Quote:
Originally Posted by htillman
Installed a 14.5x15 cyclone and only saw a 100rpm (now 5200rpm) increase and at most 2 mph (39mph). Now I'm going to raise the engine to second hole from bottom. It's a150 exec on a 20'. I've tried a Rebel - terrible performance and a Viper (14 3/4 x 16)
Any other recommendations?
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My ETEC 150 HO on my '76 20' Seafari is mounted on hole 4, the bottom one.
The AV plate to keel is 1.5", but hard to measure precisely on my trailer. From the top of the aluminum cap on the transom it is 2.0" to the lower portion of the engine mount. Skippertee observed my AV plate underway and said it was good. My normal watersports running is with a 17"P High Five. I think the only cavitation experienced on any of the tested props that Bushwacker mentioned was with a 3B Merc Black Dismond during a hot hole shot.