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badsix
Samba Member
Joined: November 22, 2007
Posts: 228
Location: coos bay or.
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 Posted: Tue Nov 22, 2016 12:35 pm Post subject: 356 valve covers |
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i'm getting ready to assemble my 58 356 engine, its a 1600 N with big bore and r200 cam. anyway I want to plug the vents on the valve covers. I just can't fathom going around a long corner at speed and having oil pour out the vents all over the heater boxes and exhaust. so if I plug the vents is there anything else I need to do THANKS
Jay D. |
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Starbucket
Samba Member
Joined: April 30, 2007
Posts: 4025
Location: WA
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| Posted: Tue Nov 22, 2016 1:32 pm Post subject: Re: 356 valve covers |
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| I don't think plugging the vents is a good idea. Porsche wouldn't have went to the trouble and expense of adding them unless they were needed. The valve covers shouldn't be filling up with oil to the point of spilling out. |
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Three56SC
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Joined: January 26, 2013
Posts: 12
Location: San Pedro, CA
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| Posted: Tue Nov 22, 2016 7:36 pm Post subject: Re: 356 valve covers |
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You could get some late C or 912 covers - they did not have vents. Then you wouldn't bugger your original covers.
I don't think you would have any trouble with a rebuilt motor and normal blow-by considering the size of the road draft tube on that motor (make sure it is clean and unobstructed) |
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AXAM
Samba Member
Joined: November 02, 2003
Posts: 314
Location: Gods country,ca
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| Posted: Thu Nov 24, 2016 9:45 am Post subject: Re: 356 valve covers |
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Do not plug them. They are there for a reason. The motor needs to vent. If you don't vent the motor enough it will cause oil leaks elsewhere.
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Starbucket
Samba Member
Joined: April 30, 2007
Posts: 4025
Location: WA
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| Posted: Thu Nov 24, 2016 9:56 am Post subject: Re: 356 valve covers |
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| Make sure the screens are in the vents and are clean. They work as baffles. |
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badsix
Samba Member
Joined: November 22, 2007
Posts: 228
Location: coos bay or.
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| Posted: Thu Nov 24, 2016 11:43 am Post subject: Re: 356 valve covers |
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| Three56SC wrote: |
You could get some late C or 912 covers - they did not have vents. Then you wouldn't bugger your original covers.
I don't think you would have any trouble with a rebuilt motor and normal blow-by considering the size of the road draft tube on that motor (make sure it is clean and unobstructed) |
This is what i'm wondering as some 356s didn't have the vent. and it is a problem when briskly rounding a sharp or long corner.
Jay D. |
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ensys
Samba Member
Joined: March 11, 2009
Posts: 322
Location: America's Automobile Heartland
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| Posted: Fri Nov 25, 2016 11:27 pm Post subject: Re: 356 valve covers |
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I would note that the ventless valve covers were only used on later heads that had, at their top flange, ports that were part of a positive crankcase ventilation system.
The passive "road draft" case vent did/does not effectively vent the heads above the valves.
Perhaps you're sloshing out the cover vents because there is too much oil in the sump or maybe VW pushrod tubes....
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S.J.Szabo |
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badsix
Samba Member
Joined: November 22, 2007
Posts: 228
Location: coos bay or.
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| Posted: Sun Nov 27, 2016 11:12 am Post subject: Re: 356 valve covers |
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i'm thinking i'll just run them stock as they are and see if I have any problems. if then i'll do something, with my type of driving they my be just fine.
thanks everyone
Jay D. |
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