Swap 1/4 Mile Thread

[Tomv84]

1987 325 with m30b35, 2750 lbs weight with driver and about half tank of gas. Ran 14.3 at 97 last week. Car is consistent and very easy to launch with the g260/3.73 diff.

[st.petebiodiesel]

Tossed some drag radials on my sedan Needless to say it helped a lot. Equates to a 12.6 sec 1/4 mile. My goal is to get this car to run a 11.50 with more nitrous and some weight reduction. Sent from my SM-G960U using Tapatalk

[nomansland92]

I just started doing 1/4 miles runs with my car. My 60ft is terrible because I was spinning till 3rd. The car is a 325ix turbo with a dct. I'm hoping to run a high 10 this year. Sent from my SM-G892A using Tapatalk

[st.petebiodiesel]

1/8th mile 1987 325e sedan full interior, air conditioning, m30b35/G260 swap, 225/50/16 tires, Microsquirt,100 hp nitrous. I know my 60 foot needs work. Sent from my SM-G960U using Tapatalk

[Sam8888]

M20B25 in E21 body:
60ft: 2.362
1/8sp: 116,7
1/8t: 9,866
1/4sp: 149,7
1/4t: 15,163

Racing excuses: max ign. advance was 28 deg, crappy open diff and street tires, full interior.

Engine specs: M20B25 with ported cyl head, headers and VEMS ems.

I guess i could do 14s since i had the cyl head rebuilt now (it had 5 bent intake valves! ).

[nando]

as far as I understand it, wheel hop is mostly a function of shock rebound & spring rates.

[justin_l_]

Back when I had my orange car it had a lot of wheel hop as well. Unless you get a proper setup, it seems to be common with these cars.

With any luck this year I will finally be able to get the supercharged S52 down the track.

[st.petebiodiesel]

M60 1/8 mile

reaction: .5557
60 foot: 2.0717
330 foot: 5.7742
1/8 mile: 8.7424
1/8 mph: 83.30
est 1/4: 13.5-13.7

The car: 1987 325e with m60B40, dudmd chip, mustang injectors, 5 spd ZF, 3.15 torsen diff, 225/50zr16 toyo RA1 on the rear with -5 degrees of camber.

lots of wheel hop out of the hole even after warming the tires up several runs back to back. I know the rear camber is killing me.
hopefully with the rear camber adjusted out and some smaller diameter drag radials I could get a 8.4 - 8.5.

[justin_l_]

I'd like to get the OBD2 SC S52 to the track this year, but we'll see.

[Reichart12]

I never knew about this thread. Id like to make it to the track this year for some passes, but Im 2.9L M20 anyways...

[MacBudd541]

Bump. Nobody drags their cars these days?

[DREWHALL]

I don't know much about drag racing, but I've seen cars run mid 12's with a 106/107 trap. My car "should" be able to do a high 12 without much trouble if I could drive it. It really isn't set up for it at all so that doesn't help getting it off the line. There are so many variables it's hard to say what anything should do until you get it out there and really get used to launching it. I know I would like to get some more weight out of mine :)

[dcskate102]

My car was 2680 when I ran that 13.3@103. I'm assuming he doesn't have any significant weight reduction done or we would have mentioned it. Even if he managed to get down to 2500, that doesn't explain how my car, with a bigger and broader power and and much more traction, and a better launch, would be slower.

You're thinking about trap speed way too much, I could've ran the same time with a slower trap and better 60ft. Not to mention altitude, humidity etc etc

[dcskate102]

i would be looking at your car, there is something wrong if it has 260whp is 2680lb and traps 103, you should be 108-110mph.

you only need 240 crank hp at that weight to trap 103 so his 200whp is close to the money for trapspeed.

an E46M3 trapspeed is 103-105 witht 3400lb and 280whp ish

Well now that everyone is arguing...

I know for a fact the car did make more power than what the dyno showed. The strange ratio with the ZF could've been a big factor in the skewed numbers along with that old dyno.

As far as weight reduction nothing other than sound deadening removed, rear seat bottom out and no spare. The car was very surprising for what it was, ran down multiple e46 M cars among others.

[digger]

i would be looking at your car, there is something wrong if it has 260whp is 2680lb and traps 103, you should be 108-110mph.

you only need 240 crank hp at that weight to trap 103 so his 200whp is close to the money for trapspeed.

an E46M3 trapspeed is 103-105 witht 3400lb and 280whp ish