Conversion From OMC to Mercruiser Manifolds

[boatgrunt]

Hi - I'm one day away from ordering a set of manifolds and risers to convert from my 89 OMC batwing to Mercruiser manifolds. <br /><br />The new manifold and riser are part number 4584797415 and 4584797499 (I can't figure out how to upload pics to this post). <br /> <br />...and here are the old ones (top picture):<br /><br /> http://www.marineparts.com/partspages/OMC/omc5.htm <br /><br />Anyone see any reason as to why this wouldn't work or wouldn't work well? The exhaust port and stud pattern is the same. <br /><br />Thanks

 

[Lou C]

Re: Conversion From OMC to Mercruiser Manifolds

The issue is not the stud pattern but the distance and angle of the end of the riser from the Y pipe. There is a place in Washington State that is selling a ready made kit to do this, it is not cheap but has everything you need from what they told me. <br />www.sea-way.com<br />give them a call they know how to make this work.

 

[KaGee]

Re: Conversion From OMC to Mercruiser Manifolds

GLM should have the replacements now. Go look at their catalog.<br /><br /> http://www.glmmarine.com/manifolds/