Blown Head Gasket?

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Between the 17 threads on this 200 series head gasket issue, I feel nobody can say with complete confidence it is a coolant issue, especially when people like me with a mere 115k miles and a dealer receipt of my last coolant flush at 78K four years ago and light use followed all maintenance protocols. Yes, you should still do your preventative maintenance to be safe.

I fell down a rabbit hole on this (my wife thinks I am obsessing) since this happened to us recently. There are several things I have seen common in my reading of all these threads (and videos):

1) appears to more prevalent in pre 2015 years
2) lots of talk of cracked radiators (mine too was discovered), yet no overheating issues ever in my, and others, case.
3) lots of mention of valley pan gaskets leaking

Personally a coolant flush is wise, but it would be safer to conduct the occasional coolant pressure leak test. That "may" be the key here, I don't know. :frown:
🎯
 
P.S. A head gasket failure should be well investigated to find the cause. Head gaskets do not just blow up on these engines.There was a cause that should be found if you are going to rebuild the same engine.
Rebuilds on the 3ur-fe with its aluminum block are iffy. If the steel gasket was degraded by old acidic coolant and the engine never overheated, there’s a chance the block and cylinder head didn’t warp….problem is that you can’t machine the block….preventive maintenance is to do a coolant flush every 50k
 
I work more on the 100 series, than the 200.
A very common issues with both, as most all vehicle on the road. Is coolant systems. They're often under maintained.

#1 over looked:
Cooling, starts with the air flow through the radiator fins. If debris build up in fins. Not only is air flow restricted. Heat transfer from metal fins to air, is reduced by insulation of debris coating (dust, mud, grass, cotten, feathers, bugs, etc) metal fins. OM states to rinse the fins. How many do?

This results in engine running hot. We see this by reading Engine Coolant Temp (ECT) through, tech stream.

This is a DIY PM. It is not done bt dealerships or INDY shops!
 
Rebuilds on the 3ur-fe with its aluminum block are iffy. If the steel gasket was degraded by old acidic coolant and the engine never overheated, there’s a chance the block and cylinder head didn’t warp….problem is that you can’t machine the block….preventive maintenance is to do a coolant flush every 50k
should HG replacement be preventative every 100 k?
 
should HG replacement be preventative every 100 k?
I'm only now looking into the issue of 3UR. At this point, I would not recommend HG as a PM. Certainly not at 100K miles.

Have oil analyzed, is sounding like a very good idea.
 
I'm only now looking into the issue of 3UR. At this point, I would not recommend HG as a PM. Certainly not at 100K miles.

Have oil analyzed, is sounding like a very good idea.
I agree - Oil Analysis is the only practical way of proactively knowing when it might be time to dig into the HG.
 
I'm only now looking into the issue of 3UR. At this point, I would not recommend HG as a PM. Certainly not at 100K miles.

Have oil analyzed, is sounding like a very good idea.
thank you


what should be oil analysis intervals??
 
How often to have oil analized. Depend on history, miles, age and ones walet. For sure if noticing coolant loss, without leaks.. ASAP.


I've one in my driveway, with 216K miles 200 series. Coolant level looks okay.

The engine blew. Not sure what happen. Other than something blew out oil pan. Likely a connecting rod.

So I'm looking into what the issues are, in the 3UR. Are certain years, USA or Japanese built better or worst.

So the 200 series forum will likely be seeing more of me!

I've not yet decided, if I'll replace the engine, flip the whole vehicle as is or part out.
Engine is trashed:
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One thing I noticed is a lot of sand on under shields, along with pieces of oil pan.
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My GF would like to drive it, so wants me to restore it. She loves the look! A black Slee built Toyota Land Cruiser with Toyo's mounted on 17" Methods.
What's not to love!
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IMG_5272.JPEG

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IMG_5188.JPEG

IMG_5212.JPEG
 
thank you


what should be oil analysis intervals??
If you suspect you are loosing coolant and can't account for it from a known leak, then spend the $30 at your next oil change and get it analyzed. Given the relatively low cost of oil analysis, it might give you peace-of-mind to just get it done.
 
Re: oil analysis intervals

If you have mileage getting into the range that these are seemingly toasting head gaskets without cause, and haven't done oil analysis before, just do it. Simple enough.

How often to do it afterward is up to the owner. The million-dollar question is how quickly a HG can go south without other signs?

I personally wouldn't wait until noticeable coolant loss, if the vehicle has significant mileage. My understanding is oil analysis is sensitive enough to catch microscopic levels of coolant in the crank case.

I have my 220k oil change coming up in the next couple months.. will probably do it at that point. Depending on results my next one may not be til 250.. or maybe I'll do 235 and split the difference. Every oil change seems excessive, personally.
 
Re: oil analysis intervals

If you have mileage getting into the range that these are seemingly toasting head gaskets without cause
well i have 300k (almost) with stock hg

there are 3 people who lost hg at 88,107,123 k miles that posted recently
 
well i have 300k (almost) with stock hg

there are 3 people who lost hg at 88,107,123 k miles that posted recently
And tens of thousands of these didn't fail in that range.. yours being a great example.

I'm saying UOA can give owners peace of mind, but it's up to them when to start or how often to repeat. Recent posts suggest starting earlier than I'd recommend for most Toyotas isn't a terrible idea, given the relative ease of the process and low cost.
 
So the 200 series forum will likely be seeing more of me!

I hope we do! I recently converted to the 200 side and you've been a great asset for the 100 community.
 
How often to have oil analized. Depend on history, miles, age and ones walet. For sure if noticing coolant loss, without leaks.. ASAP.


I've one in my driveway, with 216K miles 200 series. Coolant level looks okay.

The engine blew. Not sure what happen. Other than something blew out oil pan. Likely a connecting rod.

So I'm looking into what the issues are, in the 3UR. Are certain years, USA or Japanese built better or worst.

So the 200 series forum will likely be seeing more of me!

I've not yet decided, if I'll replace the engine, flip the whole vehicle as is or part out.
Engine is trashed:
View attachment 3891564
One thing I noticed is a lot of sand on under shields, along with pieces of oil pan.
View attachment 3891567
View attachment 3891565

My GF would like to drive it, so wants me to restore it. She loves the look! A black Slee built Toyota Land Cruiser with Toyo's mounted on 17" Methods.
What's not to love!
View attachment 3891557
View attachment 3891560

View attachment 3891559
View attachment 3891570View attachment 3891561

View attachment 3891575
View attachment 3891578
Based on that build and the foreign material, looks like she forded quite a few rivers. Toyota changed the HG for 2014 and supposedly there are not any examples of head gaskets getting blown out by the coolant to get into the cylinder. Every example I’ve seen has happened on cylinder 7
 
Toyota changed the HG for 2014

What about it changed? The part numbers for the drivers side bank are consistent from 08-21, the passenger side only changes in 2017.
 
What about it changed? The part numbers for the drivers side bank are consistent from 08-21, the passenger side only changes in 2017.
I believe the part number changed from
11115-38020 to 11115-38021 for passenger after 2013. The drivers side stayed consistent with 11116-3801.
 
What about it changed? The part numbers for the drivers side bank are consistent from 08-21, the passenger side only changes in 2017.
I believe it was just Toyota’s updated specifications for improved durability and performance. Do not know any material or size differences though.
 

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