Help me pick a BBC high volume water pumps - which one ?

There's a bunch out there that claim to be High Volume and a huge range in price. 70.00 to close to 350.00 for a Stewart stage 4.

I'm not afraid to spend some dough on this thing , but no sense in overpaying either.

What's the big difference in weiand's "action plus" or their "team G" pump ?

Anyone ever deal with KMJ performance ? they have a 70.00 pump.
http://www.kmjent.com/cart/bbc-chevy-hv-aluminum-water-pump-short-396-427-454.html

Weiand action plus
http://m.summitracing.com/parts/wnd-9212p

Weiand team g
http://m.summitracing.com/parts/wnd-9224

Then there's hotheads ( im sure its repackaged )
http://www.hothemiheads.com/water_pumps/water_pump_bbc.html

And then the top of price range, and if you truly get what you pay for this should be the best . Why only a 1 year warranty on a 300.00 water pump ?
The Stewart stage 4
http://www.stewartcomponents.net/Me...PROD&Product_Code=41203&Category_Code=ChevyS4

They have 1,2,3 stage also.

This is going on a Chrysler hemi, 345 out to 421 cubic inches with a 671
A very expensive radiator and waterless coolant . Very NOT ****ING cheap.

 

Bench racers ?

 

High volume pumps move too much water and it doesn't have enough time in the radiator to cool properly, and often creates too much pressure. Sure pressure increases the boiling point, but select a radiator that can take it.

Similar principles applies to high volume oil pumps, too much pressure can push bearings out.

If you're building a monster race engine maybe someone with experience can chime in.

Sent from my DROID device using the TJJ mobile app

 

I used the Edelbrock on my 354 and it runs cool with a Br***works rad, and made in the USA too.

 

The pressure increase should stay between the block and the thermostat .
As far as moving too fast thru the engine , the Tstat provides a restriction that will limit the amount of coolant flow thru the block. If the pump flow exceeds the Tstat flow the pressure will be increased behind the tstat. If the Tstat flow exceeds the pumps output then things go too fast, pressure drops and heating issues develop. The byp*** circuit thru the heads might flow quickly but it will also be restricted by the small head gasket holes. I'm trying to see if I can increase the volume of flow thru the heads without increasing the speed. Venturi port , still playing with it.

The pressure in the radiator and hoses is from heat induced expansion of the coolant.

Now this will be using the waterless coolant. So the heat induced expansion isn't as great as with water. The boiling point is well above 300 without any pressure at all. And the say its best to use a Tstat in the 200 range.

This is my understanding of trying to study what's available to study on it.

Pretty much set on a high volume pump, just don't know which one.

 

Bump

 

I think the only way to accomplish this is larger input/output ports. Obviously I'm no expert.

Sent from my DROID device using the TJJ mobile app

 

The two 354 Hemi's I have run a BBC pump, nothing special. The early Hemi seems to cool well.



Ago

 

Over the years I've found that if you use a pump w/a CAST iron impeller with curved vanes, instead of those re builder tin blades that look like an alternator fan, the pump works really well and the engines run cooler. ARATEX pumps used to come with cast impellers but lately it seems like you have to buy an Edelbrock or Weiand pump, expensive but there is a difference.

 

I also plumbed the by-p*** on top of the BBC pump into the crossover between the heads. I don't know if it makes a difference, Because I did it to both motors. My 32 Fords with early Chry. Hemis take 4 gallons of coolant.


Ago

 

What are you running with the blower ?

 

7 PSI boost,28 deg. total timing.


Ago

 

Sorry I meant for a water pump.

 

Moroso alum. short BBC. wp.


Ago

 

Thanks .

 

"Waterless Coolant" ??? Elaborate please....

Back in America's younger days a warranty was against the manufacture's defects, not because of "other" things such as improper installation or misuse, these days it is a sales gimmick, in my humble oppinion. We are the only country who makes our decision based on this as opposed to the merits of the manufacture or track record, just my two cents.....

 

http://www.evanscooling.com/

That's a good place to start and google will tell you more

 

I got the Weiand 9212 aluminum water pump from Summit for $79 a couple years ago. Worked great on my 427, and always ran cool enough. Looks like they're up to $100 now.

 

Had a Team G Weiand that failed on it's first outing. Spit the cover gasket out. Had a bad core shift problem. Still have it on the shelf.

Replaced it with and Edelbrock unit, worked ***s until I took it off and replaced everything with the Vintage Air Front Runner which has a Stewart pump. The issue I have had with this pump is the lack of the byp***. If you know BBC's then you know that Byp*** is a must!

 

So the Stewart doesn't have a byp*** ? The pics I saw showed a byp*** for the Stewart's maybe I'm wrong or misunderstanding .

I defiantly want the byp*** on this one

 

Could be something they do just for Vintage Air, but this one doesn't have the byp***. And in the instructions from Stewart, they want you to run their thermostat with a hole in it or to drill out your own thermostat. I tried it that way but es no bueno. I put a surge tank/ degas bottle and all is good.

I got stuck in a monster traffic jam this morning, sat in 80+ degree weather with the ac on low cool for about an hour. Temp gauge sat on the 180 mark and didn't move.



The lower -6 line is coming from the manifold to the tank The heater line to the water pump is split, pump to tank and then the return from the heater is also to tank. The -4 line is an air bleed.

 

Bet that think hauls *** .

 

It does!

And it's a hoot to drive. I feel like a large Shark swimming through feeder fish out on the highway.

Other than the McLeod Street twin clutch with solid hubs, contributing to the gear lash in the drive train, it's very nice to drive as a daily. Even been getting 14-15 MPG out of it this last week.

 

How about the Br***works Flow cooler water pump?

 

Stewart CL*** 3 is the best water pump on the market

 

Ok, does it have a byp*** ?

 

Sorry Stage 2 not stage 3

Try This does have a byp***


Stewart Stage 2 Aluminum Water Pump - Chevrolet BB SKU: STE21204


Stage 2 - These pumps from Stewart Components are ***embled with exclusive Stewart Components 356-T6 heat-treated aluminum casting. These pumps include several significant performance modifications, compared to Stage 1 pumps, for maximum performance. Recommended for stock, OEM, or mild to moderate racing applications.
All Stage 2 pumps feature:
Exclusive Stewart 356-T6 heat treated aluminum casting
Extra rigid cam stop with 3/8" adjustment screw (small block Chevrolet short castings)
Extra material adjacent to block mounting bolts to allow drilling and taping of up to 1/2" NPT holes for installing external coolant lines to the center of the engine (small block and big block Chevrolet short castings)
Precision ground fan hub for perfect pulley alignment.
Equal flow to left and right cylinder heads.
Precision impeller installed to exacting tolerance.
Zinc plated rear cover bolt
Higher flow and pressure for better cooling
A full one-year warranty.
Models with 3/4" ball/roller bearings offer five times the strength of standard bearings.
Stock external dimensions and hose location
Special water/antifreeze compatible seal ***embly

 

Yea the Stewart is high on my list

 

Night crew input ?

 

Once more