Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 09-23-2020, 09:18 PM   #1
3739ford70
Junior Member
 
Join Date: Jul 2020
Posts: 8
Default wiring needed for a quick start 51 Flat in a 39 pickup

Hey guys
I just put a 1951 Flathead in my 39 1/2 ton. The original wiring is toast and there is no battery. I will do the wiring later but I need to be certain this motor is good. Turns over freely and has an old rebuild tag. looks clean inside looking in from the fuel pump hole. but that doesnt mean its all good.

What is the simplest way to wire up the 51 to run? I guess as if it was on a run stand. Would a 12V battery roast that starter? and coil? do i get a 6V battery?

Thanks!
3739ford70 is offline   Reply With Quote
Old 09-23-2020, 09:25 PM   #2
51504bat
Senior Member
 
51504bat's Avatar
 
Join Date: Sep 2013
Location: SoCal-Redlands
Posts: 1,602
Default Re: wiring needed for a quick start 51 Flat in a 39 pickup

12 volt battery. 12 volt internal resistance coil. Plastic boat fuel tank and a 12 volt electronic fuel pump. Disconnect all the other wiring. Wire it direct with a universal ignition switch and a 12 volt solenoid and you're off to the races. Your 6 volt starter will be fine.
__________________
Making the simple complicated for over 30 years.
51504bat is online now   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 09-23-2020, 09:34 PM   #3
3739ford70
Junior Member
 
Join Date: Jul 2020
Posts: 8
Default Re: wiring needed for a quick start 51 Flat in a 39 pickup

Thank you!
3739ford70 is offline   Reply With Quote
Old 09-23-2020, 10:04 PM   #4
JSeery
Senior Member
 
JSeery's Avatar
 
Join Date: Nov 2012
Location: Wichita KS
Posts: 15,059
Default Re: wiring needed for a quick start 51 Flat in a 39 pickup

Or use a ballast resistor with a 6v coil. You need an on/off switch to the coil, 3 ohm (referred to as a 12v) or a 1.5 ohm (referred to as a 6v) with a ballast resistor, and if using an original style starter solenoid, a wire from the center terminal that you can touch to ground to turn over the starter. The starter will hit a lot harder on 12v, but it will work fine. On the coils, all of this is assuming a "can" style coil, not an original Ford type of coil.
JSeery is online now   Reply With Quote
Old 09-23-2020, 10:16 PM   #5
3739ford70
Junior Member
 
Join Date: Jul 2020
Posts: 8
Default Re: wiring needed for a quick start 51 Flat in a 39 pickup

Ok The old 6v solenoid is there. The coil is a typical cylinder type like all through the 70's and 80's but it is crumbling. I have a MSD coil 12v may blow the cap off lol.
3739ford70 is offline   Reply With Quote
Old 09-23-2020, 11:51 PM   #6
JSeery
Senior Member
 
JSeery's Avatar
 
Join Date: Nov 2012
Location: Wichita KS
Posts: 15,059
Default Re: wiring needed for a quick start 51 Flat in a 39 pickup

Sponsored Links (Register now to hide all advertisements)
I would go with a new coil based on your final objective. If 12v then a 3.0 is easiest. If 6v then 1.5.
JSeery is online now   Reply With Quote
Old 09-24-2020, 10:28 AM   #7
GB SISSON
Senior Member
 
GB SISSON's Avatar
 
Join Date: Jan 2014
Location: Orcas Island Washington
Posts: 2,591
Default Re: wiring needed for a quick start 51 Flat in a 39 pickup

Some old style solenoids have a crank over button on the bottom. It will be a spring loaded rounded button. Just press it upward.
__________________
'47 1/2 ton pickup next project, '47 one ton panel 99% stock nearing completion, '47 2 ton with 8ba and 9' script stakebed, '46 1/2 ton woodie project,'59 F350 9' flareside pickup with cummins 6at. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)
GB SISSON is offline   Reply With Quote
Old 09-24-2020, 06:27 PM   #8
bobH
Senior Member
 
Join Date: May 2010
Location: so cal, placerville, vegas
Posts: 1,119
Default Re: wiring needed for a quick start 51 Flat in a 39 pickup

Regarding 'simplest way to wire'... I saw this thing running around a few days ago. It stopped at a parts store that I was at. It has a Ford radiator shell, so I'm sure it's ok to show it here. Talk about minimal wiring, this kid had a battery laying loose on the floor, next to where he sat. Cables to ground and the starter. One wire for the ignition, and one loose wire laying next to the battery (which he touched to the battery to operate the starter). I don't think you could get much simpler that this. And, this is the way he was driving it.
Attached Images
File Type: jpg output (8).jpg (113.1 KB, 20 views)
bobH is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 02:10 PM.