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#655506 06/17/2010 6:21 PM
Joined: Oct 2006
Posts: 20
5
Apprentice
Apprentice
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I have recently got my 51 flat bed 1.5 ton back on the road. I put a 261 engine in it. It has the short water pump with 16" blade. Its over heating, the regular pump makes the fan blade hit the lower drum on the 4 pass radiator. I can't move the radiator forward without cutting metal. Can anyone give me another option. I am thinking about an electric fan in front of the radiator

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T
Shop Shark
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Pitch the short pump buy the adapter for the early style pump. This will put the pump back to the corect place on the rad thus letting the fan pull air though the rad like it should. I've used both set ups and the adapter works the best. I'm currently running the adapter set up on a boom truck that gets the crap worked out of it with no heating problems at all.

ttodd #655621 06/18/2010 2:39 AM
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V
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I also put the water pump adapter plate on my firetruck's 261 motor and it has zero overheating issues. It sounds like a pain but put on the adapter and your over heating issues are gone. Then you can move on to the next problem... LOL


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Apprentice
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Where can I purchase this adapter plate

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T
Shop Shark
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They sell on ebay for about $40 plus shipping.

ttodd #655793 06/18/2010 8:17 PM
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C
Wrench Fetcher
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Sounds like you've got the answer already, but just in case you go with the electric fan, be sure your charging can handle the extra load.

Cory W. #655845 06/19/2010 2:05 AM
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One of our own stovebolt members sells them. His name is Dave and that is where I got mine. Search adapter plate on the Stovebolt and he'll surface.


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Apprentice
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OK, so the problems continue. I just received the adapter plate, it states that the harmonic balancer and water pump should be off the original 216, which has already left my possession. Can I use the 261 balancer or do I need to start looking for a 216 balancer, of which I had two of, not more than 4 months ago. The original water pump I can purchase, though I have two new ones, patricks and a short pump which now I can't use. Any suggestions.

Joined: Sep 2001
Posts: 29,269
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
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Yes, you can use the 261 harmonic balancer as long as its groove width matches the grooves on the alternator/generator pulley and the water pump pulley.

Jim Carter has the older style pump with either 3/8" or 5/8" pulley.

Get an older-style and a newer-style water pump gasket (no matter what the instructions say about the need for gaskets).


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