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Need New SB Water Pump, Again! #2108257
07/11/16 10:55 PM
07/11/16 10:55 PM
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Indiana
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YO7_A66 Offline OP
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Took the car for a spin tonight and noticed green fluid spraying up onto the windshield. Got back to the garage and found fluid pouring out of the weep hole on the pump. I thought this may have been an issue from swapping out a 195 thermostat to a 180 unit last weekend. So I removed the pulleys and heard a SCREETCH noise from the pump when I rotated it back and fourth.
This is the second NAPA pump in four years. The WOT shift points are 5800rpms. What pump do you recommend that may last longer than two years and 1500 miles?
Thanks


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108280
07/11/16 11:11 PM
07/11/16 11:11 PM
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Lincoln Nebraska
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RapidRobert Offline
Circle Track
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Lincoln Nebraska
not sure on a brand as pumps tend to be very reliable (in my exp). I'm wondering if the impeller moved foreward & is rubbing the body or rearward & is hitting the t cover smooth recess (there's alot of distance on the 2nd one so I would guess the pump body. here's a BTT for you


live every 24 hour block of time like it's your last day on earth
Re: Need New SB Water Pump, Again! [Re: RapidRobert] #2108309
07/11/16 11:32 PM
07/11/16 11:32 PM
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Indiana
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YO7_A66 Offline OP
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My last unit from NAPA moved and rubbed into the housing. I am thinking like you that this one did it too.
I am looking at the Milodon or the March water pumps IF they are worth it.
Thank you


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108421
07/12/16 01:04 AM
07/12/16 01:04 AM
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Wichita
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GY3 Offline
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Get the heavy duty pump with the bigger shaft and ribs instead of holes. Police car application was what I asked for years ago...

Re: Need New SB Water Pump, Again! [Re: GY3] #2108434
07/12/16 01:17 AM
07/12/16 01:17 AM
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MN
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58pwrwgn Offline
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my new, not rebuilt, napa sb pump is shot. 2 years old and maybe a 1000 miles. i got on it on the onramp and the bearings let go. i was going to use the life time warranty to pick one up tomorrow, now you have me worried that they are junk. my junkyard one lasted 20+ year before it gave out.

Re: Need New SB Water Pump, Again! [Re: 58pwrwgn] #2108462
07/12/16 02:02 AM
07/12/16 02:02 AM
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Eagle, Idaho
Neil Offline
The Doctor is in.
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I'd buy an Edelbrock if you can stomach the cost. Next choice would be a Milodon or Flow Cooler, although I have not ran either one of those. The Milodon resembles the mopar heavy duty "police" style pumps with the ribs cast into it.

I used to buy NAPA water pumps for my daily driver (Chevy),and they would fall apart every few years - mostly in the summer. Same thing with their clutch fans. I now get my clutch fans from CARQUEST as they seem to last much longer.

Re: Need New SB Water Pump, Again! [Re: 58pwrwgn] #2108534
07/12/16 08:34 AM
07/12/16 08:34 AM
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Indiana
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YO7_A66 Offline OP
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This NAPA unit also went out right after I got on it!
What causes the internals to move towards the housing and to cause this?

I have attached a picture showing what happened to my last NAPA unit and I am assuming that this one has done the same thing.

I am looking at this Milodon #16250 from Summit. Does this look like the HD/Police unit?

Thanks everyone!

IMG_1295.JPG

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108535
07/12/16 08:38 AM
07/12/16 08:38 AM
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Indiana
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YO7_A66 Offline OP
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This is a picture of the existing pump that will be replaced (NAPA/Tru-Flow #43026P) and the previous unit. The orange unit has holes in the front and the NAPA unit has ribs.

NAPA 8 #43026P vs Old 6.JPGIMG_1296 (2) (800x598).jpgIMG_1298 (2).jpg
Last edited by YO7_A66; 07/12/16 09:40 AM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108536
07/12/16 08:39 AM
07/12/16 08:39 AM
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Indiana
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YO7_A66 Offline OP
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This is the Milodon #16250 from Summit. I may purchase it before the day is over if there are no known issues with it.

Thanks everyone!

MIL-16250_OH_ml.jpg

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108542
07/12/16 08:56 AM
07/12/16 08:56 AM
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bethlehem pa
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hope this is just an issue with SB pumps. i just replaced my RB one with a NAPA unit.....

Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108601
07/12/16 11:28 AM
07/12/16 11:28 AM
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W. Kentucky
justinp61 Offline
I Live Here
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My FlowKooler wp has been on three engines in the last thirteen years and is still going strong.

Re: Need New SB Water Pump, Again! [Re: justinp61] #2108623
07/12/16 12:03 PM
07/12/16 12:03 PM
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Indiana
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YO7_A66 Offline OP
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I just ordered the Milodon #16250 water pump and the Milodon high flow 180 thermostat. I just replaced the thermostat last week with a standard NAPA 180 but I read that a HF pump needs the HF thermostat. I needed a few bucks to get the free shipping, so I ordered the Milodon 180 thermostat too.

