Flathead fluid direction?
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Flathead fluid direction?
Can anyone tell me which way the water flows in my radiator? In at the bottom, out at the top ??? Also, I don't know which way the oil flows through my canister-type oil filter... (1950 F-5 239 flathead)
Thanks,
Brad
Thanks,
Brad
Junior User
Joined: Nov 2004
Posts: 59
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From: Stoney Point, Ontario
Coolant flows from bottom of rad to water pumps, through engine and back through the top rad hoses.
If it's the stock type oil filter mounted off the left cyl. head, then the oil flows from the back of the block into the side of the canister, through the filter element and drains to the crankcase from the bottom of the canister.
While you didn't ask, and therefore probably already know, the oil line fitting in the block must be restricted to about .040".
Hope this helps.
Dave
If it's the stock type oil filter mounted off the left cyl. head, then the oil flows from the back of the block into the side of the canister, through the filter element and drains to the crankcase from the bottom of the canister.
While you didn't ask, and therefore probably already know, the oil line fitting in the block must be restricted to about .040".
Hope this helps.
Dave
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Dave,
Thanks so much for the reply. I did not know that about the fitting in the block. I guess it's original.
(unrelated to oil flow): I'm having trouble keeping the engine cool. I took out the thermostats completely, flushed the radiator (with water only) which seemed to run through just fine, and now have ordered new water pumps. When I took off the old ones, the impellors looked like new. I was hoping to find my problem there. I don't know if the new ones will help...I'll know in a few days.
Thanks again for the reply.
Brad
Thanks so much for the reply. I did not know that about the fitting in the block. I guess it's original.
(unrelated to oil flow): I'm having trouble keeping the engine cool. I took out the thermostats completely, flushed the radiator (with water only) which seemed to run through just fine, and now have ordered new water pumps. When I took off the old ones, the impellors looked like new. I was hoping to find my problem there. I don't know if the new ones will help...I'll know in a few days.
Thanks again for the reply.
Brad
Lead Driver
Joined: Oct 1999
Posts: 6,769
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From: Kalispell, MT
Brad, I run a 48 F1 every day. It can idle forever and never heats up (contrary to popular thought it does hit mid to high 90's in Montana). I run 180 thermostats and regular 50% antifreeze with regular off the shelf waterpumps.
Only thing I've done different than you did was to have the radiator re-cored by a local rad shop. Cost me the better part of $300, but I have a like new rad and I know the tubes are clean and not coated with decades of sludge that keep the coolant from transmitting heat to the air. You can't get that stuff out with a flush.
Drill a couple of 1/8" holes in the rim of the Tstats before you install them. Keeps the temp from spiking when they first open up and allows the air to escape from the top of the heads when you first fill the system.
Only thing I've done different than you did was to have the radiator re-cored by a local rad shop. Cost me the better part of $300, but I have a like new rad and I know the tubes are clean and not coated with decades of sludge that keep the coolant from transmitting heat to the air. You can't get that stuff out with a flush.
Drill a couple of 1/8" holes in the rim of the Tstats before you install them. Keeps the temp from spiking when they first open up and allows the air to escape from the top of the heads when you first fill the system.
Fleet Owner
Joined: Jul 2004
Posts: 27,287
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From: NM
Actually the fitting that restricts oil flow is at the inlet to the canister, not at the block (as far as I know, anyway).
I agree with MT, a flush with plain water won't do a thing. At the least you need a good cleaner in it, a long soak, and need to include the engine in the cleaning. Flatties are sloped backwards (to the rear) and you would not believe the mud that collects at the bottom rear of the block. The absolute best way to clean is to take off the heads and fish around in that area with coathangers, rods, etc. and break the crap up, with a strong flush to get it out. You can pull the water pumps out and support the engine with a jack under the oil pan, so it slopes to the front, and flush a lot of it out.
I agree with MT, a flush with plain water won't do a thing. At the least you need a good cleaner in it, a long soak, and need to include the engine in the cleaning. Flatties are sloped backwards (to the rear) and you would not believe the mud that collects at the bottom rear of the block. The absolute best way to clean is to take off the heads and fish around in that area with coathangers, rods, etc. and break the crap up, with a strong flush to get it out. You can pull the water pumps out and support the engine with a jack under the oil pan, so it slopes to the front, and flush a lot of it out.
Last edited by ALBUQ F-1; Sep 8, 2005 at 11:23 PM.
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