Hey guy i just bought my first jet boat a 1979 Hawiian Bubble. Im a just a young car guy and don't know much about these so i may have questions along the way. The boat most recently had a ford 460 in it.
I picked up the boat from a friend of a friend for 1000$ no motor and only parts of the interior, however it had all the excessories and parts i needed, including a brand new marine grind comp cam and lifters. Also has a very nice hand made cover that fits it perfectly made to fit around the headers.
I got the boat back to my shop and of course started tearing into it. I started by taking the jet pump a berkley 12jc off,
I then began to tear it apart so that i could reseal the whole thing, and freshen it up a bit i used nothing but top of the line stainless fasteners and followed the manual to the T
In the process of tearing it apart I destroyed the reverser
I then began to paint the pump to match the rest of the boat
After a couple days of delay (school and work got the best of me) I got back to working on her and was able to fix the reverser
I also noticed that the screws holding my rear transom seal had washers on them and they were starting to damage the wood, so i build this plate to act as one big washer out of a sheet of stainless.
Now that my pump was painted and reinstalled i began searching online for an engine to build, and i was lucky enough to find a 1989 omc king cobra 460 fully dressed for 500$ spitting distance from my house. I picked the motor up and began to disassemble it
I was able to get my old man here for a day to help me disassemble the motor as he is much more knowledgable then me haha, the motor came out of a four winds and was advertised as stock, When we began to tear it apart it became evident that the motor was not a king cobra because it had no forged internals
I was however happily surprised to find out that the heads had been ported to gasket match and there was what appeared to be a crowler cam with aftermarket lifters and valve springs.
While i am waiting on my engine parts i ordered online the next step was to reinvent my motor mounts, The original ones appeared to be a home built style that were of very poor quality, something i know i don't want in my boat
While i was going to build new ones with the same design as the old my dad advised me to go a new route, so i decided to use the stock mounts out of the liberator. This is similar to something that would be in a old mopar engine, a shaft with a rubber bushing on either side of the motor mount
Thats where im at right now, i have two questions for you guys now, When dissasembling the engine we noticed that the lifters did not sit on the lobes of the cam evenly, there was probably only half the lifter on each lobe of the cam. There also seemed to be alot of thrust play. I want to know what you guys think of this? also is there some sort of adjustment on these big block fords? I also what to know what you guys think of my bearing cap? it was slightly broken on one of the edges so i took a file to it and cleaned it up, will this be satisfactory?
Any positive feedback is welcome and appreciated, also sorry if my format is good this is officially my first post on this forum
Thanks guys there will be more to come as i continue working on the boat!!!!