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EFV-8 Club Forum / General Ford Discussion / Wide fan size?

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spqr67

12-22-2012 @ 1:46 PM

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I'm in the process of swapping a flathead with a flathead (long story). The new motor uses the wide fanbelt whereas my old motor used the narrow ones. Anyone know the correct width of the "wide" belts?

Stroker

12-22-2012 @ 3:07 PM

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I believe that they are 3/4 inch. Actually, we'd love to hear the "long story".

spqr67

12-22-2012 @ 9:57 PM

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Thanks

*sigh* classic tale I suppose..."the car runs great". Probably should have driven it more than a block before plunking down my cash. Come to find out that a cylinder had a stuck valve. In trying to repair, I managed to bust 6 head bolts in fine fashion. After I started digging into the motor, I got to a tipping point. Is it cheaper to fix the old motor or start over with a fresh one? So then, might as well just keep going. Just found out that the previous owner had installed the O/D unit backwards. Awesome. Just keeps getting better.
On the bright side, my headlights work.

Michael

supereal

12-23-2012 @ 10:25 AM

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Unless it, too, has been "jerry rigged", the later small belt engine would be a better bet. There are a number of advantages, such as seals on the intake valves, stronger oil pump, etc. As for the broken head bolts, they can be removed. If the bolt broke off above the deck, we wire weld a nut on it and turn it out. If it is broke below the deck, it is best left to a pro, as it requires a guide to center a drill bit. If the bit goes off center, it will likely breach the water jacket. As a standard practice, we replace all head bolts or studs during a rebuild, as the huge number of heat/cool cycles anneals the fasteners, making them prone to breakage. I don't understand how the O/D unit could have been installed backwards, but I guess stranger things have happened. Don't be discouraged. Most of us have bought a "surprise package" one or more times. Take a deep breath and step back a bit when it starts to get to you.

TomO

12-24-2012 @ 8:00 AM

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You did not give us the year of the car or your replacement engine, so I am going to assume that the replacement engine is a 49-53. The water pumps, crank pulley and generator should all interchange between the earlier wide belt engine and the narrow belt engine.

Tom

rotorwrench

12-26-2012 @ 11:27 AM

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A person definitely has to know the year in question. the old 1945/48 59A type engine uses wide belts just like an early 1948/52 8BA truck or commercial or even a 49 Mercury but they are two distinctly different engines. Narrow belt engines just use different sheaves than the wide type on the 8BA family of engines. The sheeves being press on type can sometimes be interchanged when need be but the different 8BA family of water pumps are engine mount specific.

This message was edited by rotorwrench on 12-27-12 @ 6:48 AM

spqr67

02-24-2013 @ 12:17 PM

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Color me confused...the new motor was represented as a 49-53 8BA. All the numbers (intake, cyl covers, etc) add up but could have been easily added. The water pump, fan and crank all have wide belts. Again, possible that the motor is an 8BA but had incorrect water pumps and and crank added as part of the rebuild.
Considering just changing the pulley on the generator as the path of least resistance.
Any thoughts? Would be great to be able to positively identify the motor so I know what I'm dealing with.
Thanks all. Never easy, but not giving up!

supereal

02-24-2013 @ 3:05 PM

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It is possible the 8BA type came from a truck, which used wide belts. All belts, wide or narrow, must line up with the pulleys. The narrow belt engines use water pumps which are offset because two belts were used. If it is a truck engine, it is likely the heads are marked 8RT, but not always. The 8RT water pumps have the same mounts as the early Fords.

42merc

02-24-2013 @ 5:48 PM

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I believe the wide belt is 5/8" wide.
'49 Ford passenger cars are 8BA's with wide belts

trjford8

02-24-2013 @ 6:59 PM

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The 8BA has the detachable bell housing. The earlier motors(48 and earlier do not,the bell housing is part of the block). This is the easy way to tell if you have an 8BA.

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