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1
Post By A Snake
12-21-2002, 03:08 PM
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CC Member
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Join Date: Nov 2001
Location: Pittsburgh,
PA
Cobra Make, Engine: ERA FIA #2078. 331 stroker, sportsman block built by Evanuik Performance. 450hp
Posts: 256
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Not Ranked
Help: Spark plug wire routing
I know the yellow mark on the distributor indicates cylinder #1. Going clockwise from #1, what is the order that the wires go on. I've heard two different answers about this and want to be sure before we start cutting the wires. Engine is a 302 stroked to 331. MSD Pro-Billet Distributor.
Thanks,
Glenn Davis
Last edited by SSSnake; 12-21-2002 at 03:11 PM..
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12-21-2002, 03:41 PM
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Seasoned Member
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Join Date: Apr 1999
Location: Portsmouth,
VA
Cobra Make, Engine: Unique 427 S/C, Dart 427W "Replica" Ford engine
Posts: 584
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Not Ranked
IAW "How to rebuild small-block Ford engines" by Tom Monroe (a CC member, I understand) your firing order is 1-5-4-2-6-3-7-8.
Bill Stradtner
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12-21-2002, 03:47 PM
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CC Member
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Join Date: Nov 2001
Location: Pittsburgh,
PA
Cobra Make, Engine: ERA FIA #2078. 331 stroker, sportsman block built by Evanuik Performance. 450hp
Posts: 256
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Not Ranked
thanks bill
Is that going clockwise from the yellow mark on the distributor?
Glenn
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12-21-2002, 03:53 PM
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CC Member
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Join Date: Jul 2002
Location: Portland, OR area,
OR
Cobra Make, Engine: Contemporary CCX33868 Sold. Just "playin' the boards now."
Posts: 634
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Not Ranked
Also remember Fords and Chevs number the cylinders differently.
This is Ford
4 8
3 7
2 6
1 5
O <distributor
FRONT
Al
__________________
"If some is good, more is better.
And too much is just enough."
--Carroll Shelby
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12-21-2002, 03:55 PM
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CC Member
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Join Date: Nov 2001
Location: Pittsburgh,
PA
Cobra Make, Engine: ERA FIA #2078. 331 stroker, sportsman block built by Evanuik Performance. 450hp
Posts: 256
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Not Ranked
ASnake,
We've got the wires connected to the correct cylinders (exactly as you listed). I've just heard several different answers as to where they go on the distributor.
Thanks,
Glenn
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12-21-2002, 04:10 PM
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CC Member
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Join Date: Jul 2002
Location: Portland, OR area,
OR
Cobra Make, Engine: Contemporary CCX33868 Sold. Just "playin' the boards now."
Posts: 634
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Not Ranked
Counter clockwise from #1
You should also make sure #1 piston is at top dead center with rotor pointing at #1 on the cap.
With plugs out, hand rotate engine. Put a finger over #1 spark plug hole. You'll feel pressure when the piston is coming up. Keep going until no more air blows past your finger. Also, you should have a valve cover off to be able to check the rockers at the same time. When both rockers are loose (or the push rods will twist with your fingers with hyd.) and the air has quit, you're close enough. Next, with the dist. cap off, turn the dist. until the rotor points at where #1 will be with the cap on. Now the engine will start. The timing will be "late", but with your light, you'll be able to get it set right.
If you're firing the engine for the first time since rebuilt or new, don't crank and crank if it won't start with the first turn of the key. go back and check fuel, spark etc. and try again. when it does fire, bring it up to 2,500rpm and keep it there. DON'T let it idle for at least a half hour of running.
You should also have verified oiling before starting. Prime the system with a drill (distributor out) and make sure you have proper pressure before firing.
Al
__________________
"If some is good, more is better.
And too much is just enough."
--Carroll Shelby
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12-21-2002, 04:32 PM
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CC Member
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Join Date: Nov 2001
Location: Pittsburgh,
PA
Cobra Make, Engine: ERA FIA #2078. 331 stroker, sportsman block built by Evanuik Performance. 450hp
Posts: 256
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Not Ranked
The engine has already been run on the dyno. It is completely tuned and ready to go. We are just making a set of custom length spark plug wires and are not sure which plug goes where on the distributor.
Thanks
Glenn
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12-21-2002, 06:23 PM
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CC Member
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Join Date: Jul 2002
Location: Portland, OR area,
OR
Cobra Make, Engine: Contemporary CCX33868 Sold. Just "playin' the boards now."
Posts: 634
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Not Ranked
Sorry to waste your time with the "start-up" details.
Sounds like you're good to go. BTW a good thing to do later on if you decide to change wires again is to pull the cap and wires together and use them for a model on the new cap.
Have fun and Merry Christmas!
Al
__________________
"If some is good, more is better.
And too much is just enough."
--Carroll Shelby
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12-21-2002, 06:30 PM
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CC Member
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Join Date: Jun 2001
Location: Washington DC Metro (Virginia),
VA
Cobra Make, Engine: Classic Roadsters, Tweaked 351W, T-5Z, CRII Tech Support Team.
Posts: 1,895
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Not Ranked
Pre '85 289's and 302's used a different firing order than post '85 302's an all 351W's. What determines your firing order is your camshaft.
Find out from your cam Mfg. which firing order it uses, early, or late 302.
If that doesn't work, remove the valve covers, rotate the engine by hand and find out what the firing sequence is by the valve openings and closings.
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12-24-2002, 05:22 PM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Not Ranked
It'll be either 13726548 or 15426378 depends on your cam
__________________
In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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