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Suspension setup for street raicing...Need HELP! #2125640
08/05/16 12:34 PM
08/05/16 12:34 PM
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Oakland, MI
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dizuster Offline OP
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Oakland, MI
Hoping some of you street race guys can chime in about setups for racing on true unprepped roads.

Not talking about roll racing, stop light racing, etc... True trans brake release 1/8 mile stuff.

I am going to be doing the Roadkill event on Woodward in 2 weeks.

I'm GUESSING that the boost controller needs to get turned down, two step RPM down as far as I can get it, and loosen the rear shocks up to match the new lower "hit" power.

How about down track? How do you guys know how much power to pour into it, and how fast you can pour it on?

Will the track simply take a g-force limit, and you try to tune the power to get near that through 1st gear?

Power taken out on the 1/2 shift to keep it from spinning the tires?

Unfortunately I race this thing on radials which is obviously not the best marginal track tire, but I at least did buy a brand new set of 275 Pro's for the event.

Love to hear from some of you guys... PM's ok if you want to keep quiet about it.

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125658
08/05/16 12:55 PM
08/05/16 12:55 PM
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North Alabama
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Monte_Smith Offline
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Turbo car.......on small radials.......on a sketchy street surface.........good luck, LOL!!!!

You can make it leave, on out where you will want to be adding boost to make it run is going to be the issue.

Example. Friend here Dusty Bradford has the turbo Buick small tire car that was on Street Outlaws New Orleans. Car has been 4.30s, but for that show, he knocked the tune WAY back of course. Left OK but would not go down the road. He nearly crashed it. The tune he tried ran 5.40s at the track and was not close to going down that road

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125667
08/05/16 01:09 PM
08/05/16 01:09 PM
Joined: Sep 2012
Posts: 1,563
Janesville, WI
SpareParts Offline
pro stock
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Janesville, WI
Front end loose as hell, all the travel she can get. Keep rear end from separating too fast, hits tire too hard and spins. Concrete surfaces are your friend! Asphalt is way way more difficult. Test as much as you can. I would set tires to 18lbs

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125712
08/05/16 01:57 PM
08/05/16 01:57 PM
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Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Test,test and test some more on the road your going to be using twocents


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Suspension setup for street raicing...Need HELP! [Re: SpareParts] #2125716
08/05/16 02:01 PM
08/05/16 02:01 PM
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fullmetaljacket Offline
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DZuster. I know where you're going this summer. LOL.

Depending on where they set up the track will vary. I remember china rock concrete up there but also black tarmac at other points. I would pre-prep the tires with VHT the night before and if you are allowed, during the staging area sit ins as well, that way you are on Trident gum mode as much as possible.
I'll help you out if you need the extra hands.
Good luck.

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125749
08/05/16 02:54 PM
08/05/16 02:54 PM
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Posts: 20,762
A collage of whims
topside Offline
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topside  Offline
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A collage of whims
Current issue of Car Craft mag has an article on a traction control system.
If ya have the time & money, that might be your best friend.

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125758
08/05/16 03:04 PM
08/05/16 03:04 PM
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State of confusion
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Thumperdart Offline
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Can u run a slick or qtp..........


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125793
08/05/16 03:45 PM
08/05/16 03:45 PM
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Posts: 8,022
Tulsa OK
Bad340fish Offline
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Yes A Bias ply tire would be best I am sure.

Here is a pretty amazing vid of an 8.50 car getting down the street with Megasquirt traction control.

https://youtu.be/FembJNagxOE

Last edited by Bad340fish; 08/05/16 03:45 PM.

68 Barracuda Formula S 340
Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125835
08/05/16 04:22 PM
08/05/16 04:22 PM
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Portage,michigan
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B3422W5 Offline
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Put some pinion angle in the rear. I had mine down on my old Duster about 5 degrees( with S/S springs) and the thing hooked on ice.
Made a huge, huge difference just adding that shim.

Last edited by B3422W5; 08/05/16 04:22 PM.

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125845
08/05/16 04:32 PM
08/05/16 04:32 PM
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Oakland, MI
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dizuster Offline OP
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Bias is out of the question unfortunately. Custom shocks are already valved for radials, and new tires are already mounted. Race is in two weeks. DOT approved tires only. So there will be no time for any new traction control. Honestly the car works pretty well on the track on even the old style 275's. It will leave on 13~14psi, and 17~18psi total ramped in 0.3 sec was enough for 9.70's a few weeks ago.

