'73 Johnson 6hp Head Gasket

[1kruzer1]

On my 1973 Johnson 6hp I'm installing the cylinder head and new head gasket.
The head gasket is the latest BRP part number 0329103. What should I use for a sealant on the gasket? I've "heard" that some new gaskets require no sealant, but I'm not buying that for a head gasket. What sealant should I be using for this? Also, if anyone happens to know the torque specs for the head bolts I would be very grateful. (You are correct, I don't have a service manual for this particular model.)
Thanks very much for sharing your experience and expertise!

 

[boobie]

If the head gasket says " use no sealer " don't use any. If it doesn't, use OMC gasket sealing compound or Permatex # 3. Torque is 144-168 inch pds.

 

[racerone]

Torque is 60 / 80 inch lbs.

 

[F_R]

Confirming, some gaskets have pre-applied sealant and nothing should be added. And it's 60-80 inch pounds

 

[Willyclay]

Follow the proper sequence for tightening the head bolts. I have the factory service manual for that old beauty and will try to post the sequence later. Good luck!

 

[boobie]

Sorry about that. I read the wrong line on the torque specs.

 

[1kruzer1]

Follow the proper sequence for tightening the head bolts. I have the factory service manual for that old beauty and will try to post the sequence later. Good luck!

Thanks everyone for all of the replies! Much appreciated!
Willyclay, if you can find the 10 bolt torque sequence in your manual that would be the icing on the cake! I believe you start in the center and work your way out to the top and bottom edges tightening opposite bolts as you work your way out. Getting it straight from the service manual is always best, so I'll wait to see if you're able to post that information. Again, many thanks!

 

[racerone]

Your cylinder head is warped ( they all are ) so true it up on a piece of glass before installing it

 

[Willyclay]

I believe you start in the center and work your way out to the top and bottom edges tightening opposite bolts as you work your way out.

You are correct! Below is my best depiction of the sequence:

Upper cylinder, top row, L to R = 9 & 10
Upper cylinder, center row, L to R = 5 & 6
Row between cylinders, L to R = 1 & 2
Lower cylinder, center row, L to R = 4 & 3
Lower cylinder, bottom row, L to R = 8 & 7

NOTE: Re-torque cylinder head screws after running motor at normal operating temperature, and motor has cooled.

Do you also want the recommended break-in procedures for a motor that has been overhauled? If yes, please verify that your motor still has the original break-in period fuel/oil mixture ratio displayed inside the front cover.

 

[1kruzer1]

Willyclay, my apologies for my slow response. (Unfortunate death in the family, so I'm just getting back to this now.)

Love the way you wrote your depiction! I understand perfectly. Thanks so very much for taking the time to do that for me! Much appreciated!