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Grabatire 10-15-2009 22:06:16 74.127.239.30 125151 Report to Moderator	The engine in the Oliver 80 is similar to the 18-28. Some of the early 80 blocks still had OLIVER-HART PARR cast into them on the left side near the top. That disapeared as the blocks were used up. The bore size also increased in the 80 engine, but the sleeves are interchangable. The crank and connecting rods are the same in both. My 1936, 18-28 is an all fuel model so it has the low compression head. It may well be that the 18-28 had a high compression head available for gasoline too. The early 80"s were three speeds as were the 18-28"s, however the increase in horsepower of the 80"s caused some rear axle failures so when the four speeds came out, the axles were a bit larger. [Reply]   [Send Email]
DennisT 10-16-2009 20:07:54 63.174.56.72 125171 Report to Moderator	Checked out the 18-28 Hart Parr today. Missing mag, radiator cap, fenders, proper seat; extremely rusty. On rubber; all tires bad. Looked as if it had been pulled out of coulee where it had sat for 30 years. One rear spoked wheel rusted beyond saving. Engine stuck. Another fellow came by and offered $450; he bought it. On my retirement income I couldn't see that kind of price plus all the restoration and replacement of missing parts. I would have given $100 which was my budget for it's condition. That's how it turned out. Thanks for the comments, Dennis   [Reply]   [Send Email]