I have plenty of control over the power, timing or boost.. I have g-meter and wheel speed to data log. Just looking for some direction what to do with that information as I test.

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2125925
08/05/16 06:28 PM
08/05/16 06:28 PM
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Posts: 3,978
Hilltown Pa
1967dartgt Offline
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Bias slicks and loose front end with lots of travel.


Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: Suspension setup for street raicing...Need HELP! [Re: Bad340fish] #2126509
08/06/16 12:59 PM
08/06/16 12:59 PM
Joined: Feb 2003
Posts: 1,942
Metro Detroit
OUTLAWD Offline
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Metro Detroit
Originally Posted By Bad340fish
Yes A Bias ply tire would be best I am sure.

Here is a pretty amazing vid of an 8.50 car getting down the street with Megasquirt traction control.

https://youtu.be/FembJNagxOE


Very cool!


Faster, Faster until the thrill of speed overcomes the fear of death...

71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater
Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2126968
08/07/16 07:37 AM
08/07/16 07:37 AM
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kansas
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farmboy Offline
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I run the 315 drag radials, big engine, little cam, lots of low end grunt. I put 300 lbs, weight in the trunk, and left in second gear. In Kansas City the track started out pretty slick, but was starting to come around later on in the day. Wheelspin was not a problem later on in the day, kinda wish I would have tried a low gear launch. Lack of a power adder is what cost me the win. A dialed in turbo car is hard to beat, but a Nox car is what got to me. Better have your cooling system in top shape. Good luck.

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2127057
08/07/16 12:04 PM
08/07/16 12:04 PM
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Oakland, MI
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dizuster Offline OP
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I thought about leaving in 2nd, but unfortunately my TB won't work in anything else but 1st. I need the TB to build boost.

The motor is pretty weak without the turbo, so it will definitely hook if I turn it down far enough. Just trying to use as much of everything I got to get the car down the track quick.

Last edited by dizuster; 08/07/16 12:05 PM.
Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2127072
08/07/16 12:31 PM
08/07/16 12:31 PM
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Posts: 1,942
Metro Detroit
OUTLAWD Offline
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Any means to fix ballast in the trunk? you are heavy enough, but it might help the initial transfer so you can ramp the power in. There are plenty of spots in "Mexico" where people test...


Faster, Faster until the thrill of speed overcomes the fear of death...

71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater
Re: Suspension setup for street raicing...Need HELP! [Re: farmboy] #2127216
08/07/16 04:42 PM
08/07/16 04:42 PM
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Wichita
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GY3 Offline
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Originally Posted By farmboy
I run the 315 drag radials, big engine, little cam, lots of low end grunt. I put 300 lbs, weight in the trunk, and left in second gear. In Kansas City the track started out pretty slick, but was starting to come around later on in the day. Wheelspin was not a problem later on in the day, kinda wish I would have tried a low gear launch. Lack of a power adder is what cost me the win. A dialed in turbo car is hard to beat, but a Nox car is what got to me. Better have your cooling system in top shape. Good luck.


farnboy was in the money with a 3rd place finish (despite a 3 way tie for 1st and being 2-0 against the eventual winner) at the Roadkill Nights in KC, FYI.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Suspension setup for street raicing...Need HELP! [Re: B3422W5] #2127998
08/08/16 04:55 PM
08/08/16 04:55 PM
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MN
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Originally Posted By B3422W5
Put some pinion angle in the rear. I had mine down on my old Duster about 5 degrees( with S/S springs) and the thing hooked on ice.
Made a huge, huge difference just adding that shim.


What in the world does pinion angle have to do with making the car hook?


69 GTX 68 Road Runner
Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2128132
08/08/16 08:06 PM
08/08/16 08:06 PM
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Dayton, OH
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1980volare Offline
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Order a set of quick time pros. Put tubes in them too. You'll be set.

Re: Suspension setup for street raicing...Need HELP! [Re: dizuster] #2128282
08/08/16 11:18 PM
08/08/16 11:18 PM
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Australia
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1963 Plymouth Max Wedge
1971 Barracuda
Re: Suspension setup for street raicing...Need HELP! [Re: ozymaxwedge] #2128558
08/09/16 11:33 AM
08/09/16 11:33 AM
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muskegon MI
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muskegon MI
Not to hijack but does anyone know if this is at the M1 concourse.
A friend and I are going to bring a 67 belv. over

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