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Tractor Pulling Discussion Forum

3/4 big enough for elec. water pump outlets ?

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AC

12-26-2004 12:18:49




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I was looking at an electric water pump, actually a centrifical (sp) hose pump that is 3/4 in and 3/4 out. I see alot of guys run school bus heater circulater pumps. What are the in and outlet sizes of those? For that matter, what is a centrifical pump, versus a diaphram pump? Thanks, AC




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Mike Aylward

12-26-2004 14:36:48




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 Re: 3/4 big enough for elec. water pump outlets ? in reply to AC, 12-26-2004 12:18:49  
AC, I am hoping that the 3/4" fitting is big enough. I recently bought a Hypro Aqua-Tiger pump and it has that size fittings on it. The book says it will pump over 20 gallons per minute so that should keep things circulated. I am building a 70 John Deere and it looks like it should work fine. It is a centrifugal pump and I was able to get it through my fertilizer dealer at his cost and was far cheaper than a remote mount racing pump. Seems to be the best thing I have seen so far. I was hoping to stay with a centrifugal because I was not sure that a diaphragm or flexible impeller pump would handle the heat or continuous use that would possibly be needed. This pump has a stainless steel housing and impeller and also has a mechanical ceramic seal like a conventional engine water pump has. I had considered using a marine pump but it appeared to be too light duty for this application. Hope this helps. Mike

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JDGnut

12-28-2004 07:57:07




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 Re: 3/4 big enough for elec. water pump outlets ? in reply to Mike Aylward, 12-26-2004 14:36:48  
Mike.. we use the same pump... (Only I have the bronze housing and impeller..) And Depending on the size of your radiator... sometimes it circulates too fast.. you might have to cycle the pump off and on to keep the engine at the temp you want.. JDGnut



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jd b puller

12-28-2004 18:23:18




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 Re: 3/4 big enough for elec. water pump outlets ? in reply to JDGnut, 12-28-2004 07:57:07  
Would you mind sharing exactly what water pump you are using? I have tried a couple times on ebay to get one, but keep getting outbid at the last second. Thanks, Ray



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Mike Aylward

12-28-2004 08:24:16




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 Re: 3/4 big enough for elec. water pump outlets ? in reply to JDGnut, 12-28-2004 07:57:07  
JDGnut, I supposed as much. I am thinking of putting in a temperature switch that will run the pump when necessary, serving a similar function as a regular thermostat. I would probably connect an electric fan to this same control. Mike



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AC

12-27-2004 05:50:52




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 Re: 3/4 big enough for elec. water pump outlets ? in reply to Mike Aylward, 12-26-2004 14:36:48  
Thanks, Mike. This is just a little water pump I found at the local TSC, but it is 69.99, so it had better work! I'll update when I go back and get it. Now, is there a 3/4 HOSE THREAD to pipe thread adapter? I thought they were the same....AC



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buickanddeere

12-28-2004 11:07:37




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 Re: 3/4 big enough for elec. water pump outlets ? in reply to AC, 12-27-2004 05:50:52  
Home Despot (no spelling error) has bins full of adaptor fittings. Mike i've been thinking something similar as well. Getting rid of the heavy factory rad and repalceing it with an automotive unit to lighten weight. And saving the HP to turn that fan and water pump is better than making extra HP in the engine. Still hav't got into my 70LP yet. Always something comes along to use up the hobby money. Recovered from gotg?

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AC

12-28-2004 13:20:26




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 Re: 3/4 big enough for elec. water pump outlets ? in reply to buickanddeere, 12-28-2004 11:07:37  
I can get a 5 lb aluminum radiator. The ones all the ih guys use is out of an early dodge caravan. I am puting one on mine. They list for something like 179.99, but I get them for $75. They will save alot of space and weight, but you will have to do some fab work, esp with those BIG JD water pipes! I think it would be too small....Thanks for the tip!...AC



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