ZZ13
Well-Known Member
If it's really bad, you won't be able to get the core to slide out. If it does slide out then look for lots of pitting and metal loss at and about the ends of the aluminum case. Also look for white stuff caked on the cooling fins of the core. If you think it's still useable, after you clean it up and put it all back together, have it pressure tested. Sbmar.com has a nice tutorial on the process.Thank you for your comments. Actually there were some circumstances including the owner is a friend of a friend, very good price, and the engines seem very clean (600 hours), that made me buy it without the full inspection (without hauling it out). I got a favorable dockside and engines inspection though. Skipper now admits that he did not push the throttle to the max at sea trial!!
Will do another test when the weather permits and check everything else and post the results here. Thank you for your help.
There was virtually no smoke during the trials.
If we disassemble the aftercoolers, what are the signs that the core needs replacing instead of just cleaning?