Jesse wrote:
I think I have it all fixed. I upgraded to the 4" center dump manifolds with conversion kit from Dennis Moore out of Florida. I went thru the carb while I was waiting for shipping. I did some final tuning today and it sounds great. But when I adjusted the timing which was set at 2deg instead of 10deg I noticed the paint line looked as though I was the first to adjust. Could it have been set like this for the last 23 years or did the timing chain stretch, or a combination? The timing was very steady didn't bounce around much at all. Any ways we'll run it this weekend and see how it goes.
Nobody tunes boats so you're probably the first. 2deg sounds normal for non ethanol gasoline back in the day. They were set very tame, very safe. If you're going to run modern gasoline (e10) it will run MUCH MUCH better with more aggressive timing and 1 jet size bigger then stock in the main jet. I forgot what I set my boat at but 10* doesn't sound outlandish. I actually gained more power then stock. A stock prop should redline @ 4600rpms (VP 3.0) and now I can push it past 5 (but that's not safe). I actually have to re-prop to a bigger one now to avoid future damage.
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