Car Care Nut head gasket warning

Given that my truck has a lifetime engine warranty on it (unlimited miles/unlimited time), I'm not too worried about it. That said, given it's my DD, and I plan on keeping it for a LONG time to come, and given my truck is right at 70K, it's about time to think about doing it anyways, so I plan on rolling it in with other fluid replacements (transfer case and the like).

 

Once every 5 to 6 years isn't so bad for some insurance. That is, if I keep it that long. Every time I think this is the one, another shiny new thing deal will come along.

 

Luckily for me I live in Florida and don't own a boat. Did my time in the rust belt as a child through my 20s. Never again.

 

Just place them in your mouth and let them slowly dissolve until the tablet is small enough to pass through the radiator neck.

 

Looking at pictures in this ih8mud thread: https://forum.ih8mud.com/threads/3ur-fe-rebuild-head-gasket-failure.1322078/ I think what I see is a cast iron sleeve separating from the aluminum. This happens because cast iron and aluminum have different thermal expansion rates. When locally overheating, the sleeve has no place to go but push up. Unfortunately the pics a not good enough to see if there are corresponding marks on the head.

 

A good observation here. However, the iron sleeve stops about 4 - 5 mm below the top of the deck, so it may be difficult to say exactly what that mark is. The sleeve is very well integrated into the aluminum casting, but that doesn’t mean an overheat/hot spot won’t damage things. If the liner were to tear away, which should be very difficult, the problem will reoccur, as no gasket will fix such an issue. The mark is certainly in the proper spot on the hot side of the cylinder.

 

This is a smart design by Toyota.

Yeah, the problem reoccurs in Volvo engines, and selected Ford ones, who inferred that design choice from Volvo. They cut a slot between cylinders for thermal expansion, that adds a weak point, which eventually fail. Engine tuners often put a shim into that slot to mitigate the issue, but then the head gets lifted in high power applications. I certainly found imprints on my cylinder head where cast iron sleeve was pushing the gasket's fire ring up.

 

I misposted another observation into another head gasket thread. Duplicating here.

Another good illustration. This is my engine head partially skimmed. See dark depressions between water channels and fire ring?



Same must be happening with 3UR. Also see cylinder sleeve imprint into the head. It was lifting it up and would eventually cause a head gasket failure.

I vaguely remember that Tom Gilles wrote in his book about aluminum crushing inside itself in cylinder head in these spots, but I forgot what was the explanation, and someone took my book and never returned. Spot between water channel and fire ring is certainly a weak point in any engine.

 

I dated a gal that had that going on below decks.

 

Do you date gals with blown gasket?

 

Nope. They leave that way.


lol!!

 

This was back in the early 90's so hold on: On a '85 GMC Jimmy 2.8L with maybe 100k miles, I had a leaky water pump and changed it out. There was a front cover that needed to be sealed with anaerobic sealant. After the fix water got into the oil and I thought it was the sealant. I changed this 3 times. I was finally able to deduct it was a head gasket which didn't show up until the new water pump, more flow and pressure I assume. After I pulled the heads one of them was definitely leaking. I have been leery of the effects of a new water pump ever since. I don't think I ever had another one do this though but these were cast iron heads and block.

 

Is this a specific dealer warranty and you need to service it with them?
Myself never heard of such a thing.
I can't see 2024 Toyota dealers offering this type of warranty any more on a Tundra.

 

CCN sure opened a can of worms ... starting to get News Break articles on " Toyota V8 engine problem "

 

Oh, no! Close the thread for gen2 haters! =)

 

This video was posted over on the 3rd gen forum also. To me, it's a clickbait video. We all know he has 1.2 million subs and makes money off his videos. What better way to make money than to put a BS title on the vides. As you can see its been posted here twice and I saw it on Reddit also. And the way he holds his head down in the video cover is pure genius. The video has been seen over 328k times, I wonder how many people are now worried because some guy that makes money with his videos told then that the V8 is pretty much garbage. I have seen some of his videos and while he is a very good mechanic, he's does the videos for the wrong reasons.

 

I stopped watching that video at 1:43. He still was doing introductory shit talk. Zero information.

