3.5L V6 or 4.0 V6 more reliable?

I believe that.

 

That little thing was a beast. Hated to sell it, but I had too many projects.

 

So talking BBQ, now were getting somewhere!

 

Trying to, but these guys keep talking about planes and stuff.

 

No.... it's up, up, down, down, left, right, left, right, B, A select, start.

 

My brand new 1992 3.slow was awesome. Head Gaskets did fail under warranty. They replaced them with the same outdated faulty Head Gaskets and it failed again out of warranty. Dealer replaced them with apparently updated Head Gaskets. No cost to me either time and no more Head Gasket issues.

Drove the truck for 14 trouble free years overall and still sold it within a day for surprisingly crazy resale. But was very well maintained. Always started and never ever left me stranded. The 150 HP and 180Lbs torque 3.0 were adequate numbers for the times. The 5 speed manual helped so I could hold the gears when towing and other things.

I loved that truck despite the Head Gasket issues. Everything else was awesome. Sold with original clutch. Truck left a big impression on me and Toyota trucks overall. Remains with me today.

I know this engine is often maligned but I had a very positive experience despite the HG failures. However, I thought it was stupid to put that engine in the T100. So, no mater what engine you have, the overall experience with these trucks is the greater variable overall.


Drove this to Alaska and back in the fall of 2003. Not one issue.

https://tuningpro.co/toyota-3vze-3-0l-v6-engine/

1) Toyota 3VZE Head Gasket Failure
Head gasket problems are one of the most common issues with the 3VZE engine. It’s without question a big topic for this engine. The Toyota 3VZE head gaskets are responsible for sealing the gap between the block and cylinder head. In 1990, Toyota re-designed the head gasket to not include asbestos. Good change for health reasons. However, asbestos is great at resisting heat and heat is a big problem when sealing the gap between different metals – iron and aluminum.

Toyota likely should have used more molybdenum on the 3VZE head gaskets with the new design. However, it’s an expensive material and not enough was used. Long story short – this led to huge problems with the 3.0L V6 head gaskets. Enough of an issue that Toyota extended the cylinder head gaskets warranty coverage to 8 years and 100,000 miles.

The 3VZ head gaskets were also re-designed again to act as a long-term solution to failures. Changes include more molybdenum, more port spacing, and bore grommets. If your Toyota 3VZE head gasket was replaced after 1997 this shouldn’t be a big concern. Of course, failures can and do still occur but the new part is much better.

 

Bigoldbeef do share some of your maintenance methods Sir

 

hey james! what's ROTC like?

ha ha ha ha!

 

Sounds like fake news.

 

Oh my! Gives me pause in buying my son's 2019 Tacoma. Maybe he's getting back at me for something I did or didn't do in his youth?!

 

Hell, when you are camping and after a couple of beers....it's all good!

 

@G2.M6 soooooo?

 

They use turbines for the APU. In the case of the Airbus it is made by Honeywell

 

Ironically I was there to drop off my 4.0 heads when replacing my head gasket...

 

There are also probably 10x as many 3.5's out there too because they have been used all over the Lexus and Toyota lineup.

 

We did talk about that fact at the machine shop, but hes never seen a 4.0 head come in from an engine under 100k miles (mine was somewhere around 170kmiles) while many of the 3.5 heads were coming in from dealerships doing warranty work or cars less than 60k miles.

 

This piggy backs my statement about talking to any Toyota service manager that has been in the game a while. The Tacoma 3.5 is generally more problematic than the 4.0.
The 3.5 seems to be solid in most other applications other than the tacoma.

 

I can’t imagine the amount of as asbestos to be anywhere in the range needed to cause health issues … let alone it is inside an enclosed engine. I suppose over time it’s an issue for someone dismantling old engines…


Learned something new today