evinrude 15 or 9.9

[aalleexx]

Hi -<br />I have an 88 15hp evinrude, I've hear that the 9.9 and the 15 are the same...well..then<br />why would I get a 15 if I can get a 9.9 for a lower price?..what is the difference between the 9.9 and the 15.?

 

[OBJ]

Re: evinrude 15 or 9.9

Carb, exhaust tube, reed shims, extra cooling line for the exhaust......thinks thats about it cause I can't remember what year that OMC started putting the tuned exhaust and shims in both the 9.9 and 15....oh and the extra 5 horses.

 

[dajohnson53]

Re: evinrude 15 or 9.9

What is the same between the 9.9 and 15 is the basic powerhead, lower unit and therefore weight. What is different is that the 15 hp puts out around 50% more horsepower. I don't know exactly what is different, but similar to why various automobile engines of the same block size can put out different horsepowers.

 

[aalleexx]

Re: evinrude 15 or 9.9

do you know how they can accomplish something like this?<br />more horse power with the same engine block

 

[DJ]

Re: evinrude 15 or 9.9

Re-read OBJ's post above.