Quote:
Originally Posted by oldfielder
My 23 sf with carbed 5.7 alpha has always topped out right at 40 mph at around 4500 rpm. Max =4400-4800.
I like to,cruise around 28 at 3200 and right there she was burning just north of 10-10.5 gph when my fuel monitor was still working a while back.
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My figures are very very similar to this with a 5.7 mercruiser with an Edlebrock 600 cfm carburetor, on my 23' Tsunami.Fuel burn is also very close.I'm spinning a 15x17 Mirage ss prop.(1.65 I/O gears)
I bought another boat that was crashed,but had a very low hour 5.7 so i got a good deal,and used the engine,and junked the boat.
For my use,I prefer the carbed engine as there are very few dealers or marine mechanics that I trust to service MPI engines,where I boat.
At least with the carb,I can rube goldberg something good enough to get me home.
I also seem to remember that Meruiser had a take out program with their dealers,when repowers are done,you can pick up the original power plant for a decent price.I think they may have even offered a warranty with them.