I have a 1978 crusader mini day.
I have a basicly stock chevy 2 bolt main 454. has airgap intake hardin headers and a demon 800 carb.
anyway i have had the boat on the water for 3 years and i have blown up three motors.
i have used the same engine builder every time. so i think that is going to stop.
but before i spend more money on a new motor i am wondering if my boat could be causing this.
the motor is 3 pointed in the boat. has a panther jet so the bell housing clamps right to the pump and i put a bbc mount plate on the front.
I want to know if there isany way my boat is damaging the motors.
the first time i spun the bearings out of the motor cant remember what happend the second time and this time i found the cam broken in half and pieces of piston in my oil pan.
two weeks ago i took the boat to mead and it ran great. i did not notice any noise when putting it onthe trailer. i brought it home and the next time i tried to start it in the back yard. i heard a clucnk and the motor stoped. i thought the starter was stuck. but after digging into the motor i found it was blown up pretty good.
any insight would be helpfull. i can supply pics if you need them. thanks
ALWAYS use a 40+ strait weight oil with a bottle of zink additive if using automotive oil!!! personally i use 20/50 mobile delvac fleet oil its cheep and TWICE as good as ANY automotive oil on the market and the 2hp you will loose pumping that thick oil will be worth it in the long run! just my 0.02
i have always had the builder break thecam in. we use rotella. i said cheep stuff cause it is a lot cheeper than the syn stuff i run once the motor is broken in.
i will check the alignment beforethe new motor goes in. but like i said it is a three point set up so getting it wrong is kind of hard. the bell housing clamps right tothe pump.
Actually you can still get it off align. Granted the bellhousing clamps around the pump but where the 2 front mounts attach can be too high or low. So put a digital level on the pump and on the motor and see if they are close.