260hp I/o expectations

[step up here]

Look for the serial number on the block Mecruiser has them on the right rear side of block. Providing its a merc.

[1224bret]

Wdlyle I agree it gets there pretty quick acceleration is great I guess I just expected more top speed. I don't run wide open very often but it's fun to get on it now and then. Pushing 40 isn't bad but 10mph faster would be nice. Either way I'm really happy with my v20!

[reelapeelin]

Originally Posted by 1224bret

Well from the few that have this set up sounds like I'm pretty close to where I should be. I think the engine that was swapped in was quite possibly a automotive engine. The reason I'm thinking of chain stretch is that I can't seem to get the timing right. It won't run right without the timing light showing around 29* advance at idle I still have to check and make sure the pointer and balancer match up at top dead center, probably my first weekend project. I tried to set it at 8* but it doesn't want to start with tht timing and at 8* initial I can only get 27mph top speed and forever to get on plane. I don't seem to have any detonation where it is now and I think I'm actually still somewhat retarded as far as what it sounds like now. I will do some more checking and try to get some fresh fuel in it this weekend. I just rebuilt the carb but I need a new secondary metering rod hanger since mine looks slightly bent. This thing has been a can of worms since I got it. Thanks for all the help and if anyone has more performance numbers with this set up I'd appreciate it seems like not many 260hp I/o's are out there. Thanks agian!

Spare...do they make the electronic (Petronix?) ignition for this motor...that might help him out some here...