EVODAVE needs advice on dragracing from the 10 second or faster crew!!
Sep 20, 2005 | 09:39 AM
#17
Originally Posted by evodave
i haven no doubt its the driver. the car has almost instant boost as just about any turbo would when you set it up for flat shifting (2step) and also set it up with the ignition advancing 200rpms before so it will keep the turbo spooled . The main issue in my eyes is i realize the turbo is large and without the flat shifting the boost recovery isn't so hot so thats why i set it up and it did make a huge difference. The only thing is i haven't been able to flatshift 1-2 mostly because i forget and also cause its a lot harder shift to get perfect for me. Even when i had stock turbo cars my back 8th was great but the front wasn't up to par. Additionally with my old evo with the 3037 turbo i could do a 7.4 or 7.5 8th mile at 95ish mph...but only run 11.5 at 122mph in the quarter so i think it has to be something in the first 8th...
Its a shame the car can't break 10s trapping almost 5 mph more then other have to do 10s in evos. If me or my buddy drives the car neither of us get anywhere near shifting as fast as i used to in most of my other cars that had trannies where i felt confident that if i tried to shift it fast it wouldn't bust a tooth off a gear or something. I guess maybe i worry too much about it.
Its a shame the car can't break 10s trapping almost 5 mph more then other have to do 10s in evos. If me or my buddy drives the car neither of us get anywhere near shifting as fast as i used to in most of my other cars that had trannies where i felt confident that if i tried to shift it fast it wouldn't bust a tooth off a gear or something. I guess maybe i worry too much about it.
NO WAY to tune a drag car on a dyno jet
You need to tune it at the track - on the road or on a mustang dyno
Sep 20, 2005 | 11:36 AM
#19
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Originally Posted by DynoFlash
Its not the driver its the tuning
NO WAY to tune a drag car on a dyno jet
You need to tune it at the track - on the road or on a mustang dyno
NO WAY to tune a drag car on a dyno jet
You need to tune it at the track - on the road or on a mustang dyno
So the car picks up 32mph on the back 1/8th and its Tym's tuning?
You never cease to amaze me.
Sep 20, 2005 | 06:50 PM
#20
This is interesting. I trap 4 mph slower in the 1/4 but 1 mph faster in the 1/8th. Maybe you shift too early from 3 to 4. This run wasn't exactly a perfect 1-2 shift either. It was half decent like what you describe. What is your 330' time. Mine was 4.9 which is decent but certainly not perfect. I have hit 4.8 before with less power. My 60' was 1.793.
Last edited by fre; Sep 20, 2005 at 09:04 PM.
Sep 20, 2005 | 07:03 PM
#21
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From: driving the 10 second beast in ohio or running lightmods.net
.2179 reaction time
1.68 60ft
4.7831 330ft
7.2990 1/8th mile time
97.24 1/8th mph
9.3911 1000ft
11.1689 1/4 et
128.99 1/4mph
what that tells me is that i drive right around you mph wise....first i am same ,then slower then gain a bunch cause its no longer driver issues just power...
do you have your slip? you have a similar setup so this should be good comparison i suppose
1.68 60ft
4.7831 330ft
7.2990 1/8th mile time
97.24 1/8th mph
9.3911 1000ft
11.1689 1/4 et
128.99 1/4mph
what that tells me is that i drive right around you mph wise....first i am same ,then slower then gain a bunch cause its no longer driver issues just power...
do you have your slip? you have a similar setup so this should be good comparison i suppose
Sep 20, 2005 | 08:34 PM
#22
If I were you, I would start looking at a better tire/wheel combo to get the 60' down. high 1.6's aren't "bad" for street tires, but getting a 1.60 to 1.59 would put you right in the 10's and inprove the 1/8mile significantly. Your car has enough power to 60' in the low 1.5's with ease should you have traction available.
You will pick up some ET with flatshifting the 1-2. These are all obvious things IMHO, no magic in it.
You will pick up some ET with flatshifting the 1-2. These are all obvious things IMHO, no magic in it.
Sep 20, 2005 | 09:04 PM
#23
Slip is
.6 r/t heheheh
1.793
4.922
7.421
98.17 mph
9.567
11.370
125.38 mph
your 4.7 330 suggests it isn't your 2nd gear shift I think you shift too early from 3 to 4 or from 2 to 3. Notice you have .14 second on me at the 330 mark and then you only have .12 seconds at the 1/8. You should be widening that gap not narrowing. Also on my run my car pulled a bit of timing up top which could explain some of that. Yea just checked the log again and it pulled 2 degrees in fourth.
.6 r/t heheheh
1.793
4.922
7.421
98.17 mph
9.567
11.370
125.38 mph
your 4.7 330 suggests it isn't your 2nd gear shift I think you shift too early from 3 to 4 or from 2 to 3. Notice you have .14 second on me at the 330 mark and then you only have .12 seconds at the 1/8. You should be widening that gap not narrowing. Also on my run my car pulled a bit of timing up top which could explain some of that. Yea just checked the log again and it pulled 2 degrees in fourth.
Last edited by fre; Sep 20, 2005 at 09:15 PM.
