Unless you are running quite aways outside the WOT Range, adding/subtracting Pitch, within the same Prop Line, usually results in very little difference in Top Speed, but noticeable differences in Hole Shot. Changing to a Higher Performance Prop Model, can allow changes in Setup, which can...
You just said you were gonna take them out and replace them again.
I don't care about the Old Pics, I would like to see what the Plugs that were just run, look like
Phones, laptops, Cameras, actually anything with a Li-ion Battery are not, by Law, allowed to be in Checked Luggage. Cabin Fire Extinguishers are handle these kinds of Fires, but not the Suppression Systems in the Cargo Holds
Raising HP by hopping up the engine, may result in a bit more Top End, but that usually means poorer Acceleration.
More Displacement is the best way to make a boat go faster, if not, then a Blower would help, but then the Rotating Assembly takes a beating
53 isn't all that fast. Were you Way Over trimmed?
If you are only dropping 2mph with 7 additional People, You are doing well
If you are trying for more Speed, fewer Prop Blades will help. Also leave the Wife, Kids and the Mother-in-Law, especially the Mother-in-Law ashore. Girl Friends and...
Does it have a Spark strong enough to jump a 5/16" Gap?
If you use the Pull Stater for the compression Test, you will have to disable the Compression Relief Mechanism. If using the Starter Motor, not necessary.
We always ran OMC or Mercury TCW oils in our outboards for more than 35 yrs, never had a Engine Failure, nor did they ever have any significant carbon on the Pistons. I would be more worried about Carbon building up behind the Rings. There a good Engine Cleaner, and I mean Good, not that SeaFoam...
