Well that didn't go as planned

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  1. dvw

    dvw Well-Known Member

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    My year so far has ben great, not yesterday. Went to the GLSSA race at Milan with high hopes. Not running index so the throttle was wide open. Didn't know what to expect with Milans history of track prep. Surprise, it was great. 1.27 60ft all day. Weather was crap but 9.18, 9.16 in time trials. Then, coolant on the windshield. Spitting from the overflow vent. Normally I'm a smart guy, not today. Thinking I just grabbed the water pump switch and turned it off by mistake after the run. Cool it off, over flow pulls the water back into the radiator, good to go. Rd 1 .013 light take the win, water spraying out. Oh, I guess I should have checked the pump fuse, blown. Coolant low as well, never checked it after the first failure, dumb. (did check it before any runs). Fill it up, fuse blows again. Pull the fans, radiator, and pump. Damn it. Spare pump is 1/4" longer, no bolts. Test 1st pump. Runs quiet and smooth. Through it back together for rd 2. Seems fine. Blows the fuse driving up to the lanes. Replace the fuse. Do the burnout with pump off. Pump on stage. Loose my concentration and watch my opponent leave. Crap tree is coming down, I guess at it, red. My day is done. Now to get it fixed to leave Thursday for NMCA Indy.
    Doug
     
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    • 1967coronet440

      1967coronet440 Well-Known Member

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      Tough luck, you’ll get it next time no doubt
       
    • Cranky

      Cranky Banned Staff Member FBBO Gold Member

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      Been down that road before....and was your spare pump supposed to be an identical replacement?
       
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      • Frank Mopar

        Frank Mopar Well-Known Member

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        Water temp gauge?
         
      • black64

        black64 FBBO Gold Member FBBO Gold Member

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        Better to use circuit breakers on the fans and pump since the inductive load spikes can take a fuse out quick.
         
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        • dvw

          dvw Well-Known Member

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          This thing has 600 passes. Never street driven. 15 amp fuse has never blown until now. I'll double check the wiring. Meziere says life expectancy is 2400 hrs. I will call them.
          Doug
           
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          • Budnicks

            Budnicks You Can Just Thank Me Latter FBBO Gold Member

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            sorry to hear you had them issues
            that's truly racing isn't it
            luck has nothing to do with it
            shit breaks or quits working & sometimes for the strangest reasons
            no rime or reasoning

            good luck next outing

            Knowing your history, abilities
            you'll have it all fixed by then

            just curious
            do you run all your electronics thru relays ?
            it helps to stave off voltage spikes etc.

            ground issues ?
            seeking ground ?

            Knowing you & your posts here, got your shit together
            I'd bet you already have them routed thru relays
            & both to a manual arming on/off switch too
             
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            • Tex013

              Tex013 Well-Known Member

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              bugger

              Tex
               
            • malex

              malex FBBO Gold Member FBBO Gold Member

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              Oh Bugger... I feel your pain and boy can I relate to that! My meziere pump did the same shit to me this past summer for 3 race days, change the fuse and good for a couple of races and then it would fail again. With mine, it was still under warranty (2 years) and they completely rebuilt it no charge.

              Tough break but at least you're going again this weekend. Good luck!
               
            • bearman

              bearman FBBO Gold Member FBBO Gold Member

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              sorry about the pump issues times look great you will have next time out. good luck
               
            • dvw

              dvw Well-Known Member

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              Radiator, fans, pump out, in, and back out tonight. Ran fine, 3 minutes back in the car, blown fuse. Ordered a new part fro Summit tonight. Leaving for Indy Thursday afternoon. Out of time, I'll mess with this one later.
              Doug
               
            • black64

              black64 FBBO Gold Member FBBO Gold Member

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              When you fuse a circuit we used 125% of stall current of the device to insure there are no blown fuses. What Is your stall current rating on your pump? You wouldn't blow a fuse if running below 15 amps. But stall might exceed that.
               
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              • dvw

                dvw Well-Known Member

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                When pump was new it drew 7 amps running hot. It's had a 15 amp fuse in it for 6 years. Even blows a 25 now. But it has to run a few minutes first. My bet us it has a short to ground in the armature winding that touch when it gets warm.
                Doug
                 
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                • Mike Gaines

                  Mike Gaines Well-Known Member

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                  How about this....my Meziere Pump FAILED also this weekend at the first round of the Sunday summit race in Famoso. Didn't blow the fuse, just quit running. They said to send it back. Only 85 runs on the pump. they said to send it back for repair. I bought a Meizire because I didn't want to buy a cheaper Chinese pump that would fail. how about that.
                   
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                  • dvw

                    dvw Well-Known Member

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                    New pump is in. Loaded and ready to leave for NMCA Indy tomorrow. By the way Meziere calls for a 20 amp fuse.
                    Doug
                     
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                    • bearman

                      bearman FBBO Gold Member FBBO Gold Member

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                      good luck to you. enjoy and have fun
                       
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                      • 1967coronet440

                        1967coronet440 Well-Known Member

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                        Gotta love summits speedy shipping, they are definitely on it.
                         
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                        • oldbee

                          oldbee Well-Known Member

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                          Good luck Doug.
                           
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                          • Mike Gaines

                            Mike Gaines Well-Known Member

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                            Report: It wasn't my Meziere Pump that failed. It is in the wiring/switch somewhere. I will find the problem tomorrow. I just isolated the pump and wired it independently of all my car wiring and in car switch and pump works fine
                             
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                            • malex

                              malex FBBO Gold Member FBBO Gold Member

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                              ---
                              Take a spare pump with you Mike. Mine did the same, I had even wired a light in the power wire leading from the relay to the pump. Sure enough, the light went out, pump quit, somewhere between the burnout box and the stripe. I hope you have better luck than I did.
                               
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