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Procede v3.1 Drag Results
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11-25-2008, 11:28 PM | #23 | |
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2011 Alpine 335d M-Sport 12.34 @ 110.48mph
2019 i3s Terra, 2008 Black 335i Sedan. 11.11@ 129.47 mph 2008 Monaco Blue JB3 2.0 335i Coupe. 11.33 @ 132.77 mph, 60-130mph: 6.95 seconds 2023 i4 M50 11.48 @ 121.56mph, 3.43 0-60 (dragy) |
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11-25-2008, 11:40 PM | #24 | |
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As Shiv commented, improve the launch and you're going to pick up a couple of tenths at least. With that trap and a 1.8sec 60" time I bet you're in the 12.3x range, and this should be feasible especially with a 6AT. I noticed you're on 19" PS2's. If they're non-runflats, try lowering the air pressure and doing a solid burnout to warm them up and clean them off. Some people say burnouts are pointless with very low profile tires, but I have the same tires an I'm telling you that it works. At the track I've been dropping the pressure to 24lbs then stopping at a gas station after leaving the track and filling it back up. Good luck next time out!! |
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11-26-2008, 12:55 AM | #25 | |
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11-26-2008, 01:23 AM | #26 | |
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With 36psi in the rear tires, I couldn't hook them no matter what. Might not be everyone's solution but it works for me. |
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11-26-2008, 08:24 AM | #27 |
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I'm not sure if dropping tire pressure helps me or not. My first time at the track during the summer (85 degrees and humid) I left the General Exclaim 265/30's on CSL reps at ~40 psi. Somehow I managed 3 of 6 runs under 2.0 with one being 1.86. I don't think the Generals are known for their traction qualities, but they are a knotch above the RFT's to be sure. Excellent track prep helped me look like less of a rookie.
This past trip (35 degrees and dry) I dropped them to 25 psi and 2 of my 5 runs were under 2.0 with my best being 1.91 on a 12.33/115.76 run. I have no real technique and no one ever runs over after my runs to get driving pointers. I just wait for tree to start down, try to keep breathing and do a semi-dump with the revs in the 2000-2500 range. I can't really be sure of my rpms, I never look at the tach during the launch. |
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11-26-2008, 09:27 AM | #28 |
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I wonder what the best psi is for Nitto DRs, I have been testing at 36psi, (normal street use), an lower them to 24psi for drag runs. However, some people say 18psi would help? Same with ET Streets? Is it safe to go to 18psi?
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2011 Alpine 335d M-Sport 12.34 @ 110.48mph
2019 i3s Terra, 2008 Black 335i Sedan. 11.11@ 129.47 mph 2008 Monaco Blue JB3 2.0 335i Coupe. 11.33 @ 132.77 mph, 60-130mph: 6.95 seconds 2023 i4 M50 11.48 @ 121.56mph, 3.43 0-60 (dragy) |
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11-26-2008, 10:31 AM | #29 |
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You definitely want to drop DRs tire pressure down. They are very soft so when you drop the tire pressure they are a lot less prone to cupping. The lower tire pressure you have, the bigger contact patch (3500 lb/ 4/ 35 psi = 25 sq in vs. 3500/4/20 psi = 43.75 sq in.). The bigger contact patch the greater the traction. It's all about finding the lowest pressure without cupping. You also have to take the good with the bad, too little tire pressure and your mph can go down, but generally less is more
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11-26-2008, 10:16 PM | #30 |
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DR's are a great way to make a MASSIVE improvement in traction, especially with the differential.
Tire pressure is important, but heating them is more so. Get a good solid several second burn out just before launch and they'll hold traction well enough for an 8 second drag car. |
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11-26-2008, 10:20 PM | #31 | |
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The last time i was the track, I managed to cut a 1.6x 60" time. Did so with just 16psi of tire pressure in my BFG drag radials. Didn't hurt top end either. Shiv |
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11-27-2008, 09:28 AM | #32 |
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That's a lot of mods for a 12.6 run, should be able to get low 12s i'd say, keep burning those 1/4!
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11-27-2008, 06:02 PM | #33 | |
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Pretty good, i'd say Shiv |
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11-27-2008, 08:14 PM | #34 | |
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I wonder if I should enter one of my runs....even w/ a crappy et it would be the fastest customer trap on dragtimes. Clems would be right there too but it wasnt his best et.
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11-27-2008, 08:20 PM | #35 | |
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11-27-2008, 08:22 PM | #36 | |
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I dont have my timeslip though.........it was a 12.61 at 116.3xmph, 2.3 60 ft. I dont remember the rest. threw away the slip in disgust.... There was AT LEAST another 1mph in the car that day. I'll enter it, dont know if they will let it stay.
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11-27-2008, 08:27 PM | #37 | |
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11-27-2008, 08:31 PM | #38 | |
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it was this car, took this picture when it was rolled off the trailer at the start of the day so sexy
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11-28-2008, 02:49 PM | #40 |
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116 without LSD? Wow!
& kudos to the OP too.
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11-28-2008, 09:07 PM | #41 |
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it was in absolutely ideal conditions for HP at the strip, but unfortunately not for traction.....really wish I had an LSD so I could have heated the drag radials fully. trap speeds are great, but not being able to put the power down until middle of 3rd gear is
the more impressive feat was that Clem ran over 116mph the same day on a V2 car w/ just race gas and dual cone intake.....thats it, no downpipes, no LSD, no exhaust, no intercooler, no race gas map......nothing. I believe he ran 5 straight runs over 115mph with that "mild" setup!!!!
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Last edited by Sniz; 11-28-2008 at 09:25 PM.. |
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