night.
So, I got to run a buddy of mine in his C6 'Vette. He runs 12.80's consistently and is trapping like 118/117. Well, I just (Thursday) got my 225/50/15 BFG DR's mounted on a set of 5 series steelies (15x6.5 et20). I dropped the tire pressure down to 25 psi (then later dropped them to 23 psi and could feel a difference) even though I should have gone down to 20 psi. Did my burnout, then lined up. Turned on the launch control, brought it up to 4000 and then went. I spun in first up until about 6500-6700. I 60 footed the shit out of him and had him all the way through the 1/8. After that, he pulled around me pretty good and at the end of the 1/4, he had me by like 2-3 car lengths. When I crossed the 1/4 mark my MPH was between 105 and 110, wasn't paying that much attention to the speedo.
I look at it this way, once I get my tire pressure in the sweet spot and get the launch control at the correct RPM, then I should be able to pull sub 1.8 60 foot times, as long as I don't snap any axles. There is a test and tune all day next sunday that I am going to hit up after the AutoX gets over with. That will allow me to figure out tire pressure, launch control, maybe play around with the flat shift feature, and I should be able to find the sweet spot. I'll post it up Sunday evening when I get back.

Note: I don not recommend street racing. It can be hazardous to your health, and the health of others. Take what I have said lightly.

[mazur]

I ran my car last night. Forgot how not fun drag racing is, so this will probably be the only time I post times.

The story: Strip located 1000' above sea level. Tried using r-comps to get a good launch, but have massive wheel hop and couldn't break a 2.3.

60'- 2.304

ET- 14.089

MPH- 101.7


The car:

US-S50 w/ ZF tranny and 2.93LSD
225/50/14 tires
243rwhp


After this night, I realized how unreliable 1/4 mile times are on basing how fast a car really is. I really like the idea of using a VBox and doing 60-130 mph times. http://forums.bimmerforums.com/forum...highlight=vbox

It takes a car's/driver's launching ability out of the equation.

[BingM3]

not bad...i like the 60 time, is that 230 to the wheels? or crank?

Has to be crank, never dynoe'd the car - I found a 506 DME for the build date for my engine and it revs super flat out smooth when you press on it...still my my idle issues on awhile but i hear it is common on the S50 engine....got my T chip which should bump up the idle because of the L/F I have...got the 3.5 HFM, I'll test and post #'s next week, waiting for my 3.5 adaptor from siliconeintakes.com

[e30polak]

not bad...i like the 60 time, is that 230 to the wheels? or crank?

[BingM3]

G-TECH update two days ago
0-60 5.17 secs
1/14 14.06
HP - 230 HP

[aeryk7]

I dynoed 215rwhp with my AFR very rich at probably near 8 to 1 the reading fell right through the bottom of the chart which ended at 10 . I was running 21.5lb injectors with no tuning it was a little torqier down low but pigish up top . I am gonna get dynoed again with the stock injectors which have been ever since i wasted money on that dyno

[BingM3]

2.5l and 1/8th. I wish there was a 1/4 somewhere close to me :(

I only got a slow 9.6 @ 74.49 because I had NO traction. I spun 1,2 and 3. It doesn't help that the tires that came on the new wheels have diff back tires w/ diff amts of tread or that I have a 6 puck clutch. Also the wilks is known for have horrible traction in general...

9.6 isn't too bad but its not what I was hoping for. I really wanted to get into the low 9's or high 8's. I must say though its the first time I have ever drag raced, but it was a lot more fun than I thought it would be. But I am getting some azenis this weekend so hopefully when I make it back out I can get some better #'s.

I still have to hit under 14:( but I like everything in the car though:)
A/C, seats, spare, etc

[asubimmer]

2.5l and 1/8th. I wish there was a 1/4 somewhere close to me :(

I only got a slow 9.6 @ 74.74 because I had NO traction. I spun 1,2 and 3. It doesn't help that the tires that came on the new wheels have diff back tires w/ diff amts of tread or that I have a 6 puck clutch. Also the wilks is known for have horrible traction in general...

9.6 isn't too bad but its not what I was hoping for. I really wanted to get into the low 9's or high 8's. I must say though its the first time I have ever drag raced, but it was a lot more fun than I thought it would be. But I am getting some azenis this weekend so hopefully when I make it back out I can get some better #'s.

[Stu Mc]

dang I pulled a 2.2 60' last thursday w/ my m50 and REALLY crappy rear tires. I have some azenis going on this weekend and I'll prob go back to the strip in 2 weeks. I want to go this thursday but I am leaving for Road Atlanta about 9 in the morning :(

2.5/3.0/3.2?

What did your car do at the drag strip? 1/8, 1/4?

[Jean]

Ya its a little heavier now, it was 2460 almost on empty no rear seats ,no carpet, no sound deadening, no AC or spare

I am running the 3.25 LSD from an e28 i am curious to see if the zf will make a difference in acceleration

That 13.3 run was on 195's basketweaves

How much whp did your car put down on a dyno ?

[aeryk7]

Ya its a little heavier now, it was 2460 almost on empty no rear seats ,no carpet, no sound deadening, no AC or spare

I am running the 3.25 LSD from an e28 i am curious to see if the zf will make a difference in acceleration

That 13.3 run was on 195's basketweaves

[asubimmer]

dang I pulled a 2.2 60' last thursday w/ my m50 and REALLY crappy rear tires. I have some azenis going on this weekend and I'll prob go back to the strip in 2 weeks. I want to go this thursday but I am leaving for Road Atlanta about 9 in the morning :(