Head Gasket Replacement

[rainman99]

I have a j115tlco 1985. After all my preventive maintenance. I torqued head bolts and did a decarb checked compression. Same as last year left side115/110 right side 125/123. Should I change head gasket on left side? Thanks for any advice.

 

[71Windsor]

Re: Head Gasket Replacement

Are you sure its a head gasket? A bad head gasket would show some other symptoms. The most common being over heating. What did you plugs look like? For compression loss with no over symptom and clean plugs I would say start thinking about a ring issue. And If I went as far as doing rings I would go ahead and check pistons and replace.

 

[tashasdaddy]

Re: Head Gasket Replacement

if you do rings, which i would not, with out trying a head gasket, first. you may as well just rebuild it. you will already have it apart. it is not unusual to have different readings per bank.

 

[rainman99]

Re: Head Gasket Replacement

Guess I will replace gasket and do a inspection. Iboat has the gasket #0318358. Can anyone tell me the part # for the gasket sealer?

 

[wilde1j]

Re: Head Gasket Replacement

Most head gaskets go on dry.

 

[gsyfishy]

Re: Head Gasket Replacement

Be carefull getting the head bolts off, take your time, as snapping one off will not be good.

 

[emdsapmgr]

Re: Head Gasket Replacement

The way OMC originally machined the blocks at the factory can cause a slight difference in compression between the two heads. A 5-8 lbs difference is not unusual between the two heads on some blocks. Yours is certainly more than that-try the head gasket.