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Who is running Stewart Components waterpump?

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ga289stocker

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#2 ·
Haven't really heard of anyone running these on a 4.6 since the stock pumps are fairly good. You wouldn't really gain anything unless you went with an electrical water pump. My uncle used to run the Stewart pumps on his 5.0's.
 
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#3 ·
There used to be a couple of members advocate them but that was a couple of years ago. Those advocating them suggested that electric water pumps were track only and not reliable enough for street use. Sorry to differ. I've been running a Meziere electric water pump for over 4 years and 77,000 miles.
 
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#4 ·
Eagle2000GT said:
There used to be a couple of members advocate them but that was a couple of years ago. Those advocating them suggested that electric water pumps were track only and not reliable enough for street use. Sorry to differ. I've been running a Meziere electric water pump for over 4 years and 77,000 miles.
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I've also been wanting to run the Meziere electric water pump. Reps to you for the info, gives me some relief since you've been running it for upwards of 100K miles.

The Meziere pump, UD pulleys, and solid motor mounts would probably wake my car up pretty decently in the lower RPMs.
 
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#5 ·
Stewart pumps are better then stock by a lot. Electric pumps are hit or miss from what I've seen and heard, but the Stewarts aren't nearly as prone. The impeller is much larger then stock thus allowing more coolant to run through the motor cooling it more efficiently. Honestly I'd run it instead of spending the extra $250 for an electric but that's just my opinion.
 
#6 ·
You have to be careful when putting a pump with a bigger impeller on it. You can push too much coolant and cause the car to run a little hotter from the coolant not being able to sit/pass long enough in the radiator and not pulling all the heat out of it

I sold a lot of stewart water pumps when I worked at a speed shop for sbc and sbf's and had great reviews from the customers on them
 
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#7 ·
You two get free reps since it won't let me rep Eagle right now, lol.
 
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#8 ·
not bitchin here, Ill rep him for you
 
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#9 ·
i ran a mezier electric pump for 3 years and it still in the car in the car kicking. my buddy got one and it came faulty so he had to send it back. not his fault and the company covered it. btw mmr has the same water pump as the stewart pump for 79 dollars
 
#10 ·
I have a stewart water pump and it turned out just fine. There is a big difference between the impellers of the stewart pump and the stock pump, kind of wish I had pictures to show. I can remember reading where some people claimed double digit gains, but that is probably with high miles and worn bearings on the stock pump. I have had mine for the last few years, have absolutely no complaints.
 
#12 ·
I have a Stewart pump also, over two years with zero issues. I gained 20whp with a combo of xpipe udpullies and the pump. I'm sure most of it was the xpipe but it helped. It's actually highlighted in Shawn highlands book as notable upgrade. If my memroy serves me correct the hp difference between the Stewart and the electric pump is roughly 3 hp max
 
#13 ·
Both the Stewart and Meziere pumps are good pieces. I personally chose the Meziere route back in '06, and it's still kicking today.
 
#14 ·
i have one. didnt really notice a gain from it. i put in the pump and a 180 thermostat at the same time and the car runs a little cooler. if you need to replace it i would go with the stewart but there are better ways to spend 150 bucks
 
#16 ·
I've seen back to back dyno runs on both a 2v 4.6 and a 3 valve 4.6 with nothing but the addition of an electric water pump. Both peak and average gains of less than 5hp...... not really worth the money if you ask me unless its cooling related. I like the idea that if my blower belt breaks I can still drive the car but thats about it....
 
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#17 ·
Nitmare67 said:
I've seen back to back dyno runs on both a 2v 4.6 and a 3 valve 4.6 with nothing but the addition of an electric water pump. Both peak and average gains of less than 5hp...... not really worth the money if you ask me unless its cooling related. I like the idea that if my blower belt breaks I can still drive the car but thats about it....
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I'd imagine the whole serpentine setup takes power percentage-wise, such as the drivetrain. So, the more power, the more it'd most likely help get to the wheels.

I like the idea for three reasons. Freeing up some power, even if it's 4 horsepower or 15, use with UD pulleys (Probably gonna have some Steeda UD pulleys soon, if I go back to my idea of a blower, oh well, they'll come off), and the hope of making it easier to maintain my high of 28 mpg, if I go on anymore long trips.

Just wish they were cheaper, to make it more justifiable.
 
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#18 ·
Kevin C said:
So, the more power, the more it'd most likely help get to the wheels.
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:yes Since horsepower is the rate at which work can be done. A higher hp, higher rpm engine will see larger benefits than a lower hp/rpm engine.
 
#19 ·
Exactly what I was getting at.
 
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