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10-08-2013, 01:24 PM | #1 |
Junior Member
Join Date: May 2013
Location: Kaneohe, Hawaii
Posts: 1
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Mercury EAC engine
Hi Guys (this is my first post here on the Barn)
I have an opportunity to buy a 255 Mercury EAC. It comes with the truck 3 speed column shift gear box. It spins freely, looks solid, Good Oil, ran fine when they took it out...(this is how it came out of the truck.) Distributor on the side..Rear Oil Pump..Low Compression? Any other pitfalls compared to installing it like a 59A in a 32 or Model A frame? Is it a desirable engine?...$?..(you can omit these two questions if you like) Any info appreciated! Thanks Guys Tommy
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10-08-2013, 01:41 PM | #2 |
Senior Member
Join Date: May 2010
Location: Waddell, AZ
Posts: 2,540
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Re: Mercury EAC engine
welcome to the 'Barn.....should have the 4" crank....what is low compression??....all cylinders??...run a hot wire to the distributor and start it??....Mike
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10-08-2013, 02:09 PM | #3 |
Senior Member
Join Date: Nov 2011
Location: Tallahassee, FL
Posts: 175
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Re: Mercury EAC engine
The cranks in those go or $250-$300 depending on condition. (assuming it has the 4 incher in it) Unless you can hear it run I wouldn't pay much more than that for it. Until you can have the block checked I would look at it as a parts engine.
--louis |
10-08-2013, 06:09 PM | #4 |
Senior Member
Join Date: Dec 2010
Location: San Antonio Texas
Posts: 636
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Re: Mercury EAC engine
A find like that in Hawaii,amazing.
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10-08-2013, 06:14 PM | #5 |
Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,453
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Re: Mercury EAC engine
It may be a Ford 239 with Mercury heads too. I'd get a guarantee that it has a 4" Mercury crank before purchase.
The 8BA family of engines can be used in pretty much any Ford that was designed for a V8 and can be modified to work in some of the real early 4-banger cars with a bit of ingenuity. A very tight fit in a model A but it has been done. The 59A or earlier is a bit easier to get into a model A but a 32 has the extra space and isn't as much of a problem. |
10-08-2013, 06:16 PM | #6 |
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Join Date: May 2010
Location: Mill Valley,Ca.
Posts: 1,509
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Re: Mercury EAC engine
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The blocks crack fairly often, so I would not want to pay a lot for that without a guarantee... Even then, watch out. Before you invest a lot, magnaflux the combustion areas and pressure test the block. If you can hook up a radiator and bench run it for 30 minutes or so and KNOW it was good, it would be a lot better than "it ran when I parked it". Karl Last edited by Karl Wolf; 10-08-2013 at 06:21 PM. |
10-08-2013, 08:50 PM | #7 |
Senior Member
Join Date: Oct 2011
Location: Gloucester VA
Posts: 1,042
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Re: Mercury EAC engine
Karl has good advice. You MUST verify the crank stroke by pulling the oil pan or a head. If the owner won’t agree then walk away. The photos show an early 8RT (truck) Ford oil pan. A Merc oil pan would fit in a truck so it seems someone went to the trouble of changing the oil pan and pickup tube from Merc to Ford....or did they? Call me dubious but I have a feeling this is a Ford motor with Merc heads.
Lonnie |
10-08-2013, 08:56 PM | #8 |
Senior Member
Join Date: May 2010
Location: Star, MS
Posts: 4,024
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Re: Mercury EAC engine
The Mercury green color looks original and adds credibility to the Mercury story.
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10-08-2013, 09:08 PM | #9 |
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Join Date: May 2010
Location: SLC Utah
Posts: 798
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Re: Mercury EAC engine
Looking at the pictures, and from you've said, I'd bet that someone put a Merc passenger car motor in the truck and used the old truck oil pan and water pumps.
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10-08-2013, 09:37 PM | #10 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,873
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Re: Mercury EAC engine
If it is what he says it is, it's a great find. You can use everything in the engine for an inexpensive street engine. Only down fall maybe n hardened exhaust seats. However It has wide belt water pumps and that was used in -9 Mercs,
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10-08-2013, 10:12 PM | #11 |
Senior Member
Join Date: May 2010
Location: Oakdale,Ca
Posts: 1,323
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Re: Mercury EAC engine
He could just pull a plug and use a dowel to measure the stroke.
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10-09-2013, 01:05 AM | #12 |
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Join Date: May 2010
Location: Sydney, Australia
Posts: 949
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Re: Mercury EAC engine
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10-09-2013, 06:40 AM | #13 |
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Join Date: May 2010
Location: Northeast Pennsylvania
Posts: 1,582
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Re: Mercury EAC engine
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10-09-2013, 09:19 AM | #14 |
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Join Date: May 2010
Location: Oakdale,Ca
Posts: 1,323
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Re: Mercury EAC engine
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