2006 volvo penta 5.7 rebuild help

[wellcraftpower]

So i was hoping to get some use out of my boat without rebuilding the motor with 700 hours as one of the guys talking me out of it on this web sight. 2006 chaparral 256 ssi. salt boat from florida. Anyway now i am forced to fix the motor as i have 30 psi in 2 cylinders and 80 in all the others. don't know how the boat can run so good with these numbers ., Just won't idle or start for ****. . anyway motor getting pulled next week . going to rebuild it myself. We have a good machine shop . I want to polish crank ,I hope.. bore and do pistons only re-use cam and rollers. rebuild vortec heads. I see kits all over for this what should i do or not do. want imput on the things i just said. should i buy all new. I'm in the process of building a 540 blower motor right now for a car so not made of money,

 

[ESGWheel]

Giving your money constrains and experience my suggestion is let the teardown be your guide. Develop your minimal basic plan on the inspection after teardown. And if still have some bucks to spare start adding in elements a la carte where the menu items are listed in priority order of need with expected cost of that menu item. That seems the most logical to me anyway….