What is this?

[89retta]

Hi guys need some help. I have an 04 Caravelle 187. It has a 4.3 gxi-e with an sx-m 1.79. Just noticed on the underside of the cavitation plate there is a rectangular opening. What is this for or am I missing a cover off it. Tried to find a pic of an outdrive with same opening but couldn't. Thanks for any help

 

[Fun Times]

Hi there, any chance of posting a photo of the area in question?

http://www.bing.com/images/search?q=volvo+penta+sx-m+sterndrive&FORM=HDRSC2

 

[89retta]

I keep the boat at the lake so I will take a pic of it this weekend.

 

[89retta]

No Title

Found a pic of what I'm talking about. The opening is just above cavitation plate there is one on both sides. Its the small rectangular opening.

 

[skydiveD30571]

If I remember correctly from older threads, that opening is by design and you are not missing anything.

 

[89retta]

What does it do? Is it for the exhaust? thanks for the reply

 

[Tail_Gunner]

What does it do? Is it for the exhaust? thanks for the reply

Yes its a exhaust port as is the prop and the transom water outlet.Notice the three outlets or sources on smoke.

 

[89retta]

Thanks for the info. Can I block them off to make the boat more quite at cruising speed?