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Theory, and a Boner, on my Super-A

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P and R Pete

04-09-2008 13:55:34

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Boner first.
Buttoned-up the rear main seal, went to put on my flywheel on my new-old crank, to discover I hadn't noticed that the machinist hadn't moved the dowel from the original crank to this one.
Doh!
Is this absolutely necessary to have one, so long as I make sure to line up the dowel-holes? I neither want to remove nor hammer on the crank.

Theory-
New sleeves and pistons took me from a 113 to a 123. It ran HOT previously, often to the point of boiling, and I don't want this to get any worse. ("Thermo-siphon", my *ss. It's efficiency has been underwhelming). ANy reason why I shouldn't put on a water pump? And am I right that this would require a different head gasket? Is there a pump that is just a bolt-in affair, that would line-up with the extra fan pulley?

Thanks

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HossinMe

04-10-2008 15:13:21

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Re: Theory, and a Boner, on my Super-A in reply to P and R Pete, 04-09-2008 13:55:34

Pete,Dont worry a lick about the dowel pin.Line it up like it is supposed to be and let er rip.Ive done these before on other engines and they are ok.Be sure to line it up as if the pin were there.Its to make sure flywheel is in right place for balance. Later Hoss

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Steven f/AZ

04-10-2008 09:24:02

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Re: Theory, and a Boner, on my Super-A in reply to P and R Pete, 04-09-2008 13:55:34

Never had a problem with the thermo-siphon my A, and I've pulled it awful hard on some 100 degree days cultivating trees... It works on a basic physics principle - hot water will rise and cold water will sink.

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Farmboy856

04-10-2008 04:46:15

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Re: Theory, and a Boner, on my Super-A in reply to P and R Pete, 04-09-2008 13:55:34

I used a Super A and a straight A mowing township cemetaries and a small park from the late 1970s to the early 90s. Both had Woods 6 ft. mower decks on them, and they both saw approximately 10 hours of service per week. The straight A is a thermo-siphon system, and the Super has a water pump. The straight A never overheated once in all that time, but I always blew out the radiator fins on both tractors weekly with air. The thermo-siphon system works!

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fredmich

04-09-2008 19:07:00

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Re: Theory, and a Boner, on my Super-A in reply to P and R Pete, 04-09-2008 13:55:34

I put a water pump from a Super C on my BN that has a 6 ft. woods mower on it years ago and now I don't hear it gurgling and bubbling after I shut it off after a hot day mowing. I know they were designed to run hot but I think the pump is better. It's not a big deal to install and she's a mowing machine!

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riverbend

04-09-2008 18:37:45

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Re: Theory, and a Boner, on my Super-A in reply to P and R Pete, 04-09-2008 13:55:34

Hey Pete,

My Sc runs 160F with a thermostat and water pump.

Greg

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CNKS

04-09-2008 17:38:01

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Re: Theory, and a Boner, on my Super-A in reply to P and R Pete, 04-09-2008 13:55:34

Water pump is a band aid for a clogged cooling system.

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P and R Pete

04-09-2008 18:34:43

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Re: Theory, and a Boner, on my Super-A in reply to CNKS, 04-09-2008 17:38:01

I hear you, sir. I just had my block cleaned in the rebuild process, so we'll see, but there was precious little cr*p in the water jacket. If I had a problem anywhere, it would have had to be my radiator. I took it to a local radiator-dude, who pressure-tested it for leaks, and though he had no method to quantify the flow, it was his professional opinion that water was moving through it adequately.
I guess I just can't grasp 'thermo-siphon' intuitively, that water will establish any serious FLOW in such a system. Guess maybe I just grew up with waterpumps on everything. But besides, didn't IH put waterpumps on all their 123's? I just assumed it was a natural technological progression.

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ScottyHOMEy

04-09-2008 15:00:42

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Re: Theory, and a Boner, on my Super-A in reply to P and R Pete, 04-09-2008 13:55:34

If she's runnin' that hot, you might want to take a look at your timing.

Thermosiphon is a good system. One of the reasons it works has to do with the sound a Farmall makes back at the house while it's runnin' hard at the back of the farm. You may or may not be able to hear the exhaust, but you can sure hear the fan. If the system is clean, you don't want to touch the top of the radiator in a warm-up thermosiphon system, but the bottom will be drned near cool. It does work.

Head gasket wouldn't be the issue if you add a water pump. You'd need a new drive belt to turn the genny and the pump, a new bracket to adjust the tension on the genny, as it bolts up differently to a pump. Not sure if the thermosiphon upper outlet (from head to radiator) has a lip that would let you put a thermostat in or not, so you might need to change that out, too. You don't want to run a pump with no thermostat, or you'll never get her to warm up.

Me, I'd check the timing.

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