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Correct size prop

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blacksheep

New member
"Hi : I am restoring a 280 Chr

"Hi : I am restoring a 280 Chris Craft and will have a 350 ,300 HP engine I was wondering if that will let me use a 16X14 Prop or is that to much prop?Thanks, Bill Smith"
 
"Shooting from the hip, I'

"Shooting from the hip, I'd say that's probably not going to be enough prop.
Once you get it in the water, you can see what you've got. You want the WOT rpm's to be 4400-4800 or so. To high... you need a bigger prop, too low... smaller."
 
"Like Troy says,....
Til you

"Like Troy says,....
Til you Splash it,+ get a baseline,..... It's hard to tell.....

Do you have Any known data from Before it's been restored,....
HP,.??
Prop Pitch,.??
RPMs,.??

In order to get All of that 300hp,.....
You'll need to Prop to right At 4800rpms......"
 
"Thanks Guys:
I will probably

"Thanks Guys:
I will probably beback with more questions later!THis restoration project is a fairly big one for a Old Dude,be 72 before long."
 
"Ayuh,....

Ya got 20 on Me,

"Ayuh,....

Ya got 20 on Me,.........

I Hope to be Still doing it Then as well.......

Good Luck....."
 
"A friend of mine just replace

"A friend of mine just replaced an engine in the same boat. He was up a little higher in hp and went with a 15X17 prop. He said that it was just a bit too much, and a 15X16 would have been about right."
 
"I have a 18 foot regal with a

"I have a 18 foot regal with an inboard engine 1992Mercruiser (Gas)3.0L (181), 4 cyl what size propeller would i need to get 35-45 knots max this will have the boatout of the water,presently i have a 3 blade with one of the blade chip and i can only reah max 25 knots. Please assist."
 
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