Needing "390919" > Oil Drain Plug

[fleming442]

The evidence of broken chains doesn't interest you?

I've been messing with cars for a minute, and have never seen a broken chain. Stretched? Yes. Broken? No. What's the history? Brand? Circumstances during breakage?

 

[84 El Camino 231]

I never had an issue with metal shavings.

Does your experience involve using a magnetic drain plug? I don't see why anyone wouldn't use one if they could.

 

[84 El Camino 231]

I only called you weird because you asked for it. I don't think anyone, ever has replaced a metal timing gear with a plastic one unless it's some high soot, carbon fiber belt drive system.

I agree, I prefer the metal gear as well but there are some folks who actually switched back to the plastic gear after witnessing an afro on their drain plug. The afro disappeared.

 

[565bbchevy]

Yes, many people do upgrade to double roller but those scare me a little.
The evidence of broken chains doesn't interest you?

If I based my thoughts on double rollers off the pictures you posted then I would leery also, but not knowing what actually happened to the engine in question there could have been an engine failure that locked up the engine at high RPM causing the chain to snap.
I have been running double rollers in my 550+ cubic inch big blocks for many years and spinning them to 7400+ RPM and I trust them to do their job as a failure would not only be catastrophic it would also be extremely costly.
I don't use magnetic drain plugs but I do use high powered magnets on my dual oil filter set ups and will cut the filter for inspections.
I get that you are probably not into the performance aspect of engine building and if a nylon gear works for you then go for it.

 

[84 El Camino 231]

I've been messing with cars for a minute, and have never seen a broken chain. Stretched? Yes. Broken? No. What's the history? Brand? Circumstances during breakage?

All good questions! 🙂 Those roller chain examples above are 231 turbo V6 blocks running roller cams. I have other examples of broken OEM roller chains, quality may be an issue, who knows what bean counters are up to, it's not clear to me, I just see with my eyes.

 

[84 El Camino 231]

I get that you are probably not into the performance aspect of engine building and if a nylon gear works for you then go for it.

I'm not sure you understood, I didn't say I prefer the nylon gear. I also cut open my filters but not every time but do look at the magnetic drain plug every time. My experience comes from street motors mostly, family cars. I'm not a drag strip guy.

 

[fleming442]

All good questions! 🙂 Those roller chain examples above are 231 turbo V6 blocks running roller cams.

🤔 so, not even your engine?

 

[melloelky]

this started out as an odd thread and it's...

 

[ssn696]

 

[84 El Camino 231]

Why would anybody want to run a nylon toothed cam sprocket.

GM chose the material, considering all the well-heeled knowledge here I'm surprised I'm the only one who knew?