Evinrude 1987 140 v4 Rebuild

[Skools Out]

decked means where the heads bolt on have the block and cylinders cut down to get a better surface for the head gaskets to seal too. with your heads shaved it will run hot and plus eat starters due to raised compression. may be really hard to start when motor is warm due to the starter may not be able to turn over the motor. they do make a cylinder repair ring where you cut down the out block casting on the cylinder sleeves and you insert these rings so that your head gaskets will seal correctly. but you need new or good used heads. sell those to some poor other boater with low compression worn motor.

[nymack66]

Originally Posted by Skools Out

decked means where the heads bolt on have the block and cylinders cut down to get a better surface for the head gaskets to seal too. with your heads shaved it will run hot and plus eat starters due to raised compression. may be really hard to start when motor is warm due to the starter may not be able to turn over the motor. they do make a cylinder repair ring where you cut down the out block casting on the cylinder sleeves and you insert these rings so that your head gaskets will seal correctly. but you need new or good used heads. sell those to some poor other boater with low compression worn motor.

Thanks for the explanation, I do have two heads not shaved so I will use those and sell the shaved ones, in regards to the rings you mentioned do you know where I can find it ? This is the only part that have me nervous and both you and Ferm the pros jumped on it I love it ..You Guys do know your stuff thanks for all the help. There is a Guy with 2 nice clean power heads both big bore bummer since I do NOT have parts for a big bore ..

[THEFERMANATOR]

That pitting around the sleeves on #1 and #3 can cause head gaskets to blow out like no tommorrow. When I say decked I prefer the method where they use the big sheet of sandpaper on a granite top. This way you only take off what is needed, most of the time it's less than .002 thousandths to clean one up this way. And the V-4 loopers have REALLY high compression to begin with, roughly 140-145 on a good healthy one. Mine pops off at 155 and it is a B!TCH to start up, it takes 2 good batteries to kick it over with 2 guage battery cables. But it will SCREAM on the top end. Like I said earlier though, the carbs will drive you nuts most likely. Most everybody I've talked to has had problems after building one of these V-4 loopers and had to re-jet the carbs to fatten em up on the main and intermediate, but lean it out at idle.