I have a Grandsport with a Merc 150proxs four stroke. Runs 81mph and it’s a nice setup.
Really no complaints. But I suppose if I had to do it all over again I’d get a 150/175 Yamaha SHO and flash it. Now you have a mid 90mph boat that has all the benefits of a four stroke and still sub 500lbs...
Hi Billy! Nice to hear of others experimenting with this package! I think I need to come up higher to get some more RPMs out of the 28 promax. 5830RPM @78.5 mph and I’m 3/16 below the pad. Think if I come up to even or so that will be worth a couple hundred RPM maybe get me low 80’s.
Hi everybody! Figured I’d update you all with my progress thus far with the boat. I have a 2021 grand sport with a Mercury 150proxs purchased one year ago almost to the day. I’ve since had the gear case coned locally by Ronnie Holzmacher. The gears in this are 2.08 requiring me to run huge...
I’m fairly light 165lbs. The boats brand new picked it up in September last year 2021 model. Never walked on the deck. But did gently crawl up it to tie off on the bow eye and heard light crackling sounds that was discomforting but I’ve heard people walk on them. I wasn’t sure if that was ok or...
Hey guys, I was wondering if I could see some peoples setup and recommendations for a smallish GPS / Chart plotter and where and how you mounted it in a Grand Sport. Thanks!