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Can I use this Cylinder Head 4 Tec ?

waternewbie

New Member
Messages
6
Water Crafts
2005 Sea Doo RXT SC 215
2004 Sea Doo GTX SC 185
20200109_193558.jpg

2003 Sea Doo GTX 4Tec 185

Not sure what caused this pitting, we ground down the rough edges. Can this be used like this?
 

ski-d00

Well-Known Member
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2,402
Location
St. Marys, Ohio
Water Crafts
2012 RXPX
2012 GTR 215
2006 3D DI
2008 Challenger 230 430HP
When dealing with combustion chambers, you should only remove as much material as necessary because you just lowered your compression by grinding and polishing all the aluminum away. A rough surface there won't hurt anything but lower compression will. Luckily, the 4tec motors are very forgiving when it comes to compression so as long as the valves are good and sealing fine, that head will still be fine. I would have a machine shop check it for flatness and make sure you didn't grind into any of the flat sealing surface.

Hard to tell what caused the pitting at this point since it's all ground out but I would guess corrosion.
 

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