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06-01-2016, 04:48 PM
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#1 |
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Junior Member
Join Date: Nov 2015
Posts: 14
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Socket size for connecting rod cap bolts on A Engine
Working on my old Model A block today and got the oil pan removed. Lots of sludge oil... It seems the connecting rod cap nuts is 21/32... Bought a 21/31 12 point socket and it doesn't seem to grab like it should and wants to round off the edges of the nut I tested it on... Looks like I'm gonna have to order a 21/32 6 point socket...Should have known better...
The 1 3/8 socket I bought to remove the crankshaft pully nut doesn't fit either... too tight to go on.. I think its rust build up on the nut... Any advice is appreciated. Thanks Last edited by mjr67; 06-01-2016 at 05:00 PM. |
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06-01-2016, 05:38 PM
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#2 |
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Senior Member
Join Date: May 2010
Location: Pinckney, Mich.
Posts: 174
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Re: Socket size for connecting rod cap bolts on A Engine
I have seen rod nuts in 5/8 21/32 and 11/16, so check them all.
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06-01-2016, 05:43 PM
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#3 |
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Senior Member
Join Date: Nov 2010
Location: Anchorage, Alaska
Posts: 9,115
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Re: Socket size for connecting rod cap bolts on A Engine
The "rebuilt" engine that was in my PU when I bought it had a mix of sizes. As Mr. Thibodeau says: check them all.
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Alaskan A's Antique Auto Mushers of Alaska Model A Ford Club of America Model A Restorers Club Antique Automobile Club of America Mullins Owner's Club |
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06-01-2016, 05:58 PM
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#4 |
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Senior Member
Join Date: May 2010
Location: ca.
Posts: 2,522
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Re: Socket size for connecting rod cap bolts on A Engine
if you mean the square nuts , use an 8 sided 9/16
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V4f |
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06-01-2016, 06:12 PM
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#5 |
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Junior Member
Join Date: Aug 2010
Posts: 29
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Re: Socket size for connecting rod cap bolts on A Engine
The 17MM is a perfect fit. Been using one for years.
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06-01-2016, 07:43 PM
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#6 |
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Senior Member
Join Date: May 2010
Location: albany
Posts: 465
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Re: Socket size for connecting rod cap bolts on A Engine
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06-01-2016, 07:55 PM
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#7 | |
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BANNED
Join Date: May 2010
Location: Michigan / Ontario border, Sarnia, Ontario. 50 miles from Detroit and 150 from Toronto.
Posts: 5,800
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Re: Socket size for connecting rod cap bolts on A Engine
Quote:
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06-01-2016, 08:49 PM
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#8 |
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Senior Member
Join Date: May 2010
Location: NC
Posts: 2,975
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Re: Socket size for connecting rod cap bolts on A Engine
Original nuts took a 21/32 socket.
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06-02-2016, 09:55 AM
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#9 |
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Senior Member
Join Date: Nov 2010
Location: Anchorage, Alaska
Posts: 9,115
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Re: Socket size for connecting rod cap bolts on A Engine
17mm = 0.6692913 inches
21/32 = 0.65625 inches 17 mm is oversize
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Alaskan A's Antique Auto Mushers of Alaska Model A Ford Club of America Model A Restorers Club Antique Automobile Club of America Mullins Owner's Club |
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06-02-2016, 12:34 PM
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#10 |
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Senior Member
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,848
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Re: Socket size for connecting rod cap bolts on A Engine
Ooooo, by .013". Make sure you use a 6 sided socket...
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