 

The video caught my eye when I was on Reddit and I saved it for later. Obviously I have a V8 and always looking to prevent issues. He obviously has diarrhea of the mouth but like I said he knows he's stuff. I started the video and yes once again the diarrhea, so I fast forward. Then I get to the part that makes it obvious it clickbait, he starts holding up various gaskets form other engines, same problem. So it's not a V8 problem, it's an antifreeze problem. Forward to the end and then he finally says it, change your antifreeze sooner.

 

And unlikely this is the root cause of gasket blowing at the same spot in many engines.

But change it sooner, yes.

 

Well, they’ve been building these things since the 07 model year. Show me the mountain of HG failures from the million plus UR engines out there. I think this would have emerged as a very common problem a while ago if it was happening at a rate of real concern.

 

We still need to calculate the percentage and calm ourselves with "Still better than Ford".

 

Never changed coolant in any vehicle I’ve owned even going up to 220k. Never a head gasket issue. Don’t over think this.

 

Take it apart, and you'll find limestone-like deposits inside cooling channels with lower flow, like around the cylinders. That costs you some considerable cooling efficiency.

Also coolant lubricates water pump. Old coolant does not lubricate it well.

 

Haven’t had to replace a water pump or thermostat and haven’t had overheating. Not saying it’s recommended but also not gonna panic over some youtool spouting stuff off.

 

The video helped remind me. It costs as much do it as a quarter tank of gas. I'm changing my 4Runner coolant with the next oil change because it is time and they have flaky water pumps. The part that pisses me off are these greedy private owners that own the actual Toyota dealerships. Anywhere near a larger town $32 a jug. Drive a little further 1/2 hr. $27 another half an hour $22. Cdn dollars.

 

You might try looking for Aisin ACT-002 coolant. Here in the US it is 1/2 the price as Toyota OEM a lot of times and I'd bet dollars to donuts it is the same thing and Toyota just rebrands it.

 

CCN is not a tool. This is just a video reminding people to do the preventative maintenance to mitigate issues. It is no secret that coolant needs to be replaced over time and mileage.

 

Thx
The Wrench Monkey sells Aisin for $24 plus shipping - $10.
That country Toyota dealer sells the Toyota brand jug for $22 - shipping is the wife on her way home. 8^)

 

Llama3.1: "why are youtube videos attempting to be 30 minutes or longer?"

There are several reasons why YouTube creators might be aiming for longer-form content, often exceeding 30 minutes:

1. Monetization : The YouTube Partner Program (YPP) has a minimum requirement of 1,000 subscribers and 4,000 watch hours in the past 12 months to monetize videos through ads. To meet this threshold, creators need to produce more substantial content that attracts more views and keeps viewers engaged for longer periods.
2. Audience engagement : As YouTube's algorithm prioritizes content that retains viewers' attention, creators are incentivized to produce longer-form content that resonates with their audience and encourages them to stay until the end. This can lead to higher viewer satisfaction, increased watch time, and better monetization opportunities.
3. Increased visibility : Longer videos often appear more prominently in YouTube's search results and recommendations, as they're considered more comprehensive and authoritative on a particular topic. By creating longer content, creators can increase their chances of being discovered by new audiences.
4. The rise of 'long-form' genres : Certain genres, such as documentary-style vlogs, educational content, or in-depth reviews, often benefit from longer formats. Creators are responding to audience demand for more detailed and immersive experiences within these niches.
5. Competition and differentiation : With the vast number of creators on YouTube, producing high-quality, engaging content that stands out from the competition is crucial. Longer videos can help differentiate a creator's brand and style, making it easier to attract and retain viewers.
6. The 'influencer' model : Some YouTubers have adopted the influencer model, where they focus on building relationships with their audience through more in-depth content, often featuring themselves or their personalities. Longer videos allow them to share more about their lives, interests, or expertise.
7. SEO and optimization : YouTube's algorithm favors videos that are optimized for specific keywords, topics, and formats. By creating longer, more detailed content, creators can improve their video's relevance and ranking on YouTube, making it easier for new viewers to find.

The dude is attempting to make money with a side stream. Can't blame him. Wrenching your whole life hurts. But yeah, it could've been summarized in <=5mins.

 

When he makes clickbait videos, yes he is. He literally could have said what he said in like 5-10. Instead he goes on this diarrhea of the mouth about how bad the V8 engine is. No it's not, it a maintenance issue not an engine issue. He makes money from these videos, I don't blame him, who doesn't want to make money. But don't be disingenuous and clickbait people to make money.