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Head gasket

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JD-G

03-11-2003 07:27:35




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This question has probably been asked but I'll ask it again. Before installing the head gasket on my G, is it better to soak the new head gasket in oil for about 5 minutes before installing it or is it better to just use copper coat and not oil?




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JD-G

03-11-2003 10:39:09




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 Re: head gasket in reply to JD-G, 03-11-2003 07:27:35  
Thanks for all of the information guys. I ordered this gasket from John Deere. It looks like I will not be using oil on the gasket for this application.



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2 cylinder

03-11-2003 10:27:34




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 Re: head gasket in reply to JD-G, 03-11-2003 07:27:35  
Do NOT soak it in oil period! That is an out dated instruction. Use a very tacky aviation type gasket dressing, or ask your local mechanic what's best to use. Our JD mechanic said they have not soaked them in oil for years. I found this out the hard way after I soaked my G head gasket in oil then assembled it, Broke the motor in for several hours, and when we dynoed the tractor it promptly blew the head gasket before we put much of a load on the motor. Just my experience with soaking 2 cylinder head gaskets.

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Clooney

03-11-2003 10:15:30




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 Re: head gasket in reply to JD-G, 03-11-2003 07:27:35  
JD-G, a lot depends on the gasket type used, if it's a non-metallic type you definitely don't want to use oil on it. ~I use #3 Permatex on both sides of the head gasket but not on the fire rings around the cylinders. Probably Copper Coat or other gasket spray would work good also, but those spray type gasket sealers are hard to keep off the fire rings.
~One thing to keep in mind when using any type of gasket sealant is it demands a mandatory head nut re-torque after a few heating & cooling cycles.
~When torquing those head nuts start in the center & work your way to the ends increasing the torque value by 10# on every pass. Don't forget to use new lead washers under the head nuts & clean the lead pieces from the head after torquing.

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Donny-B

03-12-2003 14:12:27




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 Re: Re: head gasket in reply to Clooney, 03-11-2003 10:15:30  
Clooney,
What is the reason not to get sealer on the "fire ring" of the head gasket? Also would you recommend re-torqueing more then one time?



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Donny-B

03-11-2003 16:13:09




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 Re: Re: head gasket in reply to Clooney, 03-11-2003 10:15:30  
Clooney, What is the reason not to get sealer on the "fire ring" of the head gasket? Also would you recommend re-torqueing more then one time?



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John T

03-11-2003 09:16:15




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 Re: head gasket in reply to JD-G, 03-11-2003 07:27:35  
Mornin G Guy, Well, this is one of those questions you will get as many opinions on as there are posters lol, several different thigns seem to work well for different people, and most appear to be good ideas. Ive not had any leaks where the block and head were cleannnnn nn and I only used a light coat of K & W copper kote (no oil), and some here report good luck using permatex, some use just oil, etc. etc. etc. If I were going to use oil, then I doubt if I would try to add kopper kote. The thing I recommend is to torque slowwwww www in not over 10 lb increments at a time (each in sequential pattern) startign once you to get to 50 lbs or so, then after a good warm up, re torque. Have the studs and nuts clean and wire brushed and free of any old lead. Best Wishes n God Bless the USA Ol John T Nordhoff in Indiana

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BJ

03-11-2003 08:38:29




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 Re: head gasket in reply to JD-G, 03-11-2003 07:27:35  
I always had good luck using the spray on copper coat and make sure to oil the lead washers and threads on the studs



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