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F12 engine mounting bolts


 
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SadFarmall
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Joined: 17 Jan 2011
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Location: Bullengarook, Victoria, Australia

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PostPosted: Sun Dec 03, 2017 3:53 am    Post subject: F12 engine mounting bolts Reply to specific post Reply with quote

My F12 appears to have been treated very well in the past, but then fell into the hands of a someone who began to 'restore' it. As a result there are various bolts missing. I want to fit correct engine mounting bolts. So far as I can see from page 27 of the Parts Catalog, the front bolts, which fix the front engine support to the frame are ½ x 1½" (presumably UNC) and presumably with hex nut and spring washer. I cannot find the correct bolt listed for the bell housing to frame. I presume also ½" but ¾" or 1" longer?
Any help gratefully received.
SadFarmall
 
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DeltaRed
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Joined: 25 Feb 2010
Posts: 13776
Location: Delta,colorado

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PostPosted: Sun Dec 03, 2017 7:02 am    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

Pretty sure they are the same as the front.If too long,cut them off.However,for a "correct" 'restoration',use the original old style 'dot head' bolts.Common hardware store bolts are not 'right'.
 
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Oldiron29
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Joined: 22 Oct 2007
Posts: 1939
Location: Suffolk, NY

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PostPosted: Sun Dec 03, 2017 2:06 pm    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

You are correct on the fronts. The rears are longer because of the thickness of the bellhousing Still 1/2" I would say 2-1/2" long
Have seen early F-12 with square nuts and later with hex nuts.
 
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SadFarmall
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Location: Bullengarook, Victoria, Australia

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PostPosted: Sun Dec 03, 2017 4:53 pm    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

Thankyou! The previous owner fitted two mild steel bolts to the front and left the rear bolts out altogether. I was thinking about using Grade 5 bolts.
SadFarmall
 
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used red MN
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Joined: 24 Aug 2013
Posts: 740
Location: Coon Rapids, MN

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PostPosted: Mon Dec 04, 2017 10:11 am    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

If you are set on trying to do a correct restoration with the correct original bolts contact Mike at
Steel Wheel Ranch in KS at 785-548-7four37. If he doesn?t have any he will direct you to
someone that does.
 
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DC Snider
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Joined: 02 Jan 2008
Posts: 177
Location: Princeton, West Virginia

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PostPosted: Mon Dec 04, 2017 12:14 pm    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

I think the general consensus on "dot head" bolts were that they were first used in the very late 30's, perhaps '39 or so. You likely won't find any on an F series Farmall of any flavor. Many of the F series bolts were square head. To answer your original question though...I don't know. A quick gander through my F12 parts book doesn't show them either. For what it's worth mine had two square head bolts, which I replaced with new square head, grade 8 bolts from my local supplier.
 
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Oldiron29
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PostPosted: Mon Dec 04, 2017 12:45 pm    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

Sad, All I have seen are square head bolt, Grade 5 is fine.
Forget about this dot head stuff you couldn't get your head under there to see them if you tried. Bolt up from bottom Nuts on top.
 
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SadFarmall
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Location: Bullengarook, Victoria, Australia

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PostPosted: Tue Dec 05, 2017 2:11 am    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

Thank you! I think that will work just fine. It currently has a couple of 10mm mild steel bolts - motor might just fall out if I start it like that!
SadFarmall
 
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Dave Allgire
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PostPosted: Thu Dec 07, 2017 5:26 pm    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

I'm in the process of restoring a 1934 F-12 and just today removed the engine mounting bolts. The front ones are 1 1/2" and the rears are 2" long. And yes they are square head.
 
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SadFarmall
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Location: Bullengarook, Victoria, Australia

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PostPosted: Thu Dec 07, 2017 7:14 pm    Post subject: Re: F12 engine mounting bolts Reply to specific post Reply with quote

Thank you! That saves me some measuring! I will also note the length in my parts catalog. I started keeping an F12 workshop diary with information to make things easier for next time work has to be carried out (or I buy another F12!) This is the sort of data I put into it.
SadFarmall
 
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