Leaking Head Gaskets 140 Looper 'Rude

[Hardcore]

so i bought a supposedly rebuilt 1993 evinrude 140 looper. i noticed that water was spraying out of the head gaskets and weeping out the bolt holes. so i pulled the heads and had them resurfaced and replaced the head gaskets and used OMC gasket sealant and properly torqued them. i also replaced the water pump and thermostats for good measure.

it was fine at first but now i again see salt deposits around the gaskets on both heads and all the bolt holes too! its not just one spot its everywhere. i dont get it.

the motor runs perfect but why cant i get it to seal? i followed the instructions to a Tee. could the block be warped? if so is there a way to resurface the block with it still intact?

 

[wilde1j]

Re: Leaking Head Gaskets 140 Looper 'Rude

Did you retorque after about 10 hours of runtime?

 

[ezeke]

Re: Leaking Head Gaskets 140 Looper 'Rude

First, the new gaskets should have a shiny surface, indicating that the sealer is already on them and that no additional sealer should be used.

Once the engine is run and the gaskets have seated, it's important to re-torque the head gasket bolts to the service specifications (240-264 inch pounds).

Debris tends to accumulate at the bottoms of the screw holes, so it is good practice to clean them out before replacing the screws so that the screws don't bottom out.

Unless you are very careful in repainting and keep using a water displacing treatment, it is difficult to prevent corrosion around the exposed metal, especially where the surfaces are contracting and expanding at different rates.

You may also want to review SB 2253, which deals with the orientation of all newer looper head gaskets.