Evinrude 140 HELP!!

[tomboy]

How Do you change/clean the main jets in a 1984 140 crossflow??<br /><br />Also soes anyone have experience with boyesen reed valves? The motor runs ok but it seems a little lacking in low end tourque, (ie pulling out a skier) the prop is correct to give me 5300 rpm wide open, but it just seems to lack good low end "grunt"<br /><br />another question,, Can you shave the heads to increase the Compression Ratio?? if so,, does anyone know how much??<br /><br />Thanks for all the great help!!<br /><br />T

 

[Dhadley]

Re: Evinrude 140 HELP!!

At a top rpm of only 5300 you will be low on "grunt". Especially if you try to drag a skiier. <br /><br />Work with your set up to gain top rpm (raise the motor). You still may have to switch to a smaller prop to ski.<br /><br />The Boyesens are great. You'll love 'em.<br /><br />Start with a de-carbon treatment. Lugging the motor like that will cause a rapid build up of carbon on the pistons and stick a ring(s). You target rpm is 5800 with an average load.<br /><br />Good luck!