- Location
- Billings MT/Rapid City SD
I still have a used Hesco pump for sale. And yeah they are day a night difference over all the other junk out there.
I still have a used Hesco pump for sale. And yeah they are day a night difference over all the other junk out there.
Why are you selling is what i wondered
I run the flowkooler and its not worth the money. Its basically a stock pump with a slightly modified propeller. If you want a good hi flow pump, choose Hesco. Their propeller is a night and day difference:
http://www.hesco.us/shop.asp?action=details&inventoryID=45086&catId=7967
Ya, I am thinking that's just the GMB-110-1080 model because they have a performance line of pumps (with the P on the end) and an OE style line (without the P)..
I didn't think about that.. I suppose I could always insert one of those spring shaped support inserts inside the tube so it doesn't collapse if I have to.
I riveted a flat plate like that to the impeller of a stock water pump. Not sure if it made a difference but it ended up the same as the GMB design. If I had to replace the pump again I would go with the HESCO pump and use Evans waterless coolant.Okay, so the manufacturer claims 300% increase in pump pressure and blah blah blah...but the impeller. It is actually different? Got these views from Summit Racing's site in the 360* view.
Here is the GMP OE Style pump..
And here is the GMP Performance pump..
They claim, "These GMB high performance water pumps have a specially modified, higher performance impeller"...They basically welded a plate on the front of the OE style impeller. You can see from the 360* view if you look close, there aren't any more blades etc. Not what I was hoping for. Maybe they changed the casting a bit or ported the inside similar to a "high-flow" thermostat housing..
There's the tech.
My problem with the GMB casting was that it's not al cast as one piece. There a pieces that fit together, getting it to seal against the block looked to be a pain. It also has a direct "port" that goes to the impeller, where the chrysler/AMC castings have a large open area there that exposes more of the impeller on the intake side.
I'm not a fluid dynamics guy, but the chrysler housing looked much better designed and the GMB design looked like the beancounters had struck and cut as much metal out of it as possible.
I riveted a flat plate like that to the impeller of a stock water pump. Not sure if it made a difference but it ended up the same as the GMB design. If I had to replace the pump again I would go with the HESCO pump and use Evans waterless coolant.
It doesn't spin fast enough to make a difference for balance. I did have to use a press to move the impeller a little farther down the shaft to prevent the impeller from contacting the block though.I think that's about all the more I needed to pass up the GMB....any other affordable aftermarket ones worth mentioning..?
I was actually considering this...but then I started thinking about balancing and the bearing..maybe it wouldn't matter..
I guess I'm reviving a nearly 9 year old thread. I just received a Hesco water pump today (direct from Hesco), and it indeed has their custom impeller, but ... drum roll ... its mated to a GMB water pump body that has the smaller cross section inlet neck. Rather fascinating combination of high flow impeller and possibly restricted inlet neck. I sent an email to Hesco asking their opinion on the water inlet neck x-sectional area.