Sep 20, 2005 | 10:18 PM
#24
Originally Posted by Torre from Va.
to me cutting a good light helps me be more alert to hit my shifts....if you sleep on the tree your sleeping the whole pass........imo.......hey what the hell do I know I've only been 4.95 in 1/8 & 7.77 in the 1/4 not in a evo
Even if I'm wrong in my cynical reply and you did run those times that doesn't change the fact that you don't know what your taking about.
Sep 21, 2005 | 05:43 AM
#25
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Originally Posted by Jasil
Sure you have Even if I'm wrong in my cynical reply and you did run those times that doesn't change the fact that you don't know what your taking about.
Even if I'm wrong in my cynical reply and you did run those times that doesn't change the fact that you don't know what your taking about.look d**k,I think maybe I spoke a little too general the first time his .60 ft needs improvement in my eyes ......... RT has nothing to do with helping ET....no kidding.......good lights help to win the race against opponents.........
come drive my other car & tell me what you think !!
Sep 21, 2005 | 06:23 AM
#26
Hey Dave, what's your tire pressures look like? Is the launch lots of wheel spin or a bog? With pressures set right I can hit high 1.5's and 1.60's. It usually takes me 3-4 passes for the day to get it good. First 60' is almost all tire pressure. Get yourself a good accurate gauge, Longacre.
For example here is my 3 runs from this Sunday. I could have went down 1 more pound and got a real low 1.6's. This is on Kumho MX's.
1st Tire pressure 30/29
.406
1.705
4.922
7.620 90.19
9.926
11.842 117.92
2nd Tire pressure 29/28
.596
1.691
4.871
7.530 91.04
9.826
11.746 117.50
3rd Tire pressure 27.5/27
.069
1.658
4.839
7.501 91.13
9.815
11.866 104.41
For example here is my 3 runs from this Sunday. I could have went down 1 more pound and got a real low 1.6's. This is on Kumho MX's.
1st Tire pressure 30/29
.406
1.705
4.922
7.620 90.19
9.926
11.842 117.92
2nd Tire pressure 29/28
.596
1.691
4.871
7.530 91.04
9.826
11.746 117.50
3rd Tire pressure 27.5/27
.069
1.658
4.839
7.501 91.13
9.815
11.866 104.41
Sep 21, 2005 | 06:31 AM
#27
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From: driving the 10 second beast in ohio or running lightmods.net
tire pressures are mid 30s. Thing is guys up until i get this new ralliart unit in from jon at TRE i haven't felt confident launching the car because of worries of breaking. My 60fts range normally from 1.61 to 1.67 on pure stree tires that is not bad since the car isn't setup at all for drag racing...it is way more setup for road racing and such with all the downforce inducing items left on the car and such. I think i may have figured out part of my 1/8th problem.... the tires . I have 255 40 17s which have basically lowered my gear ratios in each gear (ie. why i need to rev to almost 8500 rpms to do 129mph. So i am thinking that maybe that is part of my problem of why it seems ultra slow in the 8th???? I know its still the 1-2 shift and driver and maybe some of it is not carrying the launch far enough outta the whole in 1st gear but i don't have a built motor with high reving abilities like most of these other racers do...
Sep 21, 2005 | 07:07 AM
#28
Originally Posted by evodave
tire pressures are mid 30s. Thing is guys up until i get this new ralliart unit in from jon at TRE i haven't felt confident launching the car because of worries of breaking. My 60fts range normally from 1.61 to 1.67 on pure stree tires that is not bad since the car isn't setup at all for drag racing...it is way more setup for road racing and such with all the downforce inducing items left on the car and such. I think i may have figured out part of my 1/8th problem.... the tires . I have 255 40 17s which have basically lowered my gear ratios in each gear (ie. why i need to rev to almost 8500 rpms to do 129mph. So i am thinking that maybe that is part of my problem of why it seems ultra slow in the 8th???? I know its still the 1-2 shift and driver and maybe some of it is not carrying the launch far enough outta the whole in 1st gear but i don't have a built motor with high reving abilities like most of these other racers do...
Sep 21, 2005 | 07:14 AM
#29
If you can nail a 1.61, with clean shifts, that should put you into the 10's. But yeah get the diff in and get comfortable with it, then start working on the launch. Then you can figure tire pressures and the such. Get a dozen passes on it, then start scratching your head if you're not in the 10's.
A 255/40 is 3/10th's smaller, which shouldn't make too much of a noticeable difference, if anything I would think it would help the first 1/8th and hurt the second. The rolling resistance might hurt the top end a little, adding a little over 3" of rubber to the ground.
Looking over your slip again, I would have to say it's the launch and the 1-2 shift. At the 330 you're 5/100th in front of me, but at the 1/8 your 2/10th.
Good luck Dave
A 255/40 is 3/10th's smaller, which shouldn't make too much of a noticeable difference, if anything I would think it would help the first 1/8th and hurt the second. The rolling resistance might hurt the top end a little, adding a little over 3" of rubber to the ground.
Looking over your slip again, I would have to say it's the launch and the 1-2 shift. At the 330 you're 5/100th in front of me, but at the 1/8 your 2/10th.
Good luck Dave
