Water pump

Okay finally got around to working on the boat and need a water pump. I posted before looking for one on here, but then got side tracked by other projects. Anyway here is the info.

1975 correct mustang 17
OMC 225 engine model #990311R
serial #W270182

I need to know where I can purchase a water pump for this boat. It is the last part I need to complete this boat.

I talked with a rep from an on-line store and they couldn't find this model number in their system, but said they had a water pump for a model #990211R the pump is made by Sierra and has a sku-number of SIE-18-3583 below is a link to the part. Would it work for my engine???

http://www.wholesalemarine.com/pc/SIE-18-3583///Water+Circulating+Pump+(Gm+V6+And+V8).html

BTW, your memory must be as bad as mine! We've already been through the problem in this thread from June Did you ever talk to Billy back then?

Its a chevy. I've got (basically) the same engine.
Next question. Do you need the circulating pump as asked about above, or do you need the raw water pump as asked about in the older thread. I am guessing you need the raw water pump, as they are typically what goes, but I can't make that determination from here.
If it is the RWP, as indicated in the old thread, as indicated there, and here, you would be hard pressed to find a used/original pump. They come up ocassionally, but are pretty scarce and as stated on the other thread (I believe) I sent mine to DEPCO and they said they couldnt rebuild it.
Quickest, easiest, cheapest route to go is the Johnson crank driven pump on the CorrectParts website listed above. Bolts right up to your balancer. I'll try to take a picture tonight.

Pete, it does have a circ pump, too.

75 Tique wrote: Pete, it does have a circ pump, too.

Larry,
I'm not sure!! The real early ones didn't but then I seem to remember they went the less expensive route and just got the blocks with the circ pump. This way, no special block off plate/casting was needed to plug up the hole.

John,
From your decription saying that it mounts with 3 bolts to the front of the engine is telling me it is the RWP.

With a older boat and engine like yours, please come here first. The normal "marine" parts sources you find on line are not the place to go.

Give Billy a call (or Karen) and they'll give you a idea of the costs to retrofit to a crank driven RWP.

Thanks again guys for all the help. Yeah the part I am missing looks to be the RWP. I took a picture, but don't have the camera with me at work to upload it. Looking at the above pictures it has to be the rwp. I will give Karen/Bill a call about it when I get a chance. Any chance of a pre-made bracket being available or do I have to fab one? Also can I use the hoses that are there or will I need to find different ones?

thanks again,
John

Trust me I have no problem fabing stuff, but if there are pre-made ones all the better.

Also being new to the boat thing. Is there anything special i have to do to the boat if i want to take it out in salt water. I go Cape Cod alot during the summer and would like to take it out while there as well. It would mainly be out in Lewis bay so not open water and I would not be keeping in the water, but it would be on a trailer. It will mainly be in fresh water, but would like to use it while out on the cape as well.

John,
I got your private message email via the site with the ebay link to the Sherwood RWP. I can't respond via private message since your email address in your profile in marked private so here's some more on the subject.

Reviewing the problem, you have a OMC that was equipped with a OEM RWP that's not made anymore or available. Even Depco Pump (biggest pump distributor/repair outfit in the country) can't help with a OMC RWP. The Sherwood you found is not the same pump and not a bolt in replacement. Whether you go with a belt driven pump like the Sherwood or a crank driven pump like Billy/Karen offer, brackets will need to be fabricated. I suggest going with the crank driven retrofit that's already been done and works. If you still want to go with a belt drive retrofit, I caution you on sheave sizing that will determine the RWP's RPM and the gallons of water it will pump. Engineering charts are available online at both the Sherwood and Jabsco sites. With the crank driven, the pump is sized correctly for the engine RPM's - no belt drive ratio's to deal with.

BTW, some affectionately call that OMC RWP "the pump they copied from a washing machine"!!