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03-12-2016, 02:24 PM | #1 |
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1/4 mile on a 135i
Hello guys, my name is Diego and I am from Argentina, I currently own a manual transmition 135i M package N54 engine, the mods are DPs an JB4, I like to go drag race events, here the tracks are no trated with vht or nothing to make them gripier, and the grip is really bad, like run on open street, when the car was stock I made 13,70 sec using Yokohama S. Drive tyres (30lbs pressure).
Last week I went with the DPs installed and JB4 map 2, same tyres and pressure, the result was 13,50 sec.. the wheels spun a lot! Last monday in order to solve the traction issue I bought new rear tires, I put Yokohama Neova AD08 in 265-35-18 over the original 8.5" wheels, everithing seems ok, but when I faced the drag trip again everithing gets worst than the S. Drives!! tons of spining, the car almost hit the side wall... I run 15 sec... then I tryed again launching at 1500 rpm and I hit 13,60 sec. Maybe somone can help me, next week I got a challenge with a stock Z06 Corvette, I dont know what to do to make my 135i a little bit faster (to at least no loose for a football camp..) A question, is possible the Yokos AD08 need some break in period to work properly? That is maybe the problem, I run the 1/4 mile with the tyres with only 20 miles of wear on them. Thanks! Last edited by Revil; 03-12-2016 at 03:04 PM.. |
03-12-2016, 02:53 PM | #2 |
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You're manual, so you have total control over the launch. See if you can find someone very experienced to launch your car and give you any tips on maximizing traction.
You could also get your car club together and prep the "drag strip" with whatever the hell they use until it's sticky. Other solution, drag slicks. |
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03-12-2016, 03:12 PM | #3 |
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Thanks for your reply, Im not a professional but I have run 1/4 mile for 10 years, mostly with FF cars, I can say that with FR cars are easy to launch, but the problem is the grip, some guys in the track told me the same, to put drag tyres, but my idea is make the best time possible on radials. I want to reach the high 12s (12,8/12,9), do you think is possible with this yoko "sticky" tyres or I need to go back to the S Drives with 20psi and get more practice? The AD08 really disapointed me, at leas for now
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03-12-2016, 03:58 PM | #7 |
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Maybe throw a intercooler and slicks on you be golden. Seems like some driver error going on. Post up your time slip let's check that out. Zo6 could maybe start in third gear and still get ya @13.5
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03-12-2016, 04:39 PM | #8 |
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Yes, it would help a lot, but I think like it is right now the car is able to do less than 13 sec with proper traccion, the main question is if the Yoko Neova AD08 can do better when braked in or if they are useless for 1/4 mile runs
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03-12-2016, 04:54 PM | #9 |
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Yes, I know I cant win with a z06, but he will have the same grip problems with the shitty track, so I dont think it will be easy for him eather, that is my gap for do a decent match, I see in USA the z06s are bone stok doing around 11,8-12,10. Here you need to put half second more at least
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03-26-2016, 05:14 PM | #12 |
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Hey guys, I leave a video running las night against a Ford Mustang GT V8 with stage 2 kompressor upgrade (410hp), the mustang run 13,06 and I run 13,35. As I set before is not easy control the wheel spin in our track here.. other problem is the fuel, our best is 91/93 oct, so my cars avg ign is always in 6/6,9..I reach the finish line of the track in 4th gear at 5200rpm I guess, but if I stay in 3rd the car cuts red line, so i should put the 4th gear for just 10/20 meters.. any comments or advises are welcome, I don't know how many HPs should my car get, the Mustang with 410 seems to be faster, but he was running with drag slick tyres and I was running with street tyres.
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03-26-2016, 05:19 PM | #13 |
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Sounds like you need to try roll racing. Get on a freeway or other long straight road, and go from a rolling start. Could be 40 MPH, could be 80, all that matters is you pick a speed that gives you traction when you start. Let off when one driver loses or you get scared. That's how all the 1000+ HP cars with traction issues race here in houston lol.
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03-26-2016, 05:26 PM | #14 | |
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Quote:
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03-26-2016, 07:07 PM | #15 |
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Dunno what altitude you're at but honestly it sounds pretty good to me if you're .3 off a 400hp car with slicks and you have street tires. Slicks and a good launch will give you a ton of time in the 1/4.
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03-26-2016, 10:14 PM | #16 |
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Yes, I managed to made a decent launch, but the slicks are so sticky that the Mustang win half car ahead just in 1st gear. We are at sea level
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04-21-2016, 01:03 PM | #18 |
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Do you have a differential lockdown?
That will help prevent any wheel hop.
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04-21-2016, 01:10 PM | #19 |
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Better tires. AD08 are made for road courses, not the drag strip. Get a drag rdial.
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04-29-2016, 05:19 AM | #20 | |
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Drag racing tips
Hola revil: saludos!
Search "mrblonde" on this site, he jas great insight for both new and experienced drivers. You just have to spend some time launching. Below is his "part 1"post under drag racing tips. He also has a part 2. Suerte y Dios te bendiga! Quote:
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06-03-2016, 04:37 AM | #21 |
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Gracias Matacuero! Last month I went again to the 1/4 mile event and I ve done 13,06 seg, Im still trying to touch the 12,XX, Im getting close, no changes on the settings except for the tyre pressure, the optimal for me is 18lbs
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06-08-2016, 12:55 AM | #22 |
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What is your trap speed? These cars should have enough power to run in the mid 12s stock even with sh*t rear suspension (which they have for drag racing) and hard tires.
Is the track launch pad surface smooth concrete? Or Asphalt? Without a LSD, racing tires, some working suspension, and track prep, you're never going to get a hard launch. Good news is your clutch and half-shafts will last a lot longer If none of those things are going to improve you should be able to run much quicker just soft-launching the car and driving the piss out of it. Good on you for drag racing a manual trans car, there aren't many of us bad-ass mofos out there |
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