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Old 07-24-2013, 10:46 PM   #36
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I'm shifting at 5500. I would ride it out if my power band didn't drop off so much. It's just tough deciding between shifting to 4th or riding 3rd all the way out.
Slam 4th, stay in that power band. Or get you some gears! I take it you've got 3.27s? But your 60' is whats keeping you from hitting 14s man. Practice practice practice. More seat time and experimenting you'll find that sweet spot
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Old 07-24-2013, 11:26 PM   #37
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Slam 4th, stay in that power band. Or get you some gears! I take it you've got 3.27s? But your 60' is whats keeping you from hitting 14s man. Practice practice practice. More seat time and experimenting you'll find that sweet spot
That's what I've been doing. I've got the factory Cobra 3.55s in it. Biggest issue right now is traction off the line.
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Old 07-24-2013, 11:40 PM   #38
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Well the altitude isn't helping you any, but yes, I agree, there's some work to do on the launch and definitely bang it into 4th.
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Old 07-24-2013, 11:43 PM   #39
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Well the altitude isn't helping you any, but yes, I agree, there's some work to do on the launch and definitely bang it into 4th.
I'm headed back next Wednesday so we'll see how it goes then. I may try to mess around with giving the tires a quick spin before reaching the line to get some heat in them. I only rode third out one pass and the went slower.
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Old 07-24-2013, 11:58 PM   #40
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I'm headed back next Wednesday so we'll see how it goes then. I may try to mess around with giving the tires a quick spin before reaching the line to get some heat in them. I only rode third out one pass and the went slower.
Street tires get slippery when you smoke them. Try just a few quick spins to clean them off, avoid the water pit, dont just pop the clutch.
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Old 07-25-2013, 12:00 AM   #41
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Street tires get slippery when you smoke them. Try just a few quick spins to clean them off, avoid the water pit
Yeah that's what I've heard. I've just been driving around the water box and staging without any burnout or quick spin.
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Old 07-25-2013, 12:00 AM   #42
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Yeah that's what I've heard. I've just been driving around the water box and staging without any burnout or quick spin.
What are you launching at? And are you just dumping it?
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Old 07-25-2013, 12:13 AM   #43
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What are you launching at? And are you just dumping it?
3K and dumping. I need to practice slipping the clutch a bit, but it's a hard habit to get into.
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Old 07-25-2013, 12:20 AM   #44
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3K and dumping. I need to practice slipping the clutch a bit, but it's a hard habit to get into.
Yeah lol i had to break myself of dumping it. Just practice man. I bet this next time around you hit 14s. Just don't doubt yourself, the car is very capable of 14s at least. More you go and practice the better your 60' will get!
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Old 07-25-2013, 12:26 AM   #45
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Yeah lol i had to break myself of dumping it. Just practice man. I bet this next time around you hit 14s. Just don't doubt yourself, the car is very capable of 14s at least. More you go and practice the better your 60' will get!
Yeah it's gonna take me a while to break it.
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Old 07-31-2013, 08:06 PM   #46
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Well I'm back again tonight with Greg (BlackedoutBKR). I'll have a passenger tonight but once it gets dark out i'll see what I can do by myself
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Old 07-31-2013, 08:11 PM   #47
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What tire pressures are you using? Front and rear?
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Old 07-31-2013, 08:16 PM   #48
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36psi front and rear right now. Las time I tried 30psi and didn't notice a difference. I would play with them more if I had a compressor or air tank to use
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Old 07-31-2013, 08:33 PM   #49
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The backs you'll need to get your launch technique down to really start dialing in the pressure properly but the front you want the max pressure the tire can take. Or the most that you feel comfortable with at 100+ mph. It reduces the rolling resistance. I regularly drive to the autocross track with 45lbs in the front and it drives fine, just a little bit of a rougher ride. We're trying to shave tenths here JDF. Remember easy on the clutch. This is fun on Wed!!! Good luck and, as always, please let us know how you do.
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Old 07-31-2013, 09:22 PM   #50
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I've actually had some good launches, my big issue right now is we have a nasty headwind going. I managed a 15.3 with a 2.3 60'. If we didn't have that headwind I would be really close to 14s. I'm probably gonna get one more run in tonight. When I'm at the road course I actually drop it to 30psi for all four tires. Do you get a good traction patch at 45psi?
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Old 07-31-2013, 10:06 PM   #51
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No. I've been slowly sneaking it down to around 40psi. We run higher pressure to avoid rolling the tire off the rim on the tight courses. For the strip though the front tires just create drag. And steer the car of course. Lol. The higher the pressure you can put in them the better.
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Old 07-31-2013, 10:55 PM   #52
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Nice. Yeah on the road course 30psi usually gets me a contact patch that reaches all the way to the edge of the tire without rolling onto the sidewall.
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Old 07-31-2013, 11:08 PM   #53
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I'm getting pretty far down the sidewall at 40 psi. I run on a course that is, many times, better suited for go-carts though. Lol. Or courses I should say. It's a Datsun 510 club that sets them up.
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Old 07-31-2013, 11:30 PM   #54
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Haha yeah those guys must like a tight course then
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Old 08-05-2013, 08:07 PM   #55
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My best so far

