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Author Topic:   Race car wiring
Flanndad
Member
posted April 01, 2003 08:19 AM
Can someone go over the wiring diagram for a race car.

What I have is a battery, ignition switch, starter push button, ford starter solenoid, alternator, high torque starter.

I never used the ford solenoid, having trouble, there are the two big studs thinking one from battery positve the other to the started, but what about the little studs that are labeled I & S. I'm thinking Ignition and Switch but not sure?

PLEASE HELP TEST AND TUNE APRIL 13th.....

racer17j
Member
posted April 01, 2003 08:48 AM
here you go i think that you just run the wire from your alturnator to the same side as your positive cable but not sure never used an alturnator before. this set up alows you to turn the motor over without it starting. it will not fire untill you turn the power switch on but if you push the button it will turn all day long good for setting valves and starting without lugging on the starter

[This message has been edited by racer17j (edited April 01, 2003).]

Flanndad
Member
posted April 01, 2003 09:51 AM
Thanks Racer17j,
One more question on the ford silenoid do you know if the wire from the pushbutton goes to the post marked S or I.

Thanks for the drawing I was real close..

racer17j
Member
posted April 01, 2003 10:19 AM
s just make sure the mounting holes are on the top and the push button wire and wire to the starter are on the left side


merlinmech2
Member
posted April 02, 2003 07:16 AM
starter button goes to the "s" terminal, "i" is not used. Then just connect the "s" terminal on your starter to the battery terminal (short jumper wire).


powerglides
Member
posted April 02, 2003 07:41 AM
The battery wire to the starter is only hot when starting instead of all the time. That's the only reason I can see. Just always done it that way. I guess I never asked if Fanndad was running a ford though. But if it's a chevy, that's the way I do it. Had a batt. wire burn on a header once. Makes a nice fireworks show for a little while


Flanndad
Member
posted April 02, 2003 03:01 PM
This is a Chevy, just heard the Ford solenoid was better on the chevy.
Keep it away from the heat.


dirtracer7
Member
posted April 02, 2003 07:01 PM
Flandad I run a ford with a solenoid and late model reduction starter .The battery is normaly on the left side of the solenoid and the starter is on the right side terminal.don't know if it makes a difference as compared to the diagram.I put a copper strip on the starter from small terminal to the big power feed. I just went with this set up for 10 lbs. lighter starter.


[IMG]

[This message has been edited by dirtracer7 (edited April 02, 2003).]

merlinmech2
Member
posted April 03, 2003 07:04 AM
Powerglides is right though, you don't NEED the ford solenoid. Your chevy solenoid is still working and subject to heat or other damage.


BK19
Member
posted April 03, 2003 07:53 AM
another advantage of the ford solinoid is when it comes to timing your motor you have accessable power for your timing light


WesternAuto17
Member
posted April 03, 2003 09:00 AM
If you crash and push the headers onto the starter, you'll be happy you have a Ford solenoid. Avoiding that spark show is the only advantage to the Ford/Chevy solenoid combo.


powerglides
Member
posted April 03, 2003 03:08 PM
powerglides I here you on the no alt .I use golf cart 6v batts.in series can run 3 nights without charging and I use a dual electric fan.Batteries are mounted over the rear axle in a tray so I can move them easily at the track if I want to change weight location.


WesternAuto17
Member
posted April 04, 2003 08:45 AM
This alternator subject has been hotly debated many times.

My opinion is that a alternator is simpler than having to charge the thing all time. I have an MSD module in my HEI and I know that even stock HEI's don't like to be low on voltage.

wrenchjockey
Member
posted April 05, 2003 09:29 AM
Has anyone ever had the opportunity to run an engine on a dyno with and then without the alternator to determine how much horsepower you're losing by turning the alt. pulley? It would seem to me that knowing this would end this debate once and for all. I'm guessing it isn't much.


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