I am assuming the pump went bad or that my belt tension was too tight. I put on a Powermaster (120a) alternator which took a little more belt tension to keep it quiet. I wonder if either was the actual issue.

Thanks to everyone!


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108636
07/12/16 12:15 PM
07/12/16 12:15 PM
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up yours
Supercuda Offline
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Years ago 1993, I yanked a 360 out of a Doba to put into my Dart. Put a brand new TRW HD pump on it. Last 20+ years. Heck, it outlasted TRW. But I bet it wasn't sourced from overseas either.

I recently bought a new pump for my daughter's exploder, got Gates from Rockauto. For a 70 and up LA I'd use GATES 43026P, $22 from RA, has the impeller disc on it, lifetime warranty, new.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Need New SB Water Pump, Again! [Re: Supercuda] #2108655
07/12/16 12:48 PM
07/12/16 12:48 PM
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The Pale Blue Dot
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Most bearing failures are due to over tightened belts, followed by miss-aligned pulleys. Looking at your picture you has a corrosion/cavitation problem, you need to very aggressively flush the cooling system out, even get a sacrificial anode. twocents

Re: Need New SB Water Pump, Again! [Re: Skeptic] #2108659
07/12/16 12:57 PM
07/12/16 12:57 PM
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Indiana
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YO7_A66 Offline OP
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Skeptic,
That picture was taken three years ago before my last pump install. Due to the corrosion issues, I flushed out the system and added RP Ice. Last weekend when I pulled the thermostat, the fluid in the intake was very clean. The fluid that came out of the radiator was very clean too. I will flush it again before making these changes.

I will also loosen the belt this time a little bit just to make sure.
Thank you.



1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: justinp61] #2108663
07/12/16 12:59 PM
07/12/16 12:59 PM
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Indiana
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YO7_A66 Offline OP
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Justin,
I just called Summit to change my order from the Milodon unit to the Flow Kooler 1700. I made the previous order and then read your post. Then I spent some time reviewing the FK information.

Thank you.

Note: FlowKooler confirmed (per email) that a HF thermostat should be used for maximum flow rate.

bra-1700_2uj_ml.jpgbra-1700_uj_ml.jpg

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108765
07/12/16 03:22 PM
07/12/16 03:22 PM
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Michigan
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BlueRacer69 Offline
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I've had a Flo-Kooler water pump on my car for 16 yrs now, still going strong (knock on wood). Whenever I do a new pump or change my anti-freeze I always add a can of water pump lub to the rad.

Re: Need New SB Water Pump, Again! [Re: Skeptic] #2108788
07/12/16 03:53 PM
07/12/16 03:53 PM
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Chicago
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Originally Posted By Skeptic
Most bearing failures are due to over tightened belts, followed by miss-aligned pulleys. Looking at your picture you has a corrosion/cavitation problem, you need to very aggressively flush the cooling system out, even get a sacrificial anode. twocents


Skeptic is giving you some good advice. Bearing wear (& impeller shaft getting into the housing) is 99% a belt issue. CORROSION (and/or cavitation erosion) is a function of the overall cooling system design & the coolant you're using. FYI-I've laboratory tested Royal Purple's Purple Ice and when used as directed (may need more than one bottle with deionized water) it does a good job at preventing corrosion (fyi-my company used to make Purple Ice for Royal Purple).


70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"
Re: Need New SB Water Pump, Again! [Re: YO7_A66] #2108806
07/12/16 04:20 PM
07/12/16 04:20 PM
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Niles , Ohio
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therocks Offline
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
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Niles , Ohio
Man you guys must have bad luck or doing something wrong.At the shop we used tons of remans and they went on car driven every day unlike most here.Had very few problems.Only time we went new was customer asked or they came new only.Installed a bunch on SB abd some on BB mopars and basically no problems.My 65 I did use a Miliodn BB pump just because the housing etc is aluminum.My kids had like 3 or 4 SB abd a BB and all got reman pumps.truck went at least 30K in a few years.If you go thru that many pumps something is wrong.Rocky


Chrysler Firepower
Re: Need New SB Water Pump, Again! [Re: PurpleBeeper] #2108807
07/12/16 04:23 PM
07/12/16 04:23 PM
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Indiana
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YO7_A66 Offline OP
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I have used the Purple Ice now for the last three years. Every time I change thermostats or drain the radiator I put another full bottle in. I have seen the difference that it can make and I will be picking up another bottle tonight for this repair.

I will give my belt the 1/2"-3/4" or so slack this time around. I know that it was tighter than this when I took it off last night. (When I installed the alternator, I kept getting the belt tighter until it quit making noise.)

Thanks for the reply.

EDIT: I wonder if a new belt might help get a better grip? It is a solid v-belt of unknown age.

Last edited by YO7_A66; 07/12/16 05:20 PM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
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