Fastech 312 Problems
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Fastech 312 Problems
New on here heard it was a great site for powerboats. Have a 2000 formula fastech 312 with twin 454 mpi NOT the mag motors. have the factory 28 bravo one props on it and can get more then 3800 RPM 55 mph out of it. Anything i should look at that could be causing the low rpm. and is terrible getting on plan even with the k-planes all the way down. any help would be great thank you. new cap rotor and plugs this season.
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Your right 4200-4600, I had that same engine a few boats ago and remembered wrong numbers. You may have the factory props but they could have been damaged or modified along the way, or replaced with a same numbered set that were worked over.