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Joined: Mar 2010
Posts: 2
Grease Monkey
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Grease Monkey
Joined: Mar 2010
Posts: 2 |
THE VALVE COVER ON MY 235 HAS SLOTS ALONG THE TOP. ANYONE HAVE ANY IDEA WHY?
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Joined: Oct 2009
Posts: 9
Grease Monkey
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Grease Monkey
Joined: Oct 2009
Posts: 9 |
I've noticed this on the 235s also. Only logical reason is to provide additional ventilation to the top part of the engine.
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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 |
Your engine has a draft tube and the vents allow air to enter and be drawn out the draft tube.  
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: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The 1954 valve cover is the only one of the "four screw" covers to have slots. The 1955 and up had a breathing mesh oil filler cap
Gene Schneider
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Joined: Mar 2010
Posts: 20
Grease Monkey
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Grease Monkey
Joined: Mar 2010
Posts: 20 |
This may solve another problem I have with my 54. I get a lot of blow by from the vent tube and really messes up my undercarrage and garage floor. The car has an aftermarket chrome valve cover with no vents. Could thisbe causing the blow by from the tube. The engine is newly rebuilt and has only 3,500 miles. Does not use oil just get a mess from the tube. May look for a breathable cap that fits
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
It may be allowing pressure to build up in the engine,,,find a 1955-62 6 cyl breather type cap. If it continues to have that much blow-by it indicates the compression rings are not sealing. May take another 10,000 miles of driving to seat them in.
Gene Schneider
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