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Need Caltrac set-up advice. with video #455631
08/31/09 03:57 PM
08/31/09 03:57 PM
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Newfoundland
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codfish Offline OP
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68 Dart. 3500lbs with me

500HP maybe??

Stroked RB
11.2-1 comp
Straightline cam .540 lift 307/318 250/263 @ .050
RPM intake with Biggs stage 3 850DP
OOTB Edelbrock RPM heads 84cc
Full MSD ignition timing 36* total by 2200 rpm
2" TTIs, 3" x-pipe and Ultraflows

727 filled with CRT stuff
reverse manual VB
PTC 9.5" converter 3800 stall

Dana 60 with 3.73s

MT 325-50-15 ET street drag radials

Caltracs, mono leafs, and Rancho 9 way adjustables. CE 90/10 shocks up front.

What would be a good starting point to set the caltrac setup?

Yesterday, my fisrt run of the day gave me a best 60 of 1.63.

I had 18 lbs in the tires, and did a "light" burnout. About 2 flats of preload on the caltracs, and Ranchos set on 8. The bar is in the top hole in the front.

This is airport racing mind you, so traction isn't what most of you guys are used to i'm sure. I just think it should be better.

Best ET was 7.33 @ 95 mph.

Going from a marginally hooking track, to a real track with good traction, would the settings need to be changed? Or once the set-up is dialed in for a given car, it should work evertwhere. This is all new to me.

Thanks for the help.

Here is a poor quality vid too.



codfish

Re: Need Caltrac set-up advice. with video [Re: codfish] #455632
08/31/09 04:19 PM
08/31/09 04:19 PM
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Wellington, FL
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cudabunch Offline
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I cant see in the video if its spinning the tire or not, so if its not spinning take the tow flats out.
If it is spinning the tire, drop the shocks down to 5 and keep the preload.
I would also try the front of the Cal Trac in the bottom hole to see what it does.
I would also get rid of the CE shocks and get a better front shock

Re: Need Caltrac set-up advice. with video [Re: cudabunch] #455633
08/31/09 05:04 PM
08/31/09 05:04 PM
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codfish Offline OP
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Tires were spinning.

On a not too good track, would you need to set it up for a harder or softer "hit"? Softer right?

codfish

Re: Need Caltrac set-up advice. with video [Re: cudabunch] #455634
08/31/09 05:06 PM
08/31/09 05:06 PM
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Ontario, Canada
Dodgem Offline
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looked good to me I would leave things as they are for now about what I like 7 to 8 on the shocks and 2 to 6 flats of preload
Kinda on an 11.4 ish run so if you spun not more that a turn or two. good track you may find your set up is bang on.

Re: Need Caltrac set-up advice. with video [Re: Dodgem] #455635
08/31/09 05:09 PM
08/31/09 05:09 PM
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Ontario, Canada
Dodgem Offline
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shifting low??
what size and kind of tires.
I like my timing 38 all in by 1200 to 1500??

Re: Need Caltrac set-up advice. with video [Re: Dodgem] #455636
08/31/09 05:16 PM
08/31/09 05:16 PM
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codfish Offline OP
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Shifting at 5700.

Tires are MT ET street drag radials. 28 tall, 13 ish wide.

I'm sure the 3.73s aren't helping, but this is a street car. Gotta drive it everywhere so SOME streetability is good.

Going to Minot ND in a couple of weeks to their track so hopefully I'll see some better numbers there. With the old smallblock combo, I picked up nearly 3 tenths going from here to there. Hope to see at least a couple of tenths anyhow. Or maybe this is all it's got.

codfish

Re: Need Caltrac set-up advice. with video [Re: codfish] #455637
08/31/09 06:13 PM
08/31/09 06:13 PM
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Deerfield, Ohio
70dusterjohn Offline
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I would change the bar to the lower hole.. You might need to loosen the shocks up a little. I start a 5 and work up from there. You just want it not to spin.. Harder is better. I gained a tenth and a half by going stiffer on the shocks.

Re: Need Caltrac set-up advice. with video [Re: 70dusterjohn] #455638
08/31/09 07:59 PM
08/31/09 07:59 PM
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Salisbury North Carolina
8secDart Offline
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Put M/T et streets on it.The radials suck for this type racing.You are way off on the caltrac setting.

Last edited by 8secDart; 08/31/09 08:02 PM.
Re: Need Caltrac set-up advice. with video [Re: 8secDart] #455639
08/31/09 08:20 PM
08/31/09 08:20 PM
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codfish Offline OP
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If I'm way off on the settings, what do you recommend?

