455 Jet boat help needed

[sawtoothguy]

I just bought a Tahiti Jet boat and it has been sitting in a barn for ten years, it came with the headers, front and rear mounts and a rusty starter and two driveshafts (no pto adapters)
I just bought a good complete running 68 ho 455 from a wrecked car, but i need help finding out what else i need to get it up and running
I know the alternator usually mount low in boats, where can i get the mounts and what alternator?
I have a electric fuel pump in the boat (most likely doesnt work) and dual tanks, should i remove the mechanical fuel pump and make a block off for it?
what other stuff do i need to make the car motor work in a jet boat?

I am going to rebuild the motor after the summer is over, i know i need to mod the motor for its oil issues, the boat is a old 72 21ft Tahiti with a very round nose, im going to baby it until i rebuild it but i want to get out on the lake...

also all the cables are frozen up, i guess i need those too, any advice would really help, sorry for the rambling....

[OldSleekOlds]

What Jet Pump does this boat have?

[sawtoothguy]

Boat has a Berkeley 12jc-a, im assuming it has a "A" impellor? the motor i bought is the 390hp/500ft lb 68 455 HO, it is stock and complete oil pan to carb, and is in running shape, i just need to get it mounted and hooked up!!

[OldSleekOlds]

It is customary to remove the water pump and replace it with a "block off" plate. The engine cooling water is supplied from the jet pump.



This is the front of mine.

[sawtoothguy]

I have that plate, and thanks to you i know how to hook that up,
how did you mount the alternator? and is that a stock alternator?
and is that a water pressure gauge, and whats the other gauge?

[OldSleekOlds]

I have that plate, and thanks to you i know how to hook that up,
how did you mount the alternator? and is that a stock alternator?
and is that a water pressure gauge, and whats the other gauge?

You can actually see the alternator mounting bolt in the pic. The bolt at 12 o'clock is long. There is a spacer between the alternator and the block. There is a tapped (3/8-16) hole in the block right there.

Here ya go....





That is a water pressure gauge, the other is fuel pressure.

[OldSleekOlds]

The difference between stock and "marine" starters and alternators is that all openings on a marine unit are either sealed closed or have a fine brass screen covering so that air can pass but fumes cannot ignite