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 09-05-2017, 03:51 PM   #1
Capuano
Member
 
Join Date: Aug 2012
Location: Williamsburg, Va
Posts: 30
Smile Manually cranking 1940 Ford V8 /engine in car?

Removed my crank mounted fan. Purchased 1 3/8" 6 point socket to try to turn ratchet nut. Socket OD to big to fit on ratchet nut? OK how do you turn over the engine manually with the spark plugs removed when it is in the car? Is a ratchet tool out there?????
Capuano is offline   Reply With Quote
Old 09-05-2017, 03:57 PM   #2
jimTN
Senior Member
 
Join Date: May 2010
Location: Powell, TN
Posts: 2,059
Default Re: Manually cranking 1940 Ford V8 /engine in car?

If you cannot turn it by the fan with the plugs out, something is wrong.
jimTN is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 09-05-2017, 04:06 PM   #3
Paul Bennett
Senior Member
 
Join Date: Sep 2016
Posts: 619
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Fill the spark plug holes with MMO Marvel Mystery Oil and let it set overnight + first.
Paul Bennett is offline   Reply With Quote
Old 09-05-2017, 04:11 PM   #4
Capuano
Member
 
Join Date: Aug 2012
Location: Williamsburg, Va
Posts: 30
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Thank you very much. I just put in a new starter motor. Other than that the car started and turned over easily. I will remove the starter motor and try again.
Capuano is offline   Reply With Quote
Old 09-05-2017, 04:11 PM   #5
Kube
Senior Member
 
Kube's Avatar
 
Join Date: May 2010
Location: Wisconsin, USA
Posts: 6,241
Default Re: Manually cranking 1940 Ford V8 /engine in car?

QUOTE
I just put in a new starter motor. Other than that the car started and turned over easily. I will remove the starter motor and try again.

Well this is beginning to make a bunch more sense now.
If the engine turned over before you installed the new starter and now it does not... has to be something related to the starter and / or installation thereof.
__________________
"I can explain it for you. However, I can't understand it for you".
Kube is offline   Reply With Quote
Old 09-05-2017, 05:15 PM   #6
deuce_roadster
Senior Member
 
deuce_roadster's Avatar
 
Join Date: Oct 2011
Location: Shelton, WA
Posts: 2,741
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Just a note of caution. You would NEVER attempt to start a flathead with a socket on the crank nut. The original nut (made to hand crank) had a way to disengage and kick the crank extension out when fired up. All of us have moved the crank with a socket when a running engine was not a possibility. It could be real exciting on an engine that could start with a breaker bar!
deuce_roadster is offline   Reply With Quote
Old 09-06-2017, 01:13 PM   #7
super flat
Senior Member
 
super flat's Avatar
 
Join Date: Jan 2011
Location: west bend wi
Posts: 303
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Did you put different bolts in the starter mounts, possibly to long?
__________________
I am usually relatively happy------Gary
super flat is offline   Reply With Quote
Old 09-06-2017, 01:17 PM   #8
supereal
Senior Member
 
supereal's Avatar
 
Join Date: Jul 2014
Location: Iowa
Posts: 1,468
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Ford used a "ratchet nut" in cars and truck from 1928 thru 1953. It allowed a hand crank to turn the engine over, and disconnect it when the engine started so as to prevent damage to the person doing the cranking. If you need one, they are available in the 6319 category with a "B" prefix for early engines, and 81A for the rest. The same nut was used even after there was no front access hole in the body or radiator.
supereal is offline   Reply With Quote
Old 09-06-2017, 02:54 PM   #9
chap52
Senior Member
 
chap52's Avatar
 
Join Date: Jun 2013
Location: Marana Arizona
Posts: 1,605
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Your on the right track. Go back to what you did just before things went bad.
With the plugs out that engine should turn easily with a socket and breaker bar.
Please keep us posted.
chap52 is offline   Reply With Quote
Old 09-06-2017, 03:34 PM   #10
Bruce Lancaster
Senior Member
 
Join Date: May 2010
Location: Madison, NJ
Posts: 5,230
Default Re: Manually cranking 1940 Ford V8 /engine in car?

The long-crankshaft engines, 1939 up, use a crank nut that is 1 1/8 hex, not the 1/38 early one.
Most good brand ones will go on there but due to short hex within the socket most only partially grip so you need to turn carefully. You should be able to rotate the engine within the limitations of the grip.
Bruce Lancaster is offline   Reply With Quote
Old 09-06-2017, 04:11 PM   #11
A bones
Senior Member
 
A bones's Avatar
 
Join Date: May 2010
Location: CLAYTON DE
Posts: 1,011
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Sorry I didn't get here sooner. To turn an engine, with out crank access, jack one rear tire up off the ground. Easier of course without plugs. Place trans in gear (low for ease, high for more movement). The elevated tire is now your crank. Good Luck

Forgot to mention wheel chocks, and o'course hand brake released.
__________________
Enjoy yer day. Tom
Hate can't fix what it started.

Last edited by A bones; 09-06-2017 at 04:15 PM. Reason: PS
A bones is offline   Reply With Quote
Old 09-06-2017, 04:22 PM   #12
40 Deluxe
Senior Member
 
Join Date: May 2010
Location: now Kuna, Idaho
Posts: 3,386
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Quote:
Originally Posted by A bones View Post
Sorry I didn't get here sooner. To turn an engine, with out crank access, jack one rear tire up off the ground. Easier of course without plugs. Place trans in gear (low for ease, high for more movement). The elevated tire is now your crank. Good Luck

Forgot to mention wheel chocks, and o'course hand brake released.
Actually, it's the opposite. Put the trans in high gear for easier turning and less movement. In low gear the engine turns roughly 3 turns for one turn of the driveshaft. So if you use the wheel to turn the driveshaft one turn, you will have turned the engine 3 turns (with great effort).
40 Deluxe is offline   Reply With Quote
Old 09-06-2017, 09:10 PM   #13
A bones
Senior Member
 
A bones's Avatar
 
Join Date: May 2010
Location: CLAYTON DE
Posts: 1,011
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Quote:
Originally Posted by 40 Deluxe View Post
Actually, it's the opposite. Put the trans in high gear for easier turning and less movement. In low gear the engine turns roughly 3 turns for one turn of the driveshaft. So if you use the wheel to turn the driveshaft one turn, you will have turned the engine 3 turns (with great effort).
You got it right. Thanks for the fix. Pops always asked me if I was left handed, or did I carry my lunch. He knew. BOTH
__________________
Enjoy yer day. Tom
Hate can't fix what it started.
A bones is offline   Reply With Quote
Old 09-07-2017, 11:45 AM   #14
Capuano
Member
 
Join Date: Aug 2012
Location: Williamsburg, Va
Posts: 30
Default Re: Manually cranking 1940 Ford V8 /engine in car?

Gentlemen, thank you all for the responses. It is appreciated since I am just learning and what to do the work myself. I jumped ahead trying to use the crank ratchet nut. I have put back the fan and was able to crank the engine but like raising the rear wheel to turn the engine slowly in high gear to try and find TDC. May try bent brass rod or pressure/vacuum method before trying to remove head. Will communicate with Bubba on any details of the bent brass rod.
Capuano 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 02:20 AM.