Re: Race timing
[Re: RustyM]
#2741391
02/09/20 09:28 PM
02/09/20 09:28 PM
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Joined: May 2014
Posts: 179 California, U.S.A.
Torquemonster440
member
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member
Joined: May 2014
Posts: 179
California, U.S.A.
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Race only, I'd say lock it out and forget it. If all you're concerned with is wot, locked out seems like the ticket to me.
1966 Satellie.. 12.55 @107.75. 906 heads. 3780 lbs.
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Re: Race timing
[Re: RustyM]
#2741401
02/09/20 09:51 PM
02/09/20 09:51 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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master
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Posts: 4,457
Washington
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Msd dist/ 511/ carb - run the fast springs for timing all in early or lock out the dist. - race only car. Thanks If you lock it out and your box retards with RPM you'll be losing power from retarded timing with RPM.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Race timing
[Re: madscientist]
#2741538
02/10/20 12:32 PM
02/10/20 12:32 PM
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Joined: Feb 2017
Posts: 566 Texas
RustyM
OP
mopar
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OP
mopar
Joined: Feb 2017
Posts: 566
Texas
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I've read some articles on the timing retard issues, not sure which boxes do it though- this one is a msd 6al.
Last edited by RustyM; 02/10/20 12:34 PM.
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Re: Race timing
[Re: madscientist]
#2741584
02/10/20 03:09 PM
02/10/20 03:09 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
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State of confusion
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Yep called slew rate and mine looses about 1 degree every 1000 rpm's towards max...........
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.....
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Re: Race timing
[Re: Thumperdart]
#2741597
02/10/20 03:32 PM
02/10/20 03:32 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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master
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Washington
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Yep called slew rate and mine looses about 1 degree every 1000 rpm's towards max........... Which box are you using Dom?
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Race timing
[Re: RustyM]
#2741603
02/10/20 03:47 PM
02/10/20 03:47 PM
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Joined: Jan 2003
Posts: 13,374 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
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Marion, South Carolina [><]
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I have done them both ways, not much difference IMO. My cuda has it locked out w/ a crank trigger. No start retard, cranks fine at 34°. It's an 11:1 compression 575" hemi. My road runner has the lightest springs and is set at 38°. It cranks w/ less than 38°, but as soon as it fires...it's at 38°. Ran it for years w/ a 14:1 446" wedge and locked out timing. Never really had any starting issues, but I have big cables and high torque mini starters on both cars.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Race timing
[Re: madscientist]
#2741606
02/10/20 03:50 PM
02/10/20 03:50 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
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Posts: 19,318
State of confusion
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OLD 6200 MSD 6 series w/no chip...........
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.....
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Re: Race timing
[Re: Thumperdart]
#2741620
02/10/20 04:26 PM
02/10/20 04:26 PM
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Joined: Dec 2005
Posts: 11,611 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,611
Fulton County, PA
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Big cam = lock it out. Sooo much better idle quality and response. Nice clean idle in gear @ 800RPM. It's a PIA chasing the adjustments with the timing moving around when it has a 15* curve and it's all in at 1500. If it's all in at 1500, why not just lock it and have the clean idle. Any retard needed, do it electronically.
If the results don't match the theory, change the theory.
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Re: Race timing
[Re: Thumperdart]
#2741628
02/10/20 04:45 PM
02/10/20 04:45 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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Washington
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OLD 6200 MSD 6 series w/no chip........... Thanks for the info Dom.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Race timing
[Re: Cab_Burge]
#2742007
02/11/20 04:20 PM
02/11/20 04:20 PM
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Joined: Mar 2006
Posts: 9,852 MI, usa
dvw
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master
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MI, usa
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If you don't have a separate starter switch to spin the motor over before turning on the ignition or a ECIU that won't allow the coil to fire until the crankshaft has spun over several times before firing the plugs good luck on getting any motor started that has a lock out distributor with more than 24 degrees total timing Mine starts at 34 degrees no issue, 15-1, ignition on. Actually starts better with ignition on. 1 revolution and it's running. No crank, crank, crank.
Last edited by dvw; 02/11/20 09:45 PM.
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Re: Race timing
[Re: dvw]
#2742068
02/11/20 08:08 PM
02/11/20 08:08 PM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Does your ECU allow the motor to spin over before allowing the ignition to fire the plugs?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Race timing
[Re: CMcAllister]
#2742084
02/11/20 09:07 PM
02/11/20 09:07 PM
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Joined: Sep 2005
Posts: 621 Deep DEEP SOUTH
LAD 524
mopar
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mopar
Joined: Sep 2005
Posts: 621
Deep DEEP SOUTH
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Big cam = lock it out. Sooo much better idle quality and response. Nice clean idle in gear @ 800RPM. It's a PIA chasing the adjustments with the timing moving around when it has a 15* curve and it's all in at 1500. If it's all in at 1500, why not just lock it and have the clean idle. Any retard needed, do it electronically. Interesting thread , mine is locked out as well, MSD digital 6 box has a start retard built into the box, zero issues. Im curious, what MSD electronics would hook up to the MSD digital 6 box w/ crank trigger to enable electronic timing control from inside the car?
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