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Joined: Feb 2011
Posts: 277
Backyard Mechanic
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OP
Backyard Mechanic
Joined: Feb 2011
Posts: 277 |
I bought an engine 1927/171 and it didn't have a valve cover, the tappets (rocker arms) are exposed but the head had 2 extended threaded bolts.
Was this for a valve cover?/
How are the valves stems lubricated if there is no oil in the upper section???
thanks ron
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Yes, your engine had a single valve cover. It mounted on the two studs you mentioned. There were 4 holes in the top of the cover that were to be oiled frequently. A felt blanket was laid over the top of the rocker arms. The oil from the 4 holes was directed to the front and rear in addition to the middle of the felt pad. This always bothers people about the lubrication of the valve stems. There are two indentions in the head. The valve stems are in these indentions. Oil is placed in the indentions to about 1/2 the distance to the top of the valve guides. This oil must be monitored and kept at the 1/2 level. This is the lubrication for the stems.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Nov 2010
Posts: 14
Grease Monkey
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Grease Monkey
Joined: Nov 2010
Posts: 14 |
There are two indentions in the head. The valve stems are in these indentions. Oil is placed in the indentions to about 1/2 the distance to the top of the valve guides. This oil must be monitored and kept at the 1/2 level. This is the lubrication for the stems. Does this apply to the 1926 engines also? Frank Y
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
All 4-cylinder engines.
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Dec 2012
Posts: 36
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Dec 2012
Posts: 36 |
Should the felt pad on top of the valves be saturated in oil, or is it okay that it is 'dry' ?
We oil the valves regularly (every second trip or so), but the felt pad is essentially dry and wondering if we should instead be soaking it in oil? If so, is there is a good process to do this ?
Appreciate the advice.
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Joined: Oct 2003
Posts: 814 Likes: 1
ChatMaster - 750
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ChatMaster - 750
Joined: Oct 2003
Posts: 814 Likes: 1 |
Chuck64;
The pad should have oil in it. There should be 4 small holes in the top of the valve cover to let you give a few squirts of oil to keep it damp with oil. It should not be dry.
Steve
'25 Superior "K", '79 Corvette , '72 Corvette LT-1 & 1965 Corvette Coupe
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
The pad is the oil reservoir to keep the valve train lubricated. It should be fuzzy wet with oil.
How Sweet the roar of a Chevy four!
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