Honda Recall - 3.5L main bearing problems 1

[drwebb]

So Honda is having trouble with their V6 main bearings: https://www.cnn.com/2024/11/11/business/honda-engine-recall/index.html

Not a good look such a basic component has a defect coming from an OEM that leans into their engine durability prowess (or at least used to).

 

[XR250]

A minor issue on a few years of one variant, of one engine, in one of the most-produced engine families, known for reliability in everything from 3rd world cheapies to 1st world supercars.

Not true at all.Timing chains and phasers. Watch Ford Tech Makuloco's videos.

 

[TugboatEng]

The problem here is that many are relating their experiences with NBR or EPDM rubber to HNBR rubber which is quite a bit more durable under hot engine conditions. You can't blame the rubber for incorrect specification.

As for engine room fires, lube oil and diesel fuel both have lower auto-ignition temperatures than gasoline. Fires do happen. I've had one. It was a lube oil fire that ignited when a steel line broke.

 

[XR250]

You can't blame the rubber for incorrect specification

I imagine whoever designed the belt (Gates maybe) is well versed in hot versus warm conditions. Seems like it is more not finding a mix that will tolerate all the chemicals in used engine oil for that amount of time/miles. Although, Honda has been using wet belts in their small equipment engines for decades - which notoriously have dirty oil.. Have not heard many issues with them although the consequences of a broken belt in that application is not much.