Newly Rebuilt Tractor Overheating

[Coyote machine]

We are having a friendly conversation is that ok with you?

Didn't know my permission was needed to carry on this friendly conversation, but for purposes of keeping it 'friendly' by all means carry on. Permission granted.
It may be plenty friendly, for the most part but not very constructive. I've seen everything under the sun thrown out as possible causes, from cracked blocks to bad caps, radiators, water pumps, head gaskets, hoses, foreign objects, etc.
Logic would dictate to those who actually work on engines that bubbles in the overflow tank are MOST likely related to exhaust gases escaping from an improperly sealed head to block and caused by the gasket between them not doing it's job for any number of reasons. The fact that anti-sieze was used would lead me again toward what was done last- assembly of head to block and torquing of head bolts. Thus, checking actual torque tightness of the bolts after running the engine a few times through it's paces would reveal exactly what was revealed- loose bolts. Tighten bolts and run her again. Problem solved- case closed. Little wild-a$@ed guessing and a lot of time and energy saved.

As far as anti-seize, it's great stuff and I use it all the time. It may be specked for use on Navy vessels which are in a particularly corrosive environment all the time but most tractors aren't subjected to constant salt air and such, and therefore preclude the need for such extra measures. And as Dirtdonkey said torque specs could be reduced with it's use - which in this particular situation led directly to the problem and solution to same. Retorque till spec is reached and engine checks out as running properly- part of normal rebuild breakin proceedure.:hypnodisk:eace:

 

[dirtdonkey]

From my experience with the first gasket, that I had to replace, the gasket material actually melts onto the head when it gets hot. I should have thought about that when I noticed the blowby that was the only thing that made sense as to where the heat was coming from. I'm just hoping that I didn't blow too much material away from the gasket and still have small leakage? Takes me back to my original statement that I wish I had the factory METAL gasket that Yanmar used on the assembly when it was new. I don't think I would have had this problem. Lesson learned and hopefully I'll never have to go through it again. Again thanks for everyone's input and help.

 

[clemsonfor]

But AAron at Hoye says he has some OE yanmar gaskets still in yanmar packaging that have fiber in them? Not saying yur original was not metal but there could of been a redesign by yanmar itself in the last 30 YEARS!

 

[dirtdonkey]

Absolutely, I have very little knowledge about Yanmar or any other tractor for that matter. All I knew was what I took off and what they sent me and it was so completely different I just didn't see how it would work, but then again there are always new ideas and new processes. Unfortunately my tractor overheated after I rebuilt it and it must have been leaking at the head gasket. I put on a second one, following the manual instructions. There were no instructions that came with the head gasket so I didn't realize I'd done something wrong. Clearly you need to install the head gasket. Run the motor at low speed until you get it up to a good temperature all over, shut it off and then re-torque the head back down to make sure everything seals. Like I said I'm at 135 lbs torque right now, I checked with an arm type torque wrench and a new click type that I just purchased. Both indicated I was at the correct torque and given I've used Nickle Anti-seize it should be about 10-12% higher than that so I should have plenty of torque. If anyone is aware of something I'm doing wrong or if I should be torquing higher please let me know but I'm going with factory specs for now. Having the head shaved would have raised the compression slightly so maybe it needs to be torqued higher, I just don't know.

 

[Car Doc]

Didn't know my permission was needed to carry on this friendly conversation, but for purposes of keeping it 'friendly' by all means carry on. Permission granted.

Its not that was the point.

We are all doing the best we can to help these folks with the info that's presented like we always do. You are welcome to your opinions same as all of us. So dont criticize the content of this discussion as "everything under the sun" they are all someones opinion given in good faith take them or leave them.

So if you dont like it just dont participate in the discussion or find a way to be constructive yourself and be respectful of others ideas. Don't go away mad just go away if you dont like it. :thumbsup:

Sorry to jack your thread Dirtdonkey I sure didn't plan on it. I look forward to hearing its running like it should.

