BN Farmall head gasket

Dave F. 54 · Jan 26, 2019

Thinking about buying an bn Farmall, Haven't seen the tractor yet. Owner says the head gasket is leaking oil? Is this possible I have seen them leak antifreeze but not oil. If I get this tractor is it a big job to change this gasket I have changed head gaskets on flat head engines before. Thanks Dave F.

gene bender · Jan 27, 2019

easy to do and yes they can leak oil

Bob · Jan 27, 2019

It's worth a try to warm it up and re-torque the head nuts.

Afterwards, check valve clearances and adjust as needed.

showcrop · Jan 27, 2019

Last I knew a BN was kind of rare.

C.Amick · Jan 27, 2019

Not a hard job. Might want to clean it up and check the valves while you have it off. A friend of mine would turn the head upside down and pour a little gasoline around the seated valves to check the condition. If they leaded gasoline, he would work on polishing the valves and seats using grinding compound.

Rex Simpkins · Jan 28, 2019

Easy to do but just a word of advise use and Case IH head gasket or Felpro 7732 and use spray copper sealer. Don't know how many 113,123,135,147,153's I have done but I do know the ones I had trouble with leaking were head gaskets other that the ones I listed.

BN Farmall head gasket

Dave F. 54

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gene bender

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Bob

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showcrop

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C.Amick

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Rex Simpkins

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