dyno
#1
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Join Date: Oct 2006
Location: Las Vegas Nevada
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dyno
If your motor gets Maximum TRQ. @ 4800rpms and Max HP @ 5900 my Question is how many rpms are needed over the 4800 to be safe?? In other words could you prop it at say 5200 and be ok?
#3
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I read somewhere that a boat that is slightly over propped is the fastest. I would think that 5600 would be safe if you were trying to have a good cruise and good top speed. Over prop too much on a high perf. boat and you will run into problems with detonation, poor fuel milage, sluggish performance.
#6
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You will possibly cause detonation if you run so much prop it onlt turns 5200,I would prop it to turn 5900 on a warm day and run slightly over when everything is perfect,Smitty
#7
Lakeside Restorations.com
Commercial Member
Prop it as close as possible to the builders desired WOT rpm without constantly going over it.. I prefer to keep my units propped so that we are about 100rpm below desired wot rpm. This way if conditions are ideal & temps are low the boat could hit the DWOT without going way the hell over & when you are running the resto of the time you are not lugging the engine hard. Jamie / Lakeside
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www.LakesideRestorations.com 570-639-2628
We Make Fast Toys Faster, Cool Toys Cooler and Old Toys New!.. Performance, Custom & OEM Parts & much MORE![/CENTER]