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#1
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Pencil zincs
I'm winterizing my 5.7 Mercruiser which has freshwater cooling. The most
important part of this rather simple process seems to be removing two drains on the manifold elbow things on each side of the engine and one on the heat exchanger. The latter one has a pencil zinc, the other two do not. Would it be prudent to install pencil zinc anodes on those two also? The other one corrodes pretty quickly in salt water and I'm taking this rig to the Bahamas, where I don't want all that warm salt water to corrode my cooling system. What could it hurt? Capt. Jeff |
#2
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Pencil zincs
You can not over zinc. But try one of the ones you have to make sure it
will fit. "Messing In Boats" wrote in message ... I'm winterizing my 5.7 Mercruiser which has freshwater cooling. The most important part of this rather simple process seems to be removing two drains on the manifold elbow things on each side of the engine and one on the heat exchanger. The latter one has a pencil zinc, the other two do not. Would it be prudent to install pencil zinc anodes on those two also? The other one corrodes pretty quickly in salt water and I'm taking this rig to the Bahamas, where I don't want all that warm salt water to corrode my cooling system. What could it hurt? Capt. Jeff |
#3
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Pencil zincs
Also notice where the 2" end of the zinc will end up WHEN it breaks off
in 2-4 months. Pencil zincs have a habit of eroding nearest the nut and then breaking off (Especially in high flow environments). I have had decent luck coating the first 1/2" of zinc nearest the nut with paint or caulk and letting it dry before install. Lawrence James wrote: You can not over zinc. But try one of the ones you have to make sure it will fit. "Messing In Boats" wrote in message ... I'm winterizing my 5.7 Mercruiser which has freshwater cooling. The most important part of this rather simple process seems to be removing two drains on the manifold elbow things on each side of the engine and one on the heat exchanger. The latter one has a pencil zinc, the other two do not. Would it be prudent to install pencil zinc anodes on those two also? The other one corrodes pretty quickly in salt water and I'm taking this rig to the Bahamas, where I don't want all that warm salt water to corrode my cooling system. What could it hurt? Capt. Jeff |
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