What is this guard around the valve spring?

[CLi87]

Ayuh,.... If the valves don't rotate, you'll be replacin' the heads in short order,....

The valve rotators are the spinning part on the bottom of the valve, but can I just leave the oil control sleeve off? They're a real pita to install, it seems like their purpose is...well oil control? It seems in this engine there's not really any valve stem seal, just a plastic cover really so I would think the sleeves help prevent oil from going down the stem and into the combustion chamber? But are they really necessary or just over-engineered? I've never seen these sleeves in any other engine.

 

[Scott Danforth]

The valve rotators are the spinning part on the bottom of the valve, but can I just leave the oil control sleeve off? They're a real pita to install, it seems like their purpose is...well oil control? It seems in this engine there's not really any valve stem seal, just a plastic cover really so I would think the sleeves help prevent oil from going down the stem and into the combustion chamber? But are they really necessary or just over-engineered? I've never seen these sleeves in any other engine.

Are you using stock valve seals or upgraded?

If using stock, use them. If using improved seals, you can eliminate them

 

[CLi87]

Are you using stock valve seals or upgraded?

If using stock, use them. If using improved seals, you can eliminate them

I actually just re-used the original ones, they were in good shape and the engine only had 8 hours on it, but had been sitting for 25 years. Do you have a link to the improved seals you're referring to?

 

[Scott Danforth]

I actually just re-used the original ones, they were in good shape and the engine only had 8 hours on it, but had been sitting for 25 years. Do you have a link to the improved seals you're referring to?

Talk to your local machine shop