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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
The Mitsubishi 4G32 and you. A comprehensive guide to surviving poor financial decisions and overhauling a terrible engine.
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<blockquote data-quote="Dave1234" data-source="post: 134027" data-attributes="member: 23099"><p>After a lot of picture research for various Dodge colt water pumps, I bought a water pump for a 1978 dodge Colt--an Aisin WPM 006. It was an <strong>exact</strong> replacement for the one I took off my 742B with the 4G32 engine, and which appeared to be the OEM water pump. For research, I also ordered a 2nd one, also for a 1978 Dodge Colt made by GMB Lazorlite L 31-1049 ($18, the cheapest I could find). The casting appeared to be identical to my original, the impeller was different, but I assume it would work. I got both from Ebay. Rock Auto might have been slightly cheaper for Aisin, but their shipping is pretty high. I recommend the Aisin. There seem to be many available from $40-$70, but <strong>I suspect everyone is clearing out their old stock so they may not last long</strong>. I also later noted that the overflow tank for the radiator is below the radiator, meaning that if the water pump shaft seal begins to fail, the radiator will preferentially suck in air past the shaft seal rather than the heavier antifreeze mix in the overflow tank, and on the next warm-up cycle spit out a similar amount of water from the engine through the water pump shaft seal. Since no one is going to unbolt the outside cover frequently to expose the radiator cap to check the level, making sure the water pump is in good shape (i.e. not horribly old with failing seals) is really important. Your beautiful like-new engine deserves a new pump.</p></blockquote><p></p>
[QUOTE="Dave1234, post: 134027, member: 23099"] After a lot of picture research for various Dodge colt water pumps, I bought a water pump for a 1978 dodge Colt--an Aisin WPM 006. It was an [B]exact[/B] replacement for the one I took off my 742B with the 4G32 engine, and which appeared to be the OEM water pump. For research, I also ordered a 2nd one, also for a 1978 Dodge Colt made by GMB Lazorlite L 31-1049 ($18, the cheapest I could find). The casting appeared to be identical to my original, the impeller was different, but I assume it would work. I got both from Ebay. Rock Auto might have been slightly cheaper for Aisin, but their shipping is pretty high. I recommend the Aisin. There seem to be many available from $40-$70, but [B]I suspect everyone is clearing out their old stock so they may not last long[/B]. I also later noted that the overflow tank for the radiator is below the radiator, meaning that if the water pump shaft seal begins to fail, the radiator will preferentially suck in air past the shaft seal rather than the heavier antifreeze mix in the overflow tank, and on the next warm-up cycle spit out a similar amount of water from the engine through the water pump shaft seal. Since no one is going to unbolt the outside cover frequently to expose the radiator cap to check the level, making sure the water pump is in good shape (i.e. not horribly old with failing seals) is really important. Your beautiful like-new engine deserves a new pump. [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
The Mitsubishi 4G32 and you. A comprehensive guide to surviving poor financial decisions and overhauling a terrible engine.
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