Re: prop survey
I never really paid much attention to my prop. It seems to be working fine. But after reading this thread I decided to figure out what I have. Currently I have a stainless prop with no markings anywhere that I can find mounted to a 1989 165hp, 4cyl. w/ alpha 1 outdrive. The old aluminum prop has the no. 48-78122-21 in the center of the hub and the no. 48 78122 A40 21P on the side of the hub. Holding the two props side by side, they appear to be the same size and pitch. Anyone know if the diameter and pitch can be determined from either of these numbers? Also, according to the Clymer manual the full throttle spec on this engine is 4200 - 4600 rpm. The most I can get is 3600 rpm. I this enough of a difference to be concerned with? The previous owner had the outdrive replaced after the original one was stolen so now I'm wondering if the current prop is different than the original and possibly wrong for this engine / outdrive / boat. Any thoughts?
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Formerly - 89 cuddy 165hp I/O and 95 V21 / 150 Honda
When the people fear their government, there is tyranny; when the government fears the people, there is liberty. - Thomas Jefferson
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