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Author
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Topic: locked out timing
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Jerry Piner
Gearhead Posts: 224
From: staunton, va
Registered: Dec 2001
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posted 11-07-2005 11:51 AM
  
I know this has probably been covered before but what are the pros and cons of running timing locked out on a bracket car.
Also can this be done with a stock distributor, if so what is the process.
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Fastymz
Moderator Posts: 20708
From: Reno Nv USA M&M#1240
Registered: Apr 2001
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posted 11-07-2005 12:00 PM
Jerry these two links should help you,https://mustangsandmore.com/ubb/Forum12/HTML/001819.html https://mustangsandmore.com/ubb/Forum12/HTML/002433.html ------------------
oddly obsessed with big scoops on little Mustangs BIG Boss hood scoop
My Pics If your parents never had children, chances are you won't either.
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V8 Thumper
Gearhead Posts: 4652
From: Phoenix, Arizona
Registered: Dec 2001
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posted 11-07-2005 01:03 PM
I run mine locked out, you do need a very healthy starter motor and a strong battery. My cylinder heads like no more than 32-33* overall timing, so cranking it hot isn't a big deal. If you're running high-30's of timing with lots of cranking pressure, you may need a start retard module  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" 12.58/110 on street tires, more to come;) All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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Rory McNeil
Gearhead Posts: 1614
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 11-07-2005 03:27 PM
A car that runs much "locked" timing will benefit from a retard to pull some timing out during cranking, or a seperate ignition "on" switch, so you can get the engine spinning, and then activate the spark. Otherwise, a hot engine with a bunch of timing can be pretty tough to crank over. On both my 428 Fairmont, and 85 Mustang 302 Stocker, I run Ford Duraspark distributors with MSD boxes. In the distributors, I remove the heavier of the 2 mechanical advance springs, leaving only the weaker spring. This allows enough spring tension to bring the mechanical timing back, to allow for easy cranking, but at much over a fast idle, it`s "all in". Cheap & simple, works for me. I just run one normal size battery in each car (24 series in the Fairmonts trunk, a 54 series under the hood of the Mustang)and have no problems starting either car, hot or cold.------------------
78 Fairmont 428 4 speed [email protected] 1.32 60 foot
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA M/Stock 302 5speed. [email protected] 1.63 60 foot
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd [This message has been edited by Rory McNeil (edited 11-07-2005).]
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bbjay351
Gearhead Posts: 245
From: DeSoto, Mo Us
Registered: May 2004
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posted 11-07-2005 03:32 PM
I run a stock cleveland dist in mine that is locked out. I run 41.8* timing but, I do have all my accesories on switches. So I can run the starter and then hit the ignition after it cranks for a second or two. But I do have a optima red top battery running my car.[This message has been edited by bbjay351 (edited 11-07-2005).]
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70rancheroGT
Journeyman Posts: 25
From: Durham, NC
Registered: Mar 2005
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posted 11-07-2005 04:33 PM
Hey bbjay351, I'm a native of DeSoto, Mo myself. Graduated in 88. Used to race a Ch*vy on the street a little back then. I can only remember one guy running a clevo with a little nitrous in an early green stang with gold deck stripes. I want say his name was Sutton? How long have you been in DeSoto?
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bbjay351
Gearhead Posts: 245
From: DeSoto, Mo Us
Registered: May 2004
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posted 11-07-2005 11:01 PM
I think you're thinking of Mike Sutton. Mr. Go fast himself. I think that guy is one of the biggest ford guru's ever. I see him every once in awhile just in town. I've been here for about fifteen years now. But I graduated in 97.
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f100cleveland
Gearhead Posts: 363
From: St. James, MN
Registered: Sep 2004
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posted 11-07-2005 11:17 PM
I also run locked out timing on my 351c. I run about 35 degrees total and have an MSD Digital 6 Plus box that has the 20 degree start retard built into it. Works very well, sometimes if my rpm jumps up too quick while turning over, the box will give the ignition full advance and the engine will try to kick back. Only happens rarely though. I tried locked out timing without a retard and it works, but really makes the starter struggle.------------------
1982 Ford F100 2wd Shortbox. Powered by a 357 Cleveland w/ closed chamber 4v's and a Funnelweb. Full Roller c-6 trans with Gear Vendors Overdrive and 4.86 geared Detroit Locker equipped 9" rear. 329.1 RWHP and 299.3 RWTQ 1982 F100 351c 4v 1977 F150 460 Burnout Truck
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steve'66
Gearhead Posts: 9489
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 11-08-2005 12:02 AM
My car is a 500 c.i. 12-1 motor that fires fine with an MSD digital 6+ box with the start retard. Locked out at 35 degrees too.SteveW
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ericcasas
Journeyman Posts: 49
From: Austin, TX
Registered: May 2005
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posted 11-08-2005 09:33 AM
I know that locking it out fixes the timing at a set interval instead of letting it ramp up, but what is the advantage? Why do this?-Eric
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bbjay351
Gearhead Posts: 245
From: DeSoto, Mo Us
Registered: May 2004
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posted 11-08-2005 11:02 AM
There are a couple of reasons I do this. One, you don't have to mess with points. Two, you don't have to worry about vaccum. You can set the timing to where your car runs the hardest and it's always there. But, if you don't have a timing retard module or your ignition on a switch, it's kinda hard on starters and hot starts. For me, it just makes the tuning a little more simple.
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ericcasas
Journeyman Posts: 49
From: Austin, TX
Registered: May 2005
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posted 11-08-2005 12:42 PM
I see. I'm running a Mallory Comp 9000 w/ laser pick up (no points) with centrifugal advance (no vacuum). I guess there is no point for me to experiment with this. -E
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