Need New SB Water Pump, Again!
#2108257
07/11/16 10:55 PM
07/11/16 10:55 PM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
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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.)
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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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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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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
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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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Joined: Jan 2003
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YO7_A66
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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.)
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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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Joined: Jan 2003
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YO7_A66
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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!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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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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YO7_A66
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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.
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.)
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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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Joined: Jan 2003
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YO7_A66
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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!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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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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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
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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.)
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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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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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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.
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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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YO7_A66
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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.)
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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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YO7_A66
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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.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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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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Joined: Jul 2011
Posts: 960 Chicago
PurpleBeeper
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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. 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).
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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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Joined: Jan 2003
Posts: 21,079 Niles , Ohio
therocks
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
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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
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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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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
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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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