Water jacket on 1987Johnson 88hp SPL

[special88]

How involved is it to change the water jacket on a cylinder? And how whould you go about it?

 

[Dhadley]

Re: Water jacket on 1987Johnson 88hp SPL

You mean the water jacket gasket on the cylinder head of the cover gasket on the exhaust chamber?

 

[special88]

Re: Water jacket on 1987Johnson 88hp SPL

EIther one I am not sure what I need but there is water coming out around the spark plug in one cylinder and the advice I received before said I made need to change the water jacket or possible the head gasket.

 

[ob]

Re: Water jacket on 1987Johnson 88hp SPL

Sounds like a head cover gasket is in need of changing.The jackets themselves just FYI are integrated into the engine block and serve to channel the cooling water.

 

[Dhadley]

Re: Water jacket on 1987Johnson 88hp SPL

The water cover plate and gasket on each head is a plate simply bolted over the head covering the water passage. If none (big if, huh?) of the bolts break it should be a real simple task. You dont have to pull the heads but it bay be simpler in the long run. <br /><br />If you do pull the heads, be sure to replace the water deflectors (small pieces of hose -- 2 on each side) along with the head gaskets. <br /><br />Good luck!