Swap 1/4 Mile Thread

[EtaSport]

ran a 14.30 with my car, honestly i'm a bit dissapointed, i was hoping to actually breach 12's but i was far from that, hooking up was pretty much pointless, I was getting wheel hop and still spinning tire at around 50 mph... had 2 clean runs, the other 2 where bs, one of the runs the wheel hop caused my car to bog and die while another time the car bogged going into third due to wheel hop in second.. anywayyy

1991 318is
s52 obd1 w/TMS cam kit.
3.25 lsd w/ 235/35/17 tires

That set-up is def. capable of 12s in my opinion. I just added the stage 2 kit to my s50 and it feels like a low 13, but it seems all of us with street tires have wheel spin issues. Im even running 205s. If I can get my falkens hot enough though they dont spin quite as much.

[xlr8rbob]

damn abe, you beat me to this thread.

ran a 15.2 at 91mph. i was kinda disappointed too. both abe and i just spun off the line most of the time. a couple of runs i pulled a fast and the furious and missed second gear.

oh well, it was just for shits and giggles. with some proper tires and better launch technique, i know i can pull low 14s. woulda had some video but forgot to load memory card into camera.

1989 335!
b35 m30/jc chip
3.73 gear 215/40/16 bfg gsports

[e30polak]

ran a 14.30 with my car, honestly i'm a bit dissapointed, i was hoping to actually breach 12's but i was far from that, hooking up was pretty much pointless, I was getting wheel hop and still spinning tire at around 50 mph... had 2 clean runs, the other 2 where bs, one of the runs the wheel hop caused my car to bog and die while another time the car bogged going into third due to wheel hop in second.. anywayyy

1991 318is
s52 obd1 w/TMS cam kit.
3.25 lsd w/ 235/35/17 tires

WTF?! :hitler:

A 14.3! What did you trap? Get some drag radials and try again!

With the way you ran against that 335i, it's pretty mind boggling that you weren't in low 13s at least...

[loonibab325i]

ran a 14.30 with my car, honestly i'm a bit dissapointed, i was hoping to actually breach 12's but i was far from that, hooking up was pretty much pointless, I was getting wheel hop and still spinning tire at around 50 mph... had 2 clean runs, the other 2 where bs, one of the runs the wheel hop caused my car to bog and die while another time the car bogged going into third due to wheel hop in second.. anywayyy

1991 318is
s52 obd1 w/TMS cam kit.
3.25 lsd w/ 235/35/17 tires

[416stroker]

What's up with the launching problems? I know rear trailing arms and 205ish rear tires aren't ideal... but I could still hook in my e30. Open diff too. If I dropped the clutch it would just sit there spinning, but I practiced a hard slip and I could go from 3000+. Is the track that much slippier?

Tracks are a lot more slick than the street its a big diff I can launch around 2500 with a lill slip of the cluth on the street but my local track I cant launch for shit I pretty much roll out then stab it.

It depends alot on the track some tracks might prep the track before the street legal drags but some dont. I know if i go to a summit series race at sac race way the drag the track and spay it with vht threw the 60foot for the high horsepower cars. But then again I dont even think theyd let me run my car in that series.

[Mako18]

Most are running lowered cars and stiffer than stock spring rates. Neither of which is helping anything. Stock springs in the rear with some bilstein HDs would be a decent setup on the cheap. Also a proper tire compound and prep, pressure, launching technique all factor in on that intial bite or hook etc...Its been my expereince you want a bit of wheel spin then a nice firm hook and a slap in the back of the head from the headrest letting you know you did a good job at the line. I know E30s are not drag cars but they are fun to drag race anyway....

[bimmerboy02]

What's up with the launching problems? I know rear trailing arms and 205ish rear tires aren't ideal... but I could still hook in my e30. Open diff too. If I dropped the clutch it would just sit there spinning, but I practiced a hard slip and I could go from 3000+. Is the track that much slippier?

[416stroker]

Take it to a track your not that faraway from one. That's way off I wouldnt even have posted that.

[evangreen]

I believe the mph is calculated from gps, which is less accurate from a specific point than at a constant speed, like i said not a track but an electronic device

[PiercedE30]

I did mine on a g-tech
m52 obd1 conversion AA chip
12lb fly
spec stage 3 clutch
getrag 260 3:73 lsd
205/50/14 crappy old and hard tires
gc coil overs 500 front and 650 rear (not that great for launch)
weighed in at 2750 with me in it, im 155
cant get good 60's ill have to try again with some better tires
also will be throwing in s52 cams and a trm tune soon hopefully getting into the 13s

Also haven't practiced much need to get some open space to get a few more runs in

60' 2.94 @28.2
30' 6.83 @61.9
1/8 9.96 @80.8
1000' 12.53 @95.6
1/4 14.64 @105.9

said peak wheel hp was 205

WAY, WAY off.

[evangreen]

I did mine on a g-tech
m52 obd1 conversion AA chip
12lb fly
spec stage 3 clutch
getrag 260 3:73 lsd
205/50/14 crappy old and hard tires
gc coil overs 500 front and 650 rear (not that great for launch)
weighed in at 2750 with me in it, im 155
cant get good 60's ill have to try again with some better tires
also will be throwing in s52 cams and a trm tune soon hopefully getting into the 13s

Also haven't practiced much need to get some open space to get a few more runs in

60' 2.94 @28.2
30' 6.83 @61.9
1/8 9.96 @80.8
1000' 12.53 @95.6
1/4 14.64 @105.9

said peak wheel hp was 205

[Rolla1990]

my old turbo e30 was running 13.8s at around 105. It was a fast car but not easy to get a good 60 foot with, my best was a 2.28.

OK that makes sense, now I know I'm not just crazy. Maybe I'll knock a few tenths off this summer. I can smell the clutch smoke already.:D

[justin_l_]

slap some slicks on and see what shel'll do my slick are way to big for an e30 so i cant do nothing.

My friend told me that he has some hoosiers from his civic, but I don't think that they are DOT approved so I would be able to use them on a street night. I am waiting for him to find out for sure.

Justin, how are you getting more wheel spin in 2nd compared to launching in 1st?

More wheel spin due to launching at a higher RPM to prevent bog.

[tonytony]

Justin, how are you getting more wheel spin in 2nd compared to launching in 1st?

[416stroker]

No, 1st. 2nd I was getting wayyyy too much wheel spin, tried it twice and got like high 15 second runs.

slap some slicks on and see what shel'll do my slick are way to big for an e30 so i cant do nothing.