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Old 05-12-2012, 09:17 PM   #1
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help with traction?

Ok so today at our 1/8 th mile track I could only manage a 8.567 at 86.25 mph with a 2.11 60 foot. I could only launch at 3000 but it would bog coming out of the hole. I need some help with traction at launch I have 305 dr so tire is good but the rear is stock. What's the next best mods so I can launch good?
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Old 05-12-2012, 09:43 PM   #2
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Stock LCAs? Are you running stock intake manifold?
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Old 05-12-2012, 10:32 PM   #3
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Re: help with traction?

If it's bogging then move the rpms up more until it doesn't bog...
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Old 05-12-2012, 11:20 PM   #4
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Any higher and I lose traction but yes only mods is 91 tune with steeda intake
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Old 05-12-2012, 11:29 PM   #5
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The right one is before the tune and intake launching at 4500 rpms and the left one is after tune with only able to launch at 3000 rpms

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Old 05-12-2012, 11:43 PM   #6
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Quote:
Originally Posted by Mweigt07
Ok so today at our 1/8 th mile track I could only manage a 8.567 at 86.25 mph with a 2.11 60 foot. I could only launch at 3000 but it would bog coming out of the hole. I need some help with traction at launch I have 305 dr so tire is good but the rear is stock. What's the next best mods so I can launch good?
Can you guys really drop the clutch at 3k and above in the 2011+ GT's? Seems like you'd just sit there and roast the tires. I did that in my Mach w/Goodyear F1's and it's a roast fest. We all know you guys got more power than I have.
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Old 05-12-2012, 11:53 PM   #7
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Re: help with traction?

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Originally Posted by Mweigt07 View Post
Any higher and I lose traction but yes only mods is 91 tune with steeda intake
Put more heat in the tires until they stick. If you're bogging it needs more rpm. Just play with it.

My car takes a good 2nd gear burnout for 10 seconds or so to get enough heat in drag radials.

---------- Post added at 11:53 PM ---------- Previous post was at 11:48 PM ----------

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Can you guys really drop the clutch at 3k and above in the 2011+ GT's? Seems like you'd just sit there and roast the tires. I did that in my Mach w/Goodyear F1's and it's a roast fest. We all know you guys got more power than I have.
He's on drag radials...not goodyear crappy traction tires.

I launch my car between 3500 and 3800 and I'm putting 500 to the tires.

The trick to dr's is to slip the clutch until you feel it hook then dump. Should be able to lower that 60' significantly. 1.7 is a good starting point on drag radials.
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Old 05-13-2012, 12:00 AM   #8
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Lol I smoked the tires till I couldn't see the guys behind me to get that run. I just want to know what is the next best mods. I tried with light water burnout to heavy water even a long really long burnout. A longer burnout just made me spin even more

---------- Post added 05-13-2012 at 12:00 AM ---------- Previous post was 05-12-2012 at 11:55 PM ----------

Yeah I need to learn to slip the clutch because this track has pretty bad prep, what's the trick to it?
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Old 05-13-2012, 12:04 AM   #9
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Quote:
Originally Posted by lowflyn

Put more heat in the tires until they stick. If you're bogging it needs more rpm. Just play with it.

My car takes a good 2nd gear burnout for 10 seconds or so to get enough heat in drag radials.

---------- Post added at 11:53 PM ---------- Previous post was at 11:48 PM ----------



He's on drag radials...not goodyear crappy traction tires.

I launch my car between 3500 and 3800 and I'm putting 500 to the tires.

The trick to dr's is to slip the clutch until you feel it hook then dump. Should be able to lower that 60' significantly. 1.7 is a good starting point on drag radials.
Yeah, I'm hearing a lot of bad from ppl about Goodyear tires. Gotta wait till there used up though. Does the "feel the hook, then dump" work for street tires in your experience?
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Old 05-13-2012, 05:17 AM   #10
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I used to dump my manual at 6000rpms so it wouldn't bog with the boss intake. Anything under 5000 and it bogged. Cut 1.5 60fts. You need heat the drag radials good. And what size are they? 15/16/17/18 etc etc. I ran 15 in rears and 17 up front. Look into some lca's and relocation brackets.
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Old 05-13-2012, 06:11 AM   #11
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Quote:
Originally Posted by wnt2gofst
I used to dump my manual at 6000rpms so it wouldn't bog with the boss intake. Anything under 5000 and it bogged. Cut 1.5 60fts. You need heat the drag radials good. And what size are they? 15/16/17/18 etc etc. I ran 15 in rears and 17 up front. Look into some lca's and relocation brackets.
They are 305 35/18, so I guessing solid all the way on the lca's? I am lowering the car just the prokit so the relocation bracket is a must I know but an adj upper control I can fine tune the angle just right? I'm just realling learning about this rear setup only had to deal with leaf springs before lol
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Old 05-13-2012, 09:44 AM   #12
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Re: help with traction?

You can probably solve alot of your issues by just changing the upper arm. Try that first, then get at the lowers if you're still not satisfied.
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Old 05-13-2012, 09:58 AM   #13
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Ok well what's the best upper control arm? Do I need the bracket also?
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Old 05-13-2012, 10:16 AM   #14
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Quote:
Originally Posted by Mweigt07
Ok well what's the best upper control arm? Do I need the bracket also?
Best is relative and open for discussion. I'm a huge fan of UPR products and they offer a forum discount that I can hook you up with via pm.

BMR makes good products as well, I suggest comparing the two and looking up reviews.