Only my second time to the drag strip ever so my 60' isn't the greatest either, I'm also guilty I need to brake the habit of dumping the clutch. I also couldn't get traction even though I just got a pair of Nitto 555R 285 seires drag radials.
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Old 08-05-2013, 08:47 PM   #56
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Only my second time to the drag strip ever so my 60' isn't the greatest either, I'm also guilty I need to brake the habit of dumping the clutch. I also couldn't get traction even though I just got a pair of Nitto 555R 285 seires drag radials.
Haha well you still got a better 60' than I did
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Old 08-05-2013, 09:42 PM   #57
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Only my second time to the drag strip ever so my 60' isn't the greatest either, I'm also guilty I need to brake the habit of dumping the clutch. I also couldn't get traction even though I just got a pair of Nitto 555R 285 seires drag radials.
That's not too bad of a 60'! And nice tire choice
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Old 08-14-2013, 08:03 PM   #58
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Well I'm at it again with a couple buddies. I added some Tokico D-Specs set at full stiffness and bumped my front tire pressures to 45psi. Everybody seems to be running a tad bit slow so far.
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Old 08-14-2013, 08:09 PM   #59
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Awesome! I predict a 15.1 for the first run...
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Old 08-14-2013, 08:19 PM   #60
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Awesome! I predict a 15.1 for the first run...
Ran a 15.6 at 89 on the performance tune. Just switched it to the race tune so we'll see how that does.
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Old 08-14-2013, 09:11 PM   #61
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Something must be up with either the track or the humidity cause I can't run faster than 89mph and my best run so far is a 15.4. My buddies aren't hitting their times or mph either.
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Old 08-14-2013, 10:16 PM   #62
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What is the temperature and humidity?
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Old 08-14-2013, 10:44 PM   #63
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What is the temperature and humidity?
Mid 70s and I didn't check the humidity. It did sprinkle a little bit early on though. On my last run I clocked 91mph but still only ran a 15.5
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Old 08-14-2013, 10:56 PM   #64
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Yeah, thats going to make the already high altitude seem even higher to your car. We call it "density altitude" in aviation. I didn't realize that it stayed so warm there, this late. That and the moist air is working against you guys...
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Old 08-14-2013, 11:02 PM   #65
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Yeah, thats going to make the already high altitude seem even higher to your car. We call it "density altitude" in aviation. I didn't realize that it stayed so warm there, this late. That and the moist air is working against you guys...
Yeah altitude sucks. Once it cooled off at the end of the night i probably could have done better but they close down the lanes at 9:15tish. I just gotta keep reminding myself that I'm not building this for straight lines, or else I would be quite pissed off
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Old 08-14-2013, 11:15 PM   #66
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Haha. Yeah I hear you. If you brought that car down to a sea level track, you would break into the 14's no problem. There are good days, and there are bad. I didn't do that great at the last autocross either. Not in the grand scheme of things anyway. It's a good thing we're not doing this hobby for the money, huh? Lol. Sure is a hell of a lot of fun though...
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Old 08-14-2013, 11:41 PM   #67
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Haha. Yeah I hear you. If you brought that car down to a sea level track, you would break into the 14's no problem. There are good days, and there are bad. I didn't do that great at the last autocross either. Not in the grand scheme of things anyway. It's a good thing we're not doing this hobby for the money, huh? Lol. Sure is a hell of a lot of fun though...
One of these days I'll make a trip down to someplace at sea level and see what I can do. If this ever became more than a hobby then I think I would just stress myself out too much to even perform well.
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Old 08-15-2013, 07:19 PM   #68
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DA Calculator - Density Altitude Calculator - DragTimes.com

Enter your information into it and it should give you an idea of what your car would run at sea level. Thin air and a non boosted engine make for much slower cars than at sea level.
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Old 08-15-2013, 08:13 PM   #69
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DA Calculator - Density Altitude Calculator - DragTimes.com

Enter your information into it and it should give you an idea of what your car would run at sea level. Thin air and a non boosted engine make for much slower cars than at sea level.
Interesting. It says mid to high 13s depending on which run I enter
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Old 08-15-2013, 08:51 PM   #70
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DA Calculator - Density Altitude Calculator - DragTimes.com

Enter your information into it and it should give you an idea of what your car would run at sea level. Thin air and a non boosted engine make for much slower cars than at sea level.
That's an awesome calculator.
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