The Car Care Nut talks UR V8 blown head gaskets (5 Viewers)

[pvchaitanya]

So I’m the second owner of the 200 in the video. I sold it to the current (third) owner. It was originally a Georgia vehicle and I bought it here in Illinois in early 2020 because it was super clean and completely rust free.

I’m trying to remember the mileage when I bought it, but I think it was around 135-140k. At that time, it had an aftermarket radiator in it but I’m not sure when it was done, so coolant was changed at least once before I got it. I’ll look to see if I still have the carfax when I get home from enjoying Pure Michigan later this week.

I changed coolant and all fluids when I bought it around 140k miles.

I discovered the valley leak around 165k in late 2022 and at that point I had already bought a 23 GX460. I fixed the valley leak, and decided to sell it with about 170k miles on it to the current owner in early 2023. It’s currently got about 220k on it, not 200k as the video said. Current owner had car care nut replace the radiator with Toyota around 200k. I traded the GX460 in on a 2018 200 not long after.

So to recap:
Coolant was changed at least once in the first 140k miles (80k sticks in my head from the carfax for some reason).
I changed coolant at 140k miles.
I changed coolant at 165k when I did the valley plate.
Car car nut changed coolant around 200k.

Thanks for sharing some history, how long did the car stay with valley plate leak?
We don’t know how bad (acidic) the coolant was before each of those coolant/radiator jobs.

 

[rexington14]

This begs the question of how long after a bad overheat would it take the head gasket to fail. 80k does seem like a long time but it may not be. I have to think that modern head gaskets are damn tough.

Thanks for coming with the facts on this truck. It’s always good to know some history for issues like this.

A bad overheat will blow the head gasket within a matter of seconds to minutes. You really don't have long to shut it down.

 

[Artie]

A bad overheat will blow the head gasket within a matter of seconds to minutes. You really don't have long to shut it down.

I had what I thought was a bad one years ago in a Mazda 929, sounds like I left some on the field because I got a few more years out of it but it was never the same afterwards.

 

[hoser]

I was just getting ready to change the coolant when this video came out. '16 @ 100k including regular towing and off-road. PH = 7.5

 

[Supra Turbo]

At 180K with UZ you have brand new belt. At 180K with UR you have chain with 180K and growing.

The issue is that as vehicles get older, they are rarely properly maintained. At 180K with a UZ you have a ticking timebomb when that original belt snaps on an interference engine if it hasn't been replaced. A leaky waterpump is the least of concerns at that point.

 

[hoser]

@Supra Turbo I've had my 2UZ-FE for over 20 years. You will have a tough time finding a non-VVTI 2UZ-FE motor with damage from timing belt breakage.... despite any literature stating it is an interference engine.

 

[Supra Turbo]

@Supra Turbo I've had my 2UZ-FE for over 20 years. You will have a tough time finding a non-VVTI 2UZ-FE motor with damage from timing belt breakage.... despite any literature stating it is an interference engine.

But you know... there are VVTI motors also

 

[hoser]

Of course I know... but VVTI's make up ~8% for the 100 series. Maybe more for other models.

 

[2001 2UZ Sequoia]

@Supra Turbo I've had my 2UZ-FE for over 20 years. You will have a tough time finding a non-VVTI 2UZ-FE motor with damage from timing belt breakage.... despite any literature stating it is an interference engine.

Non vvti 2UZ with proper maintenance is the most reliable gasoline engine. Mine has 240k and just breaking in!

 

[Zill]

Does anyone have the ability to test brand new coolant with one of those strips? I’m curious how basic (ph level) the pink super long life coolant is new from the bottle.

 

[gasman4u]

Does anyone have the ability to test brand new coolant with one of those strips? I’m curious how basic (ph level) the pink super long life coolant is new from the bottle.

If someone wants to send me a strip, I have some coolant (old stock) that I was going to do one last drain and fill to make me feels goods given this recent hubub.

 

[Supra Turbo]

Non vvti 2UZ with proper maintenance is the most reliable gasoline engine. Mine has 240k and just breaking in!

Key word(s), "with proper maintenance".. which is often overlooked on vehicles with high miles. Missing the point guys...

 

[PDoyle]

I’m waiting for the HG replacement kit group buy.

 

[hoser]

For anybody thinking about preemptively R&R'ing their head gaskets, it books out to just over 16 hrs of labor for both sides.

Edit: correct time w/o touching the valves

 

[hbar]

For anybody thinking about preemptively R&R'ing their head gaskets, it books out to just over 22 hrs of labor for both sides.

I've changed out head gaskets before, though never on this motor. I'm trying to figure out why it takes that long. Seems crazy to me. I hope to never find out.

 

[linuxgod]

I've changed out head gaskets before, though never on this motor. I'm trying to figure out why it takes that long. Seems crazy to me. I hope to never find out.

Looks like it's 16 hours for the head gaskets. If you R&R the valves it's 24 hours by the FSM. Other stuff like valve cover gaskets should be part of the 16 hours as those have to come off anyway.

I'm not surprised in the amount of labor though. Just doing the timing chain cover (gasket) is 6.6 hours by the book, and I think the valley plate was also like 10 hours by the book.

 

[DallasTide]

Anybody else "overmaintain" your LC just because you enjoy tinkering with s*** in the driveway?
Buy a truck that's been maintained. Continue maintaining it. Enjoy with peace of mind.

 

[WickedCrawler]

Anybody else "overmaintain" your LC just because you enjoy tinkering with s*** in the driveway?
Buy a truck that's been maintained. Continue maintaining it. Enjoy with peace of mind.

Hear, hear!!!

 

[bloc]

Hypothetically if someone were to do head gaskets as PM (which for the record I view as excessive), throwing in new valve springs might not be a bad investment.

 

[hoser]

Here are two examples of HG failure. One at 190k and the other 146k.

3UR-FE Rebuild - Head Gasket Failure

I have been lurking the forums for a while, we bought the LC about 1.5yrs ago with 170K on the clock. Fell in love with it more than I ever thought, same will all members of the family, the quiet and comfortable ride is hard to beat. Vehicle is basically bone stock, just high miles. Vehicle has...

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