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Joe
Joe, Marine Mechanic
Category: Boat
Satisfied Customers: 7136
Experience:  ASE, electronics, Marine mechanical and electronics, pwc, wiring, all around repair tech,
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I am restoring an old vintage commercial clam boat

Customer Question

Hello , I am restoring an old vintage commercial clam boat with a single 555 cummins in it that I believe goes back to the early 1970's, which is in bad shape but I have found the same engine locally that looks good has good oil pressure and started right up on a pallet in a boat yard here locally . I am prepared to buy and install it but( A) became a little disheartened after researching the motors track record on the web , as it seems nobody seems to think it was a good engine at least in trucks and farm equipment . And (B )what problems do you think these engines had in general and /or in marine applications ? Any thoughts or guidance would be much appreciated Thanks Pat
Submitted: 1 year ago.
Category: Boat
Expert:  Joe replied 1 year ago.
Hello,
Thank you for allowing me to assist you, my name is ***** ***** I will be happy to assist you with your concern today.
It is hard to judge a motor by different applications as even though the motor is thought of in a way to be the same they are actually quite different. A marine application motor is going to be usually much better and strong because of the application that it is used in and while I do not have personal knowledge of the negative reviews of this model I can say that even if oil pressure is good what you want to do is visually inspect an engine which will tell you a lot about it. Something well taken care of will look as such visually. You would also want to preform a compression test and check for moisture and blowby as well as a leakdown test if would could be done. Honestly speaking, when an engine is out of the vessel it's best to just have it overhauled while it is out.
Thank you!
- Joe
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