Has anyone seen a raw water pump from a boat used as a coolant circulation pump on a hot rod? I was wondering if the impeller would stand up to the heat.
Good question, normally they run in cool water so not sure how the heat would affect the rubber impeller. What are you trying to accomplish? Rear mounted radiator? Globe sells a blue impeller that is advertised as a "run dry" impeller, in case you run aground etc. Those are a little more forgiving. Don
If you are talking about the bilge pump, no, the electric pump won't tolerate very much heat. In fact, if you run them for long periods of time, even immersed in cold water, they can over heat. If you are speaking of the impeller in the outboard motors, no, they are made of plastic, and engine heat will distort them in a hurry. If you are speaking of the water pump on an inboard engine, mine actually uses a car water pump, so yes, they will hold up.
No, hes talking about the raw water pump that sucks water out of the sea and brings it to the engine so the circulating pump can do it's thing. They are belt driven by the crank. Here is the website for the Globe impellers: http://www.globecomposite.com/pages/products_marine Don
I was originally looking at an electric pump, but they have there issues with anything driven for a long time. Basically i have a blown engine with a dry sump coming off the cam cover so there is no room for the original water pump. The raw water pump is the only one i could find that mounted to the side of the block, unless someone knows of a water pump that can be mounted in a similar fashion. Plus the all brass mercruiser pump looks really cool. Edit: the run drys might like the heat better. Thanks for the idea.
The impeller will be fine, there's not enough heat to destroy the rubber plus the antifreeze will lubricate it.
Has anyone successfully tried this? I’m building a small block powered 34 Willys and want as much legroom as I can. I figured if I mounted this style pump nothing would stick out further than the crank pulley. This would gain atleast a couple inches from the deep bell on the short pump pulley. It like the simplicity of this style that bolts to the fuel pump boss. There are several other sea water pumps. Most of these have a rubber impeller. Just wondering if they would hold up to 180-200 degree water/antifreeze.
Do they say what kind of rubber? Glycols are generally friendly to most kinds of rubber, especially in ≤50% concentrations, but it'd be best to make sure. I do recall some glycol-rubber compatibilities being temperature-limited to fairly low temperatures, though. It sounds like a useful idea!
there was a post on engine swaps into foreign cars website using raw water pump and they said eventually rubber impeller gets soft. You will need a Dedenbear water manifold. The pump you showed bolts to BBC. I did not see one for SBC so you will have to make mounts. https://www.jalopyjournal.com/forum...on-production-v8.1204090/page-4#post-13819500 If you will run a ribbed belt you might as well keep the stock pump as the belt will go on either side of the wp pulley.
I'd be interested as well in a compact, remote mounted mechanical water pump for clearance purposes. LA mopar can shave alot of length if I went remote. I've seen the 1947 Plymouth pump on Rock Auto for $44 bucks, but not sure about it's flow. Fabbing a plate for the rear port wouldn't be horrible. Any other ideas? -rick
Those sea water pumps are only meant to draw in the raw water from the sea, into the cooling system, usually on a closed cooling system ( heat exchanger or water cooled radiator basically). The engine always retains a circulation pump. It may or may not have enough flow. There are some pumps in sailboats and such that have bronze impellers, but what make and models and how to find I’m not sure because I’m a powerboat kinda guy Fwiw the most common sea water pumps are the ones Volvo Penta uses
the elusive 224/3.7 Mercruiser banger thread shows remote mounting a Toyota pump somewhere in its 100+ pages. Globe makes a replacement Johnson impeller that can run dry for 15 minutes. Just as example but not for the model mentioned. https://www.amazon.com/Globe-Marine-Run-Dry®-18948-0001-09-702B-1/dp/B00CEN57CC
Here's a mounted solid brass reverse rotation marine water pump on a 409 Corvair project. 409 powered 1960 Corvair[/URL
Old thread, If you want to get Tricky , Think outs side box , use OEM style pump off a what ever , Import / Dem , Cut it up , Tap , weld etc , Direct dive ,V- pulley, add spud, 5mm cog, etc,
I really like the use of the 6 cyl balancer/pulley on a small block. This would really shorten up the front end of the engine. The Deadenbear is slick too. Although ports could easily be me to bolt to the front or bought it you wanted a fitting. I have found an upgraded material for the sea pumps. Not sure they would hold up either.
This crossed my mind as well. I’ve got a ls1 pump laying around and thought about having a housing machined for it. Awhile back I saw someone had taken a Detroit 471 pump and converted it to remove mount.
Idk if they’ll move enough water for a v8 but I’ve considered this Mazda mvp water pump for a divorced belt drive
Mike Krule ? (spelling ) River Rat Made single stage water pumps smaller then Enderle 00 & 80 fuel pumps, You where able to run off a cam , fuel pump drive or add pulley for belt , Even stack as many as wanted , I have afew around here in some where , Mike been out off Business for some time know , I believe I have seen someone else making the water pump He made ,, Maybe some one from & for dirt track sprints
The 350 in my Bayliner 2455 has a sealed cooling system with a raw water pump running water through the heat exchanger and exhaust manifolds. The raw water pump is only intended to run cool water through the heat exchanger and not intended to be used to recirculate hot water. A better Idea for a remote pump is pick a pump that is small physically but is capable of cooling what ever you use it on. Take something like the pump for a 250 Chevy six that is used on the Zips riser and a block of aluminum and make a housing to bolt it to the pump to make a simple remote pump that works A pump for Mopar wedges might work well too as you could have both inlet and outlets in the machined block with pipe nipples screwed in to hook hoses to.
I'd try it. Not like it's hard to keep spare impellers and swaps are made to be easy. The impellers really hate heat. I think it's a question of whether that hurts them more than the antifreeze helps them. I like that it has a mount for a tensioner.
I forgot about this pump, I had actually brought one home to see how I could make it work on my 62 cutlass( ended up rearranging the engine bay and have room for standard block mounted pump now). This one is a modern dodge dart pump, it was easy to make a v belt pulley bolt on.
^^^^^ Has me thinking Chevy 6 cly pump like those used on a Zip pump riser. In other words, build your own pump housing.
what year/engine is that off of? looks like a better candidate than the 47 plymouth pump i was considering... -rick
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