Does my new Farmall 400 have a blown head gasket??

07-30-2023

[@elroyelblander6277]

Thing's happen as machine's, vehicle's, engines age, don't they... whether theyve been wrenched on before or not... you'll get it running good.. have a good week 👍👍👊

[@AndyFromm]

Seems like these have all been worked on a few times by now. Have a good one, thanks 👍

[@kevind3185]

I let them idle for a good 10 minutes after working them before shutting down. My 450 makes the exhaust stack glow with a 4" flame out the top. You only see it in the dark when working it hard. If you hear a tic as it cools that noise are cracks forming as the iron contracts faster in some areas then others.

[@AndyFromm]

My 806 diesel will blow a flame when working it too. You wanna really hear heat creaking, drive a harley and shut it down 😆

[@evankibbe590]

Definitely a blown head gasket 😮😊

[@donvoll2580]

Good day Andy Boy it started. Yrs ago neighbour went around cutting silage into silo. had 400 diesel , something wrong. water was getting inoil I think. They put in 318 chyrsler motor then. Good luck .I had allis b bought for 25 $ went to change oil a little water come out. Used it for yrs that way. Thanks

[@AndyFromm]

Good day Don. I think those old ih diesel were pretty known for cracking heads. This tractor maybe getting an engine swap but I also would like to save the engine since its loose 👍

[@rhekman]

I think letter series Farmalls only had head studs torqued to something like 80 ft-lbs. That being said, a cordless impact being able to remove them easily sounds sus.

[@AndyFromm]

From what I can find m-450 is about 110ft/lbs. I started with the breaker bar but it seemed easy so I tried the little dewalt impact driver and it took them off. I think that thing is 1/4? Has the changeable bits.

[@deercreekmechanical]

Hopefully it’s just a head gasket. My SMTA had 4 massive cracks in #3 cylinder.

[@AndyFromm]

That sucks! I think I'm going to have a shop check it. If it's bad, I have a few more 🤞

[@deercreekmechanical]

@@AndyFromm I’ll hope that it’s not. I don’t have any spares laying around and people are very proud of the parts they have. Finally got what I think is a decent deal from JP tractor in Missouri. He sends all his to a machine shop to get them checked out and completely gone through so you just have to put it on the block for $900 shipped…..

[@AndyFromm]

@@deercreekmechanical thats too much for me

[@deercreekmechanical]

@@AndyFromm its too much for me too, but it’s the cheapest I could find. Other places were almost that much as pulled no work and no guarantee.

[@AndyFromm]

@@deercreekmechanical thats nuts. I have 3 400 and 2 M engines, I hope I can make a couple runners out of them. Would be nice to have a couple that are stockish 😄

[@richardpelzer3797]

Crack head under the exhaust valve