does anyone make an aftermarket high volume water pump or oil pump for the 225?

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Slant 6 engines

The 8-blade water pump which seems to be all that's available new could be considered high volume. High volume oil pumps are problematic. Stock replacement oil pumps are higher volume than original anyway. Red this: http://www.slantsix.org/articles/oil-pu ... report.htm

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Joshua

I don't agree, but perhaps I am missing your logic/point. Please elaborate.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks for the info I just found a high voume oil pump from Pentastar as well.

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Slant 6 engines

@Dan: The 8-blade water pump will move more coolant at low speed.

@ Nick: Why do you want a high volume oil pump? The stock replacement pump is generally more than enough.

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Joshua

Well i dont necessarily need one I guess just seeing whats available. Sometimes you guys show me things on here that I havent seen yet so I was just curious. Thanks guys

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Slant 6 engines

That's what I thought you meant, and I'm pretty sure I don't agree.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

So.....Dan......what would you think about having the ability to utilize something like a racing-style electric water pump for a B/RB, on a slant?

(The pump with the motor built right into the nose.)

Roger

An electric water pump might be beneficial for certain kinds of race vehicles…I'm not sure how that's related to the question at hand, though. More impeller blades can mean greater throughput volume at low speeds, but it doesn't necessarily mean that—the variable is impeller design and application. It probably does mean cavitation at a lower engine RPM compared to an impeller with fewer blades (and it also means "this is the impeller of about the right diameter that the one plant in China still making slant-6 water pumps decided would fit and probably work well enough").

Seems to me it wouldn't be hard these days to design and machine a true high-perf, low-drag, low-cavitation water pump impeller for the slant-6. I am not intimately-enough familiar with fluid dynamics to make detailed suggestions, but if you put a gun to my head and forced me to describe what I have in mind, it would be akin to the original-design slant-6 impeller (the cast one) but with curved and contoured blades.

In the meantime, some interesting info that looks like it might be applicable to the slant-6 pump here.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

In measuring the depth of my race engine's water pump cavity and the protrusion of the water pump impeller I found there will be a gap of just over 1/4" between the water pump impeller and block. I am going to cut a round plate from .250" stock to fit in the machined recess in the block and close up this gap to improve pump efficiency. Since this engine is going to spin pretty fast by slant six standards the water pump is also going to be driven at well below crank speed.

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Joshua

I have a Proform eclectic water pump on a SBC. It would not take a lot to make a "manifold" to bolt it to a slant.

Most guys just use a Mancini-type universal pump kit.....seems the cheapest easiest to me.

I like the electric because it moves the coolant at a constant rate ......and no power loss. ( I dont run an alternator on the race car)

I never had a slant that needed anymore water flow than the stock pump supplied.

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Yeah....Im the one who destroyed this rare, vintage automobile.....

Aw yeah? Heck, that ain't nothin'. I've got an exegetic water pump on mine!

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Will that do it? I would think it would not. I'd pay more attention to the gap between the vanes and the water pump separator plate.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

The impeller on this pump is quite close to the separator plate. In fact the impeller and plate rub when the gasket is not compressed. Since the back of the impeller is not closed off I want to eliminate recirculation there.

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Joshua

Ah, I see what you're getting at, but I think you would have better results by attaching your plate to the impeller, not to the block. The Flow-Kooler people sell (grossly marked-up) metal discs for exactly that purpose.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.