1969 jetboat build thread. (5.3L)
#52
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Nice build man. My father has a 70' jetboat that I have been thinking about buying. Needs a little work in the seat department but overall pretty nice. It's got a 454 BBC but I was thinking of pulling that out and sticking a 5.3 with twins on it and keeping injection. You've inspired me a bit.
#53
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the pump has a hole on the face of where the impeller rides. it creates pressurized water that goes inside the boat. All jet pumps have it. I routed from that line to the engine. control the heat of the motor by adjusting a gate valve open or closed.
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#59
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guess I should update this and say that after changing to a 50cc pump shot and a little jetting with my timing at 31* I GPSed at 78.1
I also got aluminum tall valve covers and made a puke tank. I put about 100 hours on it this summer and only had a fuel pump problem. no motor problems whatsoever
![](http://i15.photobucket.com/albums/a376/00s-ten00/69%20schiada/213298f9.jpg)
I also got aluminum tall valve covers and made a puke tank. I put about 100 hours on it this summer and only had a fuel pump problem. no motor problems whatsoever
![](http://i15.photobucket.com/albums/a376/00s-ten00/69%20schiada/213298f9.jpg)
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