80,s merc 225 drill out exhaust/boyessen,OR BOTH??

[mgerle]

I've been replacing parts for awhile on this unit, now considering boyessen reeds and an exhaust drill out for smoother run in all ranges.<br />I ran into an article for 150-175 hp that says drilling out is good, but for 225, unnecessary. <br />My exhaust is submerged often,low transom, usually under for a moment or two, then carbs load up.<br /><br />Q Will reeds work? Should i drill out exhaust? or both?<br />is it worth the dough?

 

[Dhadley]

Re: 80,s merc 225 drill out exhaust/boyessen,OR BOTH??

That motor should not load up at idle. I do like the Boyesen reeds but I dont think they will cure an ideling problem. <br /><br />To take full advantage of an open exhaust you may have have to dry stack the exhaust also. <br /><br />Good luck!

 

[KennyKenCan]

Re: 80,s merc 225 drill out exhaust/boyessen,OR BOTH??

Just a note here, if you drill out the exhaust, be aware that the noise level can become intolorable.<br /><br />I ended up closing the drill outs with bolts because I could not even think with noise that came out of my 135HP Merc.<br /><br />Had to wear ear plugs, which were annoying.<br /><br />Besides, I could not notice a difference in performance, it just seemed faster with all that noise.<br /><br />GPS said top speed was the same, 52MPH.

 

[FlyBoyMark]

Re: 80,s merc 225 drill out exhaust/boyessen,OR BOTH??

I'm using Boyesen reeds and they DO IMPROVE the idle, midrange and top end considerably...BUT the injection system or carbs MUST be adjusted properly.