 

[clemsonfor]

Just throw this in there, things are not always as they seem. Sometimes these wild guesses of things it could be turn out to what it actually is. Most folks said HG but other ideas were thrown out for the overheat issue which did not turn out to be overheating at all but just combustion gasses. Look back at 80% of any tbn trouble post threads and you will see the same pattern.

 

[kenmac]

I would have never guessed head gasket after you re- built the engine and installed new gaskets. Things are sometimes hard to diagnose from behind a computer screen. Good luck .I hope you've solved your problems

 

[Coyote machine]

Its not that was the point.

We are all doing the best we can to help these folks with the info that's presented like we always do. You are welcome to your opinions same as all of us. So dont criticize the content of this discussion as "everything under the sun" they are all someones opinion given in good faith take them or leave them.

So if you dont like it just dont participate in the discussion or find a way to be constructive yourself and be respectful of others ideas. Don't go away mad just go away if you dont like it. :thumbsup:

Sorry to jack your thread Dirtdonkey I sure didn't plan on it. I look forward to hearing its running like it should.

Really, my permission is NOT necessary?! Seems you like to tell others what to do and when and how. Take your own advice and try contributing something useful, if possible or move over for those who might be able to actually diagnose a problem, without encompassing everything under the sun as a possible solution. Just because half this thread is people's opinions doesn't make them relevant to the solution, nor do I need to take them or leave them.
Sorry if telling it like it actually is is too much for YOU to handle.
All I've said is totally relevant to the fix for this problem- as a result of professional knowledge gained from years of successful engine repair. Also take your own advice and go away, sooner than later. Your lame apology for hijacking this thread doesn't cut it.

To the OP, you're worrying un-necessarily. Drive the tractor and forget about the gasket for now. Retorque after some hours on it. It ought to be good going forward regardless of what it's made of. I would NOT torque it any tighter right now, you could take what's good and crush it too far.

 

[Car Doc]

Name one instance where I tell someone to do something when and how? And that starts off your diatribe off on the wrong foot from the get go speaks volumes.

Far as what I contribute that is for the individual and the group to decide for themselves remember you get what you paid for. I also happen to own a Yanmar that's the same chassis and basic engine as his and have experience working on this engine do you?

I dont recall you ever being in on the Yanmar group discussions before either as far as offering help before? Makes no difference just goes to show how little you actually know about me or what we talk about.

I have been doing this type work a long time nothing I have to say is a wag its all been earned and offered up as free advice when I can. So like I said take it or leave it and I really really really mean it! As far as an apology goes I was apologizing as much for you as anyone what you think about it is irrelevant I did my part its you that owes one now.

I am man enough to own up to wasting space arguing with you on the forum over your insistence that you would have the tractor fixed if only someone would just listen to you.

Fact I am big enough to walk away and let it be what it is a stupid waste of space and effort. Also as far as what you think about me it is apparently way more important to you than me so read something into that.

 

[Coyote machine]

Name one instance where I tell someone to do something when and how? And that starts off your diatribe off on the wrong foot from the get go speaks volumes. Blah, Blah..

Far as what I contribute that is for the individual and the group to decide for themselves remember you get what you paid for. I also happen to own a Yanmar that's the same chassis and basic engine as his and have experience working on this engine do you? Blah, Blah, Blah...

I dont recall you ever being in on the Yanmar group discussions before either as far as offering help before? Makes no difference just goes to show how little you actually know about me or what we talk about.

I have been doing this type work a long time nothing I have to say is a wag its all been earned and offered up as free advice when I can. So like I said take it or leave it and I really really really mean it! As far as an apology goes I was apologizing as much for you as anyone what you think about it is irrelevant I did my part its you that owes one now. Blah, Blah, blah, blah.

I am man enough to own up to wasting space arguing with you on the forum over your insistence that you would have the tractor fixed if only someone would just listen to you. Blah....

Fact I am big enough to walk away and let it be what it is a stupid waste of space and effort. Also as far as what you think about me it is apparently way more important to you than me so read something into that.
Blah, blah....

Take a dozen: :chillpill::chillpill::chillpill: Rewind your:cuckooclock::cuckooclock:
This is like a bad: :comedy:
Look into the: :hypnodisk: and count down from ten until u disappear.