a question about lubrication

[Paul Pless]

how were the top ends (valve train) of motors such as this lubricated?

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[Bobcat]

Re: a question about lubrication

With oil

[Paul Pless]

Re: a question about lubrication

thanks bobcat

[Tom from Rubicon]

Re: a question about lubrication

Manually.

[Paul Pless]

Re: a question about lubrication

how did the oil get there?

how much oil?

if manually, how often was the oil applied there?

[Paul Pless]

Re: a question about lubrication

Thank you Tom

[TerryLL]

Re: a question about lubrication

For a 1927 Chev with an open valve train:

"The Chevy 4 cylinder engines do not pump oil up to the rocker arms. According to the lubrication chart in the manuals, you have to squirt some oil (10-30W) on the rockers and on the felt every 50 miles. The oily felt creates a mist that lubricates the rockers in between the 50-mile service operation."

[Peerie Maa]

Re: a question about lubrication

how were the top ends (valve train) of motors such as this lubricated?

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Tallow, bears grease?

[bob winter]

Re: a question about lubrication

I suspect that the lubrication was on the spotty side, especially when the vehicle got older.

[Paul Pless]

Re: a question about lubrication

what about early aero engines with open valve gear?
were they just lubricated before takeoff, or was there some method of spooging lube while in flight?

[Canoeyawl]

Re: a question about lubrication

Oil vapor is an effective lubricant in lower pressure applications.
(Hot vapor rises - all those old flathead V8 engines had no provision for oiling the valve tips/springs and guides except oil vapor from the crank case)

I had a 1928 McCormick tractor (pushrods) that had a metal tag attached to the valve cover stating 'oil the rocker arms twice daily'
It had oil cups on the valve cover expressly for this purpose. When I owned it it was 50 years old and had disc harrowed the same orchard since was new. (There was no appreciable wear to the valve train. It still started on the first pull of the crank. In fact there was a disadvantage to over oiling it, the exhaust valve guides would get "sticky")

I think those old motorcycles with constant loss lubrication were covered with oil, and smoky, filthy things to ride, hateful in fact.

[Henning 4148]

Re: a question about lubrication

About the early aircraft engines lubricated with castor oil - was it here in this forum, where the information was shared, that the pilots of these early aircraft used to drink red wine against diarrhea?

[Canoeyawl]

Re: a question about lubrication

I have been known to drink red wine for the briefest of excuses!

[Dave Hadfield]

Re: a question about lubrication

Some old airplane engines did not have oil-bath lubrication to the heads. The rockers sometimes have a grease fitting. And you have to take the rocker-cover off and give everything an oil squirt once in a while.

The Bristol Mercury in the Lysander I fly is like that. The valve springs and stems are exposed completely, no cover, and sometimes stick, especially in hot weather. It's the first thing you look for if the engine runs a little rough at cruise -- usually an exhaust valve sticking.

In the photo the gap is supposed to be about 15-thou, not half an inch.


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[Kevin T]

Re: a question about lubrication

I’m all for it!����