 Does the crank case push pressure or pull a vaccume?, I did something stupid.... |
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| VaccaRabite |
 Aug 8 2021, 06:38 PM
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En Garde!  Group: Admin Posts: 13,456 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region  |
So some of you may remember my thread a couple weeks back that the oil filler cap disappeared during a spirited drive a while back. I have 2 other caps, but they are the wrong size (grrrr).
I drove a couple times and not much oil came out, but a little did. So I figured some aluminum foil where the filler cap should be would keep the small amount of oil the comes out from happening. So after applying some heavy duty foil, I fired her up and went for a drive for about an hour. Came back and the FOIL WAS NOW GONE! There was foil around the lip of the filler, but the foil the covered the opening has either been blown off, or sucked into the crank case. So... yeahhhhhhhhhh. (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/stromberg.gif) (IMG:style_emoticons/default/slap.gif) Engine ran great. No changes to oil pressure or oil temps. Clearly I need to drain the oil out and also pull the tuna can off and look around. So. How boned am I? Zach |
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| SirAndy |
Aug 8 2021, 07:00 PM
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Resident German Group: Admin Posts: 41,669 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(VaccaRabite @ Aug 8 2021, 05:38 PM)  Does the crank case push pressure or pull a vaccume? Both, depending on the rpm ... (IMG:style_emoticons/default/shades.gif) |
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| SirAndy |
Aug 8 2021, 08:55 PM
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Resident German Group: Admin Posts: 41,669 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(SirAndy @ Aug 8 2021, 06:00 PM) QUOTE(VaccaRabite @ Aug 8 2021, 05:38 PM) Does the crank case push pressure or pull a vaccume? Both, depending on the rpm ... (IMG:style_emoticons/default/shades.gif) To elaborate, on my 2056 i used to blow out the plugs for the head vents. So i did some testing and at lower rpm <3k-ish the engine would suck in air through the head vents but above >3k-ish it would switch to blowing out air (and oil) from the same vents. (IMG:style_emoticons/default/idea.gif) |
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| wonkipop |
Aug 9 2021, 04:46 AM
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Advanced Member Group: Members Posts: 4,372 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille 
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QUOTE(SirAndy @ Aug 8 2021, 08:55 PM) QUOTE(SirAndy @ Aug 8 2021, 06:00 PM) QUOTE(VaccaRabite @ Aug 8 2021, 05:38 PM) Does the crank case push pressure or pull a vaccume? Both, depending on the rpm ... (IMG:style_emoticons/default/shades.gif) To elaborate, on my 2056 i used to blow out the plugs for the head vents. So i did some testing and at lower rpm <3k-ish the engine would suck in air through the head vents but above >3k-ish it would switch to blowing out air (and oil) from the same vents. (IMG:style_emoticons/default/idea.gif) thats very useful empirical information. nothing like facts. i'm still laughing at the tin foil hat on the oil filler! sorry VaccaRabite - i do feel for you. thats two things that have disappeared into the void. make sure its not three. its the third one you got to watch out for. |
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Posts in this topic
VaccaRabite Does the crank case push pressure or pull a vaccume? Aug 8 2021, 06:38 PM
BeatNavy Zach, pretty sure intake is going to have vacuum (... Aug 8 2021, 06:44 PM wonkipop :agree:
most likely.
there is vacuum but its at... Aug 8 2021, 06:52 PM
VaccaRabite
:agree:
most likely.
there is vacuum but its a... Aug 8 2021, 08:01 PM Spoke I would think the crankcase would be under pressur... Aug 8 2021, 06:54 PM Krieger Cut your oil filter open and give a look. Aug 8 2021, 11:26 PM |
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