Re: Need Caltrac set-up advice. with video [Re: codfish] #455640
08/31/09 08:24 PM
08/31/09 08:24 PM
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Salisbury North Carolina
8secDart Offline
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PM sent.

Re: Need Caltrac set-up advice. with video [Re: codfish] #455641
08/31/09 08:25 PM
08/31/09 08:25 PM
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Deerfield, Ohio
70dusterjohn Offline
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As I stated above, my car hooked the best in the bottom hole.. Two flats of pre load is a good starting point. I just have the drivers side touching and the passenger side has two flats.. The shocks are set on 8, but on bad tracks I still need to play around with it.. Your going to have to play with the settings but what I stated above is a good start point..

Re: Need Caltrac set-up advice. with video [Re: 70dusterjohn] #455642
08/31/09 08:35 PM
08/31/09 08:35 PM
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8secDart Offline
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With a radail tire never lossen the rear shock.It needs to be as stiff as you can get it.Lenny

Re: Need Caltrac set-up advice. with video [Re: codfish] #455643
08/31/09 08:42 PM
08/31/09 08:42 PM
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69CHARGERMD Offline
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This is with bar in lower hole,,,shocks on 7,,,front shocks loose,,,,

60' 1.42 (old video from last year) (best 60' is 1.40)

I still think my car leaves like a brick,,,lol

i have since taken 45 lbs off the front,,re-did the Caltracs a bit....
also lowered the front so i get about 5" of travel...

we'll see.......no new video yet.........below is some old video,,,

http://s212.photobucket.com/albums/cc79/69CHARGERMD/?action=view&current=MVI_1713.flv

http://s212.photobucket.com/albums/cc79/69CHARGERMD/?action=view&current=MVI_1711.flv

Last edited by 69CHARGERMD; 08/31/09 08:48 PM.
Re: Need Caltrac set-up advice. with video [Re: 69CHARGERMD] #455644
09/01/09 11:05 AM
09/01/09 11:05 AM
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codfish Offline OP
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Thanks for the replies and videos. You car looks awesome . My favorite and hopefully next body style. What was your ET btw?

I think I may leave it as is for the next race. Run a couple of passes as is to try and establish some sort of base line, and then probably drop to the bottom hole, leave the shocks as is, and see what happens.

codfish

Last edited by codfish; 09/01/09 11:07 AM.
Re: Need Caltrac set-up advice. with video [Re: codfish] #455645
09/01/09 11:19 AM
09/01/09 11:19 AM
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Dodgem Offline
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Quote:

Thanks for the replies and videos. You car looks awesome . My favorite and hopefully next body style. What was your ET btw?

I think I may leave it as is for the next race. Run a couple of passes as is to try and establish some sort of base line, and then probably drop to the bottom hole, leave the shocks as is, and see what happens.

codfish




that is wise you set it up pretty much the way john would have told you on the phone. I can see a couple three tents on a good track and IMHO you should be shifting 6200 to 6500

Last edited by Dodgem; 09/01/09 11:20 AM.
Re: Need Caltrac set-up advice. with video [Re: cudabunch] #455646
09/02/09 11:09 PM
09/02/09 11:09 PM
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codfish Offline OP
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Quote:

I would also get rid of the CE shocks and get a better front shock




Anyone use the Calvert front 90-10 shocks? Any good?

codfish

Re: Need Caltrac set-up advice. with video [Re: codfish] #455647
09/03/09 01:42 PM
09/03/09 01:42 PM
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69CHARGERMD Offline
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I have QA-1 shocks up front,,,but have heard the Calvert shocks are good.

ET so far,,10.26 @ 130MPH 1/4 mile,,, (6.47 @ 105MPH 1/8 mile)

Re: Need Caltrac set-up advice. with video [Re: codfish] #455648
09/03/09 02:29 PM
09/03/09 02:29 PM
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Dodgem Offline
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Quote:

Quote:

I would also get rid of the CE shocks and get a better front shock




Anyone use the Calvert front 90-10 shocks? Any good?

codfish




I love mine and bought three other brands first!!!

Re: Need Caltrac set-up advice. with video [Re: Dodgem] #455649
09/03/09 10:04 PM
09/03/09 10:04 PM
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codfish Offline OP
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Think I'm going to order a set, but I doubt I'll receive them by next weekend. But I can hope.

codfish







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