head gasket

[kbryant]

Hi everyone
Thank you for taking time to help us all out here.
I have 1994 120hp force outboard
Does anyone know what the torque specs are and the pattern or a video link for it. I am having trouble finding that out. Replacing my head gasket. It had a crack on cylinder 2
Thank you

 

[jerryjerry05]

The torque is 225in#. or 20ft#
I start at 14# then 18# and finish at 20#
​Google tightening sequence for cylinder head bolts force outboard motor

 

[kbryant]

Thank you for your reply and info.

Another problem. My 5 year old took 2 of my head bolts and now can't find them. Question-- can I buy them at local hardware store or do I need to special order them. If so anyone know where. Thank you again.

 

[Jiggz]

Sure you can just replaced them of the same size and of the same grade. The markings on the head should tell you what grade. If you have an Ace Hardware store, bring a sample bolt and they'll help you get the closes replacement.

As for the torque pattern, here's a similar one but the pattern should be same. Remember, you need to do at least a two step torque process, i.e. initially torque all bolts to about 150 inch lbs and then come back around to do all with a final torque of 225 inch lbs.

 

[Jiggz]

No Title

Here's a torque pattern.

 

[kbryant]

Thank you so much. Really can't thank everyone enough on this site. Have a good night

 

[kbryant]

Another rookie question
Should I be using gasket sealer when I install new gasket?
Thank you

 

[Jiggz]

No gasket sealant required. NOT RECOMMENDED AT ALL. Instead just make sure you thoroughly clean both mating surfaces and ensure the gasket is zero'ed in for fitment especially around the cylinder edges. This is especially critical if you are doing the work with the powerhead still in the vertical position.

 

[kbryant]

What do you recommend using to clean the surface?

 

[jerryjerry05]

Scotch brite or a 180- to 200g sandpaper.
​I also use a wire brush on a grinder.
Just don't put too much pressure as you can eat the aluminum.

The gaskets from the "good old days" were a much better fit and usually didn't need any sealer.

Since the motors been used and the corrosions been working.
The edges might not hold and need a bit of sealer.

My neighbors Yamaha had NEVER been flushed as it was on a lift in salt water without fresh water to flush.
The corrosion was so bad I had to use sillycone to make it seal.
Even then I had to redo the gasket 4 times to make it seal.