(Posted separately to uk.rec.engines.stationary)
I've got a badly corroded cast iron gearbox casing to repair. It's the reducing gear from a Lister JP marine. These have a water cooling jacket, superfluous on a 21hp JP2, but this one has evidently suffered from a past life with salt water passing through. One side of the water jacket literally fell off recently, and the owner was complaining that it was leaking oil. I've ground off most of the remaining water jacket, to get at what was behind. After removing loads of scale, I'm left with gearbox side walls which are paper thin in places, and perforated on one side. There should be enough mechanical strength left in the webs through which the retaining bolts pass. I reckon the only satisfactory repair will be by getting it grit blasted, & then coating the sides with epoxy. Welding is, to my mind, out of the question. Any suggestions as to what is a good epoxy to use? Or should I just bite the bullet & contact the local Belzona rep, with the consequent emptying of wallet?
Cheers
Tim Tim Leech Dutton Dry-Dock
Traditional & Modern canal craft repairs