I have ask for help in the past about my 48 spl. This summer I finally put a tack to it and got 5300rpm WOT empty with only me with a 12.25X15 prop with LOTS of cup. I changed to a 12.25X 15 prop uncup. Got 5750 empty with just me. <br /><br />I also had the seals changed in the lower unit because it was leaking this last winter. I thought GREAT I got everything right now. BOY WAS I WRONG!!!!!!!!!!!<br /><br />So I ask the mech. to check the lynch and synch because there was a slight jump at WOT last trip out. This jump only seemed to happen about 1/2 the time. <br /><br />He came back and said the motor was WAAAAAY out of adjustment to just get it to run. The top carb was 2 turns out and the lower carb was over 4 turns out. THe skip sometime at WOT was caused by the fact that the spark advance arm was to floppy to hold adjustment and the carb linkage has to much play and this allows too much air to leak in the carbs. <br /><br />The mech ask if I had ever checked the compression. No, so we checked it and found 110 top 115 bottom. We decided to take it to his house and pull the head to see what kind of condition the cyl were in. Pulled head and the head gasket was shot. The cyl had a ring in the top that was probably .010 deep all around. THe pistons had a LOT of play. OH.....there was no thermostat in it either. <br /><br />We decided to replace the head gasket and put a thermostat in it. We are also going to get a new spark advance arm. Then we are going to get it running again. The reason for this decision is the fact it ran "fine" before (33.2mph and 5750RPM WOT). Also the lower unit reverse gear will pop out if it is not held in place. THe dog and gear are rounded over. We are really just putting a bandaid on cancer. <br /><br />I dont think it would be smart to rebuild the motor since it needs a new set of gears and new carbs along with the other worn out parts. I had $1100 bucks invested @4 years ago in the first place. From what I have gathered I seem to have purchased a worn out junker fron the dealer. Since the motor has always had issues. I just now took it to someone other than where I purchased it, and got the truth. <br /><br />thanks for letting me complain........
<br /><br />What are some of your opinions on this? <br /><br />thanks<br />longshot