Quote:
Originally Posted by RidgeRunner
Cut it. I don't know the reason for the bevel unless there is a clearance issue in the block at the combustion chamber or different porting from one block to another. If you don't cut it you would have more compression on that hole or worse, interference. You can take it to a machine shop or you can take out the file and do it yourself. You will get it plenty close enough just don't use anything that will cause a build up of heat and make sure it is nice and smooth like the rest of the piston.
I responded to this thread earlier that the tower of power likes to spin free but was wrong on the rpm. Some of the 150 hp inlines like to spin up to 6800 to 7000 but I read somewhere that the 90 and 115 like fewer like 5800 to 6200 max. The fact that it lived as long as it did is proof that you must have been doing it right all along.
How about the tools, were you successful in locating the tools you needed?
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Since I have 5 non beveled pistons I will probably play with one to do it myself. As to the rpm's the manual calls for 5000 to 5200. I have the largest jets in the carbs to make sure it is rich, use only Quick silver oil and as per two different mechanics which dont know each other, I run premium gas for the octane, helps prevent knock. I have most of the tools coming with the order of parts and found the two tools that are NLA at Powerhouse marine, these two are in my pocession now. If you need to do a rebuild on one of these let me know and I can sent up a rental plan for the tools. LOL