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11-18-2018, 11:09 AM | #1 |
Junior Member
Join Date: Feb 2015
Location: Rosseau. Ontario
Posts: 16
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Unique bearing install
My ‘47 59AB is out for a rebuild and I received some photos of the bottom end. My engine builder has never seen this type of bearing use.
Looks like main bearings used as rod bearings. Ha anyone seen this type of install before? |
11-18-2018, 11:16 AM | #2 |
Senior Member
Join Date: May 2010
Location: Mt. Holly,NJ
Posts: 1,822
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Re: Unique bearing install
Looks like floating bearings used by Ford. Look for a new flathead rebuilder.
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11-18-2018, 11:32 AM | #3 |
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Join Date: May 2010
Location: So Cal
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Re: Unique bearing install
Not the person I would want working on my flathead.
Bob |
11-18-2018, 11:37 AM | #4 |
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Join Date: Nov 2015
Location: North Pole, Alaska
Posts: 2,646
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Re: Unique bearing install
I would definitely look for a builder familiar with flatheads. There is a lot of useful information on setting up these bearings in Ron(AKA Ol Ron on the Barn) Holleran’s book Nostalgia.
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11-18-2018, 11:41 AM | #5 |
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Join Date: May 2010
Location: East Hartford, Ct
Posts: 5,898
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Re: Unique bearing install
Sure look like all the ones I've seen for '39-'48 Fords.
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11-18-2018, 11:45 AM | #6 |
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Location: Santee, California
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Re: Unique bearing install
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11-18-2018, 11:54 AM | #7 |
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Join Date: May 2010
Location: Yucaipa, CA
Posts: 1,091
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Re: Unique bearing install
Your bearing install is not unique your engine builder is. That's flathead basics 101. Did he ask why you didn't bring the valve covers in too? I agree with the others. If he don't know this I doubt he has the flathead pilot to grind the valve seats.
Last edited by Flathead Fever; 11-18-2018 at 12:06 PM. |
11-18-2018, 12:51 PM | #8 | |
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Join Date: May 2010
Location: Canada Where it snows
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Re: Unique bearing install
Quote:
Have you spoken to anyone in Parry Sound R |
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11-18-2018, 01:54 PM | #9 |
Senior Member
Join Date: May 2017
Location: Arkansas
Posts: 611
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Re: Unique bearing install
I wouldn't want to disrespect the engine guy without knowing more, but this means he has no internet access, no books about Ford flatheads, and hasn't ever seen a pre 48 one. Or maybe it was just a momentary lapse.
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11-18-2018, 02:28 PM | #10 |
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Join Date: Jul 2016
Location: Lake worth Florida
Posts: 1,073
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Re: Unique bearing install
Please do not trust any machine shop , or mechanic that isn't well versed in common flathead parts .
I just enlarged the photo . I'd be more interested in the rod being peened over . It looks like it could of only happened at disassembly . |
11-18-2018, 02:41 PM | #11 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,842
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Re: Unique bearing install
These bearings must be fit to the crank and rods. You just can't take them out of the box and install them. I have a chapter in my book on this.
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11-18-2018, 10:32 PM | #12 |
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Join Date: May 2010
Location: Green Bay
Posts: 391
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Re: Unique bearing install
Buy Ol' Ron's book and you will understand how the bearings are fitted. I think Mac Van Pelt Sales http://www.vanpeltsales.com/ has the book. I would agree time for a new re-builder. Fitting full floating bearing is an art. Dave/Green Bay
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11-20-2018, 08:10 AM | #13 |
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Location: Central Ohio
Posts: 5,012
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Re: Unique bearing install
Hopefully you get the right information and the right builder to handle full-floating bearings. As Ron noted - it is imperative that they are correctly sized to float when they are replaced. Another alternative (depending on the crankshaft size) and if it has dual oil holes in the rod journals - is to switch to later 49-53 rods with tanged insert bearings (like modern engines).
While you may get through this issue, one has to wonder how much he knows about doing a flathead valve job correctly? Does he have the correct pilots to pickup the valve guide bore (not just a OHV pilot thrown into a loose-fitting flathead guide). Does he understand that valve angles and associated valve-to-deck dimensions are different side to side, etc. Does he know how to correctly balance flathead rods? You don't just grind on the bottoms of the caps like they do with modern rods with 'balance pads' on them. If he does not know these sorts of things and doesn't have the correct tools - you'd better find another builder or you stand to have issues (not guaranteed, but surely likely). I'm not trying to pick on your builder - but in the end, you probably don't want to be his "first" flathead build. |
11-20-2018, 12:52 PM | #14 |
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Location: Southern Maine
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Re: Unique bearing install
RUN!! It may not be too late to save this project!
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11-20-2018, 06:47 PM | #15 |
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Location: Perth, Western Australia
Posts: 2,687
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Re: Unique bearing install
Mmm I lost a crank from a shop that didnt know what they were doing. They were given instructions but they didnt understand [ said they'd done them before ...??] the floating bearings were stamped 30 / 10 . they just cut .040 off the crank..aghh..
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