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The Mothers aluminum polish worked really well on the trim for this 47 year old motor. The aluminum emblems on the cover were really dulled out. After I polished them I shot a couple of coats of lacquer clearcoat over them. Here is a picture of the finished paint job.
These early 4Vs were very popular on the original Whaler 16 footers, They had a lot of torque and could push the boat along about 35 mph with a load of people.

Mine was originally a long shaft, as would be needed on a Whaler, but I converted mine into a shortshaft by removing the center 5" spacer on the mid section, sectioning a 5" piece from the driveshaft and had it welded, sectioned 5" from the shift rod and rewelded, and cut 5" from the two copper water tubes. Cost was about $100 for the machine shop work on the driveshaft. It is important to find a machine shop that can do this correctly so the shaft is still perfectly straight.

http://i27.photobucket.com/albums/c19...ight75.jpg