188 mercruiser exhaust

[dkc1211]

I have a 1973 Silverline Aruba with a 302 mercruiser thru hull exhaust. Does anyone know what exhaust I need to keep from pulling water back in? Does the height of the riser help or do I need a different elbow?

 

[Bt Doctur]

Re: 188 mercruiser exhaust

All done with the height of the riser. starts around page 41. you need 13 inches above the water fully loaded with passangers and fuel.
http://www.boatfix.com/merc/Install/gas/86419602.pdf