496 water circulating pump
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06-18-2018, 07:07 AM
#12
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Back on the water and running good with no leaks. Engine temps are steady at 160 when running now. Lots of stuff to change with that job.
At least 5 tubes on the heat exchanger were blocked by small pebbles. I had to dislodge them with a .17 caliber rifle cleaning rod (.22 is too fat). I would never have seen them without removing the exchanger, both end caps and looking down each tube. Crossover to water pump seal was also damaged and the retainer screws were seized. That was fun.
At least 5 tubes on the heat exchanger were blocked by small pebbles. I had to dislodge them with a .17 caliber rifle cleaning rod (.22 is too fat). I would never have seen them without removing the exchanger, both end caps and looking down each tube. Crossover to water pump seal was also damaged and the retainer screws were seized. That was fun.
06-18-2018, 10:05 AM
#13
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Thread Starter
Yep, all new gaskets, O-rings, seals, grommets, pulleys, T-stat, belt and 19 quarts of fresh coolant. Also plenty of anti-sieze, Permatex, rust remover, paint and corrosion guard.
Last edited by NightHawk; 06-18-2018 at 10:48 AM.
06-18-2018, 10:10 AM
#14
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Good to hear. Yep it's amazing what gets into the HE tubes. Compressed air also cleans them out really nicely. While winterizing I pull the endcaps, blow out HE, backflush seawater side cooling system. Those retainer screws are always seized it seems. Dissimilar metals/antiseize is your friend.
