Sorry for the late response. I owned a 1992 Explorer for years. I would suspect the "Grady Drive" is pitted and taking on water, mine did when it was about ten or twelve years old. The new owner ended up replacing the bracket with a new unit when he re-powered. I re-wired mine around 2005, as the original wire was not tinned and I had constant voltage drop issues due to corred wiring, terminals, etc. Fuel tanks and fuel hoses are original and suprisingly, still working fine to this day. Transom, stringers were and still are solid. The current owner has replaced about half of thru-hulls due to failure or poor condition. When I sold the boat there was a soft spot in the rear deck, still that way today.
Mine came with the original 1992 (small block) 225 hp Yamaha outboard. I felt the boat was slightly underpowered (and overpropped) for my needs (offshore fishing). In 1999 I replaced the engine with a 2000 250 Yamaha OX66. New engine gave the boat the power I was hoping for, no more dogging it in heavy seas or when heavily loaded for a canyon run with four fishing buddies. Two years after I sold the boat to a good fried the engine blew and they decided to replace it with a new Yamaha 250 four stroke. Weight was a concern, but they went ahead anyway. The boat sits lower than I would like, but they are happy. Fuel economy was something like 2.0 mpg with the 250 EFI at cruise and now it is about 2.5 mpg, but no more two cycle to add (and smell). Tuna trollling we averaged 1.5mpg, now they get about 3.5mpg. (please note all these numbers are stat. mpg, not nautical or knots)
Great boat in my opinion. Arguably, the best riding 24' or less Grady ever made.
