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Messages - FordThunderBolt

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Engine Mechanical / Electrical / Re: 60 mph @ 4400 rpm
« on: May 28, 2022, 11:02:45 am »
Not sure about impeller size just put good parts and cam in the motor and thought it would make more Hp comparing to that Berkeley chart. I?m happy with the boat, have noticed the loader is well below the hull about 1/4 inch and the transition from keel to intake isn?t a smooth transition.

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Hulls / Identity my hull
« on: May 14, 2022, 07:55:55 pm »
Title says (1978) F and K marine

Looked throughout the internet and couldn?t find anything.

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Engine Mechanical / Electrical / 60 mph @ 4400 rpm
« on: May 14, 2022, 07:47:02 pm »
I built a pretty healthy 460 for my 18 Berkeley jet boat. When I look at impeller absorbed Hp chart it says 4400 rpm is only 300 Hp I hope my engine has more than that lol but I feel 60 mph is respectable at that rpm. What does the forum think ??

4
Engine Mechanical / Electrical / first jet boat engine
« on: May 12, 2020, 06:53:36 pm »
Trying to get advice on my first jet boat engine build.

-1978 F&K Marine 18ft boat (can't find any info about this boat)
-Berkeley split bowl (not sure what letter impeller)
-through transom log style headers

Bought boat with a seized engine and what I found on the tear down is motor has dove heads with stud mount rockers, stealth intake, Holley 750, unknown cam, scorpion roller rockers, truck rods, stock .030 pistons. Looks like the crank spun 1 main bearing so I figured get the crank turned and re-ring/bearing with flattop pistons. Any suggestions for a good warmed over stockfish build??

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