And if you're going to replace the uca I would do the bracket too.
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Old 05-13-2012, 10:56 AM   #15
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Re: help with traction?

Depends what you want. You want stock quiet and decent control, Roush is your only choice. Everything else is worse in terms of NVH but, arguably, more direct in terms of axle control. LCAs are similar in that, there's more noise, no matter what you choose.

Depends on power level too. A 400 horse application isn't stressing everything as hard as a 600 horse application, so, you can get away with a softer approach.

I got the Roush upper becasue I want stock quiet on my DD. Sitting in the basement are also the UPR relo brackets which I'll add to the stock GT500 LCAs on my Brembo car, if necessary.
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Old 05-13-2012, 11:08 AM   #16
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What kind of noise does it transmit?
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Old 05-13-2012, 11:20 AM   #17
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Re: help with traction?

gear whine/rollover noise, sometimes clunks and bangs over bumps, particularly if you buy anything with Heim joints. Poly is a little less bad. You need commitment to max performance if you start fiddling with this area of the car.
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Old 05-13-2012, 11:31 AM   #18
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I heard that poly can split? Would I have to worry about that?
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Old 05-13-2012, 02:36 PM   #19
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Re: help with traction?

Yes. I've destroyed poly bushings on several cars over time and racing. You can generally just replace it, if the company that makes the part's still in business and making the same design.
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Old 05-13-2012, 02:41 PM   #20
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Well is there anything stronger than poly but not solid? Something in between?
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Old 05-13-2012, 03:16 PM   #21
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You have a manual car you want solid.
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Old 05-13-2012, 04:35 PM   #22
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Re: help with traction?

Well, there's Delrin. Keep in mind that the more you stiffen the rear up like this, the more you cripple the handling on-road, as you turn it into a push-then-snap twitchy roller skate.
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Old 05-13-2012, 04:42 PM   #23
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Originally Posted by 5LHO
Well, there's Delrin. Keep in mind that the more you stiffen the rear up like this, the more you cripple the handling on-road, as you turn it into a push-then-snap twitchy roller skate.
Regular driving is fine still. I had solid everything in rear, no sway bar front and bigs little's on manual and drove every day like that. On highway even at 80 taking turns with no issues.
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Old 05-13-2012, 06:17 PM   #24
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So what's the best ford both drag and road course?

---------- Post added at 06:17 PM ---------- Previous post was at 05:57 PM ----------

So if I stiffen up the rear do I soften up the front to over come the rear? What can can I do to launch good without hurting the cornering to bad?
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Old 05-13-2012, 06:48 PM   #25
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Re: help with traction?

You can't. Period. Full stop.

Two diametrically opposed sets of priorities. It sounds to me like you don't really know what you want to do with this car. Take some time, try it out as it is and then make a decision based on your real intentions and expectations and the revealed shortcomings from real-world activity.
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Old 05-13-2012, 06:54 PM   #26
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Well what hurts the other worse its my dd for now but they have road corse maybe four times a year and drag only 10 times a year I just the best overall set up
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Old 05-13-2012, 07:19 PM   #27
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Going fully adjustable everything is how over come it all. Coilovers etc.
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Old 05-13-2012, 07:47 PM   #28
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Re: help with traction?

I installed jpc upper on my car and no noticeable nvh don't let them scare you away from solid, haven't replaced bushing on rear just left stock piece on , and no need to replace upper bracket, 10's and earlier had smaller bolt holding upper in and it would move around as load changed, but 11's and later this was fixed with larger hardware.
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Old 05-13-2012, 07:49 PM   #29
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Re: help with traction?

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Any higher and I lose traction but yes only mods is 91 tune with steeda intake
If you bog, you need to go higher. Try somewhere between where you spun and where you bogged. 100RPM increments make huge differences in either direction.
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Old 05-14-2012, 05:45 AM   #30
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I launched at every rpm and at 3100 I spun and 3000 I didnt
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Old 05-14-2012, 05:54 AM   #31
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Quote:
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I launched at every rpm and at 3100 I spun and 3000 I didnt
Tell them to prep better.
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Old 05-14-2012, 06:31 AM   #32
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Quote:
Originally Posted by wnt2gofst

Tell them to prep better.
Haha that's funny they are actually trying there best but this time last year the track was under water because of the worst flood this place ever seen so I think later this year it will get better but I think for now I'm going to try the solid upper control arm set it a -1. That and try slipping the clutch at launch and see if that helps. I odered o/r hipe so that will get me a lil more power so I can hopefully make it down there track faster with a low launch at this track
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Old 05-14-2012, 08:23 AM   #33
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Re: help with traction?

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Originally Posted by Mweigt07 View Post
I launched at every rpm and at 3100 I spun and 3000 I didnt
Try 3050. Or 3100 but throttle modulation.
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Old 05-14-2012, 08:44 AM   #34
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Yeah I need to work the throttle a lot more I never raced a manual before so this is new to me( track I mean been driving a stick forever). I just might get the 2 step so I can launch steady every time but I don't know
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Old 05-14-2012, 08:51 AM   #35
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Re: help with traction?

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Originally Posted by Mweigt07 View Post
Yeah I need to work the throttle a lot more I never raced a manual before so this is new to me( track I mean been driving a stick forever). I just might get the 2 step so I can launch steady every time but I don't know
My best RPM was 2200 dump and punch and I have less power than you and wider, stickier tires (you are on stock wheels and tires right?) and I still spun. So I can imagine your traction issues. My best was 1.923 with a slight bog. I don't have a 4V though haha
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