Yeah I was going to do some more checking on things when I get off work today. I really thought it would run close to 50 wot but Garagenc is saying his runs low to mid 40s with the duo prop set up. I looked at volvo's site and they claim 5% more top speed with the duo prop set up, that puts my speeds close to what he's getting when you factor in 5%. I'm thinking the prop is probably my biggest loss it looks like it is old tech even for a aluminium prop. I'm thinking I could possibly get 40 or better with a new style stainless prop. I will get out my gauges and check compression this weekend which would probably be a good time to change plugs. What are the correct plugs for this engine? The guy I got the boat from said that the engine had been replaced a few years back with another used engine I'm thinking that it could even be a 305 ill run the numbers on it and see what it comes up as. I also want to check for timing chain stretch since i cant seem to get it to run right with 8* timing at idle it wants more advance which makes me think maybe there is some chain stretch also. It runs great and has good oil pressure but I guess it could still be a little tired wont know till I do some tests. As far as the gas is concerned I know I need to drain it I just have to get it out of the lake and find a large enough container to put it in. Thanks for all the info! Does anyone else have first hand knowledge of what top speed I should be seeing?
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08-09-2013, 05:23 AM
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