New Best in the 10's and 4-Link Q's.....
#1028619
07/09/11 12:28 AM
07/09/11 12:28 AM
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Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
Dragula
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I Live Here
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OP
I Live Here
Joined: May 2004
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Taxes & Virus's R-US, NY
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Well it alive and back in action. For any that know what happened to the car last week, the trans exploded in spectacular fashion and Paul got hurt and ended up in the ER with 2 breaks in his foot and probably needs surgey, but should be ok. I was supposed to be driving, but glad I wasn't. It now has a sheild on it, and a new trans, new floor, lots of new stuff and the steering column was moved to be above the knee bar.. First, I will say this, I have never, until today, run 10's....I made three runs in the car today, the first one was a feeler to get an idea, and the next two I stepped on it. I ran a 10.76, a 10.56 and a 10.56 at 127.98. Here is the kicker, the 60ft is only 1.54 and the car is unloading and pulling to the right off the launch. Its a four link, and I am thinking based on what the chassis guy said of lengthing the upper left bar, does this sound right, nevr had a 4-link before? Also, what tire pressure in a 17x33 slick in a door car? 
Last edited by Dragula; 07/09/11 12:45 AM.
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Re: New Best in the 10's and 4-Link Q's.....
[Re: 70blackfish]
#1028621
07/09/11 09:04 AM
07/09/11 09:04 AM
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Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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This is how I set my car up initially. I adjusted all the bars so they were the same length. The bottom bars pretty much just set the wheelbase. I then adjust the top bars evenly to get about 1 degree of pinion angle (I like to have some angle just to work the joint). Then I jack the rear up on the driveshaft hoop and set the front end height so it sits level. Then I let the rear down and jack the front end up on a piece of tubing so it can lean either way until the front tires just barely touch. Then shorten the top right bar until I get the right front tire 1.5 inches off the ground when the left front is just touching. Recenter the rear end if you're using a track locator bar. Depending on how much power you're making you may need to add more preload or take some out. I also found it's important to recenter the rear when using a track locator bar after each adjustment.
This should get you in the ball park.
As for tire pressure you'll have to experiment. I started with 9 pounds in mine and then changed it in .5 pound increments to get my best 60' time.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: New Best in the 10's and 4-Link Q's.....
[Re: Dragula]
#1028622
07/09/11 09:07 AM
07/09/11 09:07 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Well it alive and back in action. For any that know what happened to the car last week, the trans exploded in spectacular fashion and Paul got hurt and ended up in the ER with 2 breaks in his foot and probably needs surgey, but should be ok. I was supposed to be driving, but glad I wasn't.
It now has a sheild on it, and a new trans, new floor, lots of new stuff and the steering column was moved to be above the knee bar..
First, I will say this, I have never, until today, run 10's....I made three runs in the car today, the first one was a feeler to get an idea, and the next two I stepped on it. I ran a 10.76, a 10.56 and a 10.56 at 127.98. Here is the kicker, the 60ft is only 1.54 and the car is unloading and pulling to the right off the launch. Its a four link, and I am thinking based on what the chassis guy said of lengthing the upper left bar, does this sound right, nevr had a 4-link before?
Also, what tire pressure in a 17x33 slick in a door car?
When you SHORTEN the upper right bar it pushes down
harder on the right rear tire... thats how we adjust
more pre-load into it... pre-load is added to correct
a launch issue(pulling to the right)... I would say
you need a anti roll bar if its not pulling to the
right on the launch.... but from the sounds of it...
it should be pulling hard right and adding pre-load
should/would correct it... myself I'm a FIRM
believer in the anti-roll bar on a 4-link
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Re: New Best in the 10's and 4-Link Q's.....
[Re: MR_P_BODY]
#1028623
07/09/11 11:03 AM
07/09/11 11:03 AM
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Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
Dragula
OP
I Live Here
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OP
I Live Here
Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
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When you SHORTEN the upper right bar it pushes down harder on the right rear tire... thats how we adjust more pre-load into it... pre-load is added to correct a launch issue(pulling to the right)... I would say you need a anti roll bar if its not pulling to the right on the launch.... but from the sounds of it... it should be pulling hard right and adding pre-load should/would correct it... myself I'm a FIRM believer in the anti-roll bar on a 4-link
We may run the Gasser series race today and I want to try correcting it this morning, but what your saying is since it pulls right, and the left tire is planted better, pre load the right more by shortening the upper right bar, correct?
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Re: New Best in the 10's and 4-Link Q's.....
[Re: moparmxz]
#1028625
07/09/11 12:00 PM
07/09/11 12:00 PM
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Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
Dragula
OP
I Live Here
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OP
I Live Here
Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
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Quote:
The front of the car looks a little high to me,do you have any frontend travel left or is it against the stops.You should be able to jack the frontend up with a jack about 4 or 5 inches before the tires lift off the ground. 
That pic is a couple weeks old. Its been to the chassis shop and sits a lot different now. It has new rear springs, different shock location, changed the pinion angle, etc....Just pulls right on the launch everytime.
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Re: New Best in the 10's and 4-Link Q's.....
[Re: Dragula]
#1028627
07/09/11 12:51 PM
07/09/11 12:51 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
When you SHORTEN the upper right bar it pushes down
harder on the right rear tire... thats how we adjust
more pre-load into it... pre-load is added to correct
a launch issue(pulling to the right)... I would say
you need a anti roll bar if its not pulling to the
right on the launch.... but from the sounds of it...
it should be pulling hard right and adding pre-load
should/would correct it... myself I'm a FIRM
believer in the anti-roll bar on a 4-link
We may run the Gasser series race today and I want to try correcting it this morning, but what your saying is since it pulls right, and the left tire is planted better, pre load the right more by shortening the upper right bar, correct?
Yes
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Re: New Best in the 10's and 4-Link Q's.....
[Re: SB412DUSTER]
#1028630
07/09/11 07:35 PM
07/09/11 07:35 PM
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Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340
master
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master
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
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Quote:
Shorten the top right bar a flat or two
yea what he said 
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Re: New Best in the 10's and 4-Link Q's.....
[Re: fishy340]
#1028631
07/10/11 10:55 PM
07/10/11 10:55 PM
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Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
Dragula
OP
I Live Here
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OP
I Live Here
Joined: May 2004
Posts: 12,393
Taxes & Virus's R-US, NY
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Quote:
Quote:
Shorten the top right bar a flat or two
yea what he said
Will do. Didn't get to run Saturday as I had hoped, but we will next weekend.
Also, this is a pump gas ride, and we are looking to go very low 10's, stay tuned....
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