The Ford Barn

fordscript · 05-20-2010, 04:31 PM

It looks to me like a 'late' 38, or '39 standard' engine. The first 24 stud, 3- 1/16 bore. This is because it has the 'short' crankshaft, evident in the pic. It is possible that someone has cut off the end of the crank however.

19-c · 05-20-2010, 04:34 PM

I respect the knowledge that all of you have shared. I learned a lot through this thread thanks

Bruce Lancaster · 05-20-2010, 04:49 PM

Didn't even notice the crank! 19-c, the plugs are in the PAN RAIL, directly covered by the pan gasket. The bulges widen said rail to allow reoom for the plugs.
The short crank referred to was used 1936--38, a few '39 standars. It was lengthened and bearings enlarged for 1939, the lengthening to allow support for the new fan on crank location.

flatjack9 · 05-20-2010, 05:15 PM

The plugs are covered by the pan flange. And they are not frost plugs, they are core plugs. Used to remove the core sand from the block. However Ford did away with them in 1941, which is why when you really clean the water jackets of these old engines, you will still get lots of old sand out of those recesses.

19-c · 05-20-2010, 09:38 PM

Wow I had no clue! Interesting so Ive got sand in my motor lol

flatjack9 · 05-20-2010, 09:47 PM

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You'd be surprised how much junk comes out of those passages. I've got a variety of pokers and prods to go in a scratch that stuff out.

JM 35 Sedan · 05-21-2010, 06:23 AM

Quote:

Originally Posted by 19-c

The infamous bump. Nothing I can see resembles a frost plug as I am familiar with

You would need to remove the oil pan to see the plug(s). They are on the bottom of the pan rail. If they fail (pop out or rust away) you may have some coolant in your oil. The bumps on the outside of the block were probably necessary to provide wall thickness for the internal passageway to the plug holes. JM

PS...Well....I should have read pg 2 before I posted this. I didn't see all of the posts listed above that gave similar responses.

37 Coupe · 05-21-2010, 06:58 AM

I don't think they were designed as freeze plugs but were sand casting ports, to clean after block was cast and then plugged. A change in technology or engineering somehow eliminated these in 41 and thereafter in the flathead.

37 Coupe · 05-21-2010, 07:01 AM

Strange, when I wrote above reply none of the others were shown that explained core plugs.

05-20-2010, 04:31 PM	#21
fordscript Senior Member Join Date: May 2010 Location: Oamaru, New Zealand Posts: 419	Re: Help with Flathead Identification It looks to me like a 'late' 38, or '39 standard' engine. The first 24 stud, 3- 1/16 bore. This is because it has the 'short' crankshaft, evident in the pic. It is possible that someone has cut off the end of the crank however.

05-20-2010, 04:34 PM	#22
19-c Senior Member Join Date: May 2010 Location: Rapid City, SD Posts: 457	Re: Help with Flathead Identification I respect the knowledge that all of you have shared. I learned a lot through this thread thanks

05-20-2010, 04:49 PM	#23
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: Help with Flathead Identification Didn't even notice the crank! 19-c, the plugs are in the PAN RAIL, directly covered by the pan gasket. The bulges widen said rail to allow reoom for the plugs. The short crank referred to was used 1936--38, a few '39 standars. It was lengthened and bearings enlarged for 1939, the lengthening to allow support for the new fan on crank location.

05-20-2010, 05:15 PM	#24
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,527	Re: Help with Flathead Identification The plugs are covered by the pan flange. And they are not frost plugs, they are core plugs. Used to remove the core sand from the block. However Ford did away with them in 1941, which is why when you really clean the water jackets of these old engines, you will still get lots of old sand out of those recesses.

05-20-2010, 09:38 PM	#25
19-c Senior Member Join Date: May 2010 Location: Rapid City, SD Posts: 457	Re: Help with Flathead Identification Wow I had no clue! Interesting so Ive got sand in my motor lol

05-20-2010, 09:47 PM	#26
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,527	Re: Help with Flathead Identification Sponsored Links (Register now to hide all advertisements) You'd be surprised how much junk comes out of those passages. I've got a variety of pokers and prods to go in a scratch that stuff out.

05-21-2010, 06:58 AM	#28
37 Coupe Senior Member Join Date: May 2010 Posts: 1,835	Re: Help with Flathead Identification I don't think they were designed as freeze plugs but were sand casting ports, to clean after block was cast and then plugged. A change in technology or engineering somehow eliminated these in 41 and thereafter in the flathead. __________________ "Never complain,never explain"... Henry Ford II

05-21-2010, 07:01 AM	#29
37 Coupe Senior Member Join Date: May 2010 Posts: 1,835	Re: Help with Flathead Identification Strange, when I wrote above reply none of the others were shown that explained core plugs. __________________ "Never complain,never explain"... Henry Ford II