Old as Dirt!
Join Date: Nov 2008
Location: Tampa Bay Area
Thanked 142 Times in 135 Posts
Rep Power: 8
Re: Effect of vinegar on my impeller
MaineSail pointed me towards Rydlyme a while back. Oddly, it is really hard to find it in the PNW. My nearest dealer is selling it out of the Bremerton Yacht Club as a side business. It would also require an external pump to circulate it through the system. I was hoping for a somewhat simpler process using cheap house hold products and utilizing the impeller to drive the product through the engine. Oh well, thanks for the info, much appreciated.
A similar product that you may be able to find locally is (click on) "Barnacle Buster
A method I use for the heat exchangers on our engine and AC system is a 5 gallon bucket coupled with a small inexpensive submersible bilge pump. One connects the discharge line from the pump to the injection nozzle on the discharge side of the heat exchanger (temporarily disconnecting the tube to the mixing elbow in the case of the engine) and a return hose from the input side of the heat exchanger back to the bucket (the reverse flow helps clear debris out of the tube bundles). The solution of RydLyme (or Barnacle Buster) and water is then circulated by the pump which can be run off the ship's batteries with jumper cables. One can test the efficacy of the solution by dropping a small piece of shell in the solution. If the solution "fizzes" up around the shell, it's still viable. While its difficult to know precisely how long one needs circulate the solution to completely remove scale, there are time guide lines on the web-sites for both solutions. In our case, I usually let the pump run for 4 or 5 hours with solution and then follow up with fresh water for awhile. One trick is to tie a ladies stocking over the end of the discharge hose to capture debris and suspend the pump several inches above the bottom of the bucket such that it does not suck up and recirculate any sand/debris that is washed out and escapes from the ladies stocking "filter". You may be surprised at the increased through-put in your systems once you've done this exercise.
"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
Last edited by svHyLyte; 12-29-2013 at 12:50 PM.
Reason: Add addendum.