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Allis Chalmers Discussion Forum
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Wd45

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Jr1983

12-05-2018 02:59:13




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I am having cooling problems in my 45. I'm thinking the block is full of scale. Thermostat isn't in it and it get s up to temp with no load in three minutes. Radiator is new temp gauge is new water pump is new. I also know the previous owner had an affinity for stop leak and other additives. Two questions. One is my logic right and number two what can I do about it?




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Aaron SEIA

12-08-2018 03:30:45




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
Thats not the block and really has no good access to the block. Only way to clean the block is remove the sleeves.

AaronSEIA



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DrAllis

12-07-2018 13:15:00




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
There aren't any freeze plugs in a WC-WD-WD45- D17gasoline engine block.



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S.C.

12-07-2018 22:02:51




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 Re: Wd45 in reply to DrAllis, 12-07-2018 13:15:00  
There is in the top of the head under the valve cover.



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BushogPapa

12-07-2018 08:22:56




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
Remove a couple "Freeze Plugs" and power wash the crud out of the block..may need to dig a little to get it all, but works well on just about any of them..



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BushogPapa

12-12-2018 16:43:33




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 Re: Wd45 in reply to BushogPapa, 12-07-2018 08:22:56  

If no Core Plugs, remove the upper coolant outlet and the rear plate that covers the opening for the rear outlet on top of the head, under the Headbolts (used on earlier models) and remove the Block Drain..ALL places you can access the sediment with a power-washer wand..and stiff wire to help check the progress..



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16-30 oilpull

12-06-2018 19:06:35




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
I agree with putting the thermostat back in. It is not an old mechanics tale as I experienced it with my model T that has a water pump. A friend who is quite an expert with them told me to put the thermo in to stop parade over heating. It worked.



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Aaron SEIA

12-06-2018 14:09:08




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
Have you confirmed the coolant temp is actually skyrocketing and it's not a faulty gauge.

AaronSEIA



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S.C.

12-06-2018 05:59:46




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
When I pulled the sleeves out of mine the two rear sleeves had rust and scale packed around them all the way to the top. Wasn’t showing any signs of overheating. I don’t know how you could get all that out without pulling the sleeves if that is your problem. I wouldn’t put much faith in the new Chinese made gages either. If the thermostat is out it may never get up to normal temperature. Get a good quality non contact thermometer so you know for sure what the temp actually is at the radiator and on the block and head.

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DrAllis

12-05-2018 09:33:56




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
I overhauled one that the block was HALF FULL of radiator stop leak sealer from years and years of adding that instead of fixing the radiators leaks. Even at that, I wasn't overhauling it for overheating, but using lots of oil and fouling spark plugs. New temp gauge doesn't mean squat to me. it could very well be defective. 3 minutes to HOT ?? Even with the fan belt left off I don't think that would happen (3 minutes)unless you were pulling it hard.

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old

12-05-2018 08:07:28




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
I'd do a vinegar flush. Drain it then fill with vinegar till good and warm and then let it cool drain and filter the vinegar. Then maybe flush it a 2nd time with vinegar. Then back flush it by way of the block drain and a garden hose



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Traditional Farmer

12-05-2018 04:18:55




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
A normal WD45 will almost never have heating problems even pulling it hard with a half covered up radiator so you have some serious problem.It could be scale but I find it hard to think
it'd over heat in 3 minutes with that.Sounds more like something like a head gasket.



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Aaron SEIA

12-05-2018 04:03:09




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 Re: Wd45 in reply to Jr1983, 12-05-2018 02:59:13  
Put the thermostat back in. Its my understanding that without it, the water runs through the radiator so fast, it doesn't get cool.

AaronSEIA



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Jr1983

12-05-2018 06:05:25




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 Re: Wd45 in reply to Aaron SEIA, 12-05-2018 04:03:09  
It can but it takes a while. This thing gets hot fast.



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Traditional Farmer

12-05-2018 04:16:02




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 Re: Wd45 in reply to Aaron SEIA, 12-05-2018 04:03:09  
That has been proven to not be true.



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d beatty

12-05-2018 07:32:50




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 Re: Wd45 in reply to Traditional Farmer, 12-05-2018 04:16:02  
Your wrong! Without a thermostat the water does not stay in radiator long enough to cool down.



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Traditional Farmer

12-05-2018 09:42:34




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 Re: Wd45 in reply to d beatty, 12-05-2018 07:32:50  
That's an 'old mechanics tale'



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VicS

12-05-2018 18:24:20




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 Re: Wd45 in reply to Traditional Farmer, 12-05-2018 09:42:34  
Maybe, but you can keep a 400 cu. Wd45 cool with a 3/8 hole in the back of the head with the block full of concrete just circulating 5 gal a minute with a electric pump.



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