Ok the info I have on the boat...<br /> merc 2.5 1988 renkin with 3.0 carb motot rebuilt by previous owner<br /><br />Compression<br />2 end cylinders are at 150<br />2 center cylinders are at 120-125<br />He also said that there is lots of blow by, and the problem could be a head<br />gasket...however, you dont know until it is taken apart. The problem could<br />be more serious, such as a complete rebuild.<br /> <br />Timing<br />Menhanic it reset 8 degrees<br /> <br />He wasnt sure on the condensor in the dist and he did not do a recheck once<br />he reset the timing so im not sure. He did suggest to switch to electronic<br />ignition distributor....check the cost<br /> <br />He recommended for the drop in compression to use 4 cylinder engine restore.<br />it goes with the oil and is supposed to seal any gouges in the cylinder<br />wall. what do you think about the sealant option??<br /> <br />I am hoping to get a 15deg prop to check it out as well to get some more<br />performance/torque<br /> <br />when running the boat on water rpms at wot were 4000 with 2 in the boat and only 3500 with 5 adutlts. <br /><br />any suggestions