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V M Kauffman · 05-26-2016, 12:29 PM

The better the engine is sealed up the less Blowby you will have which equals less Crankcase Pressure you will have. If the engine is a wet sump you can measure the Blowby with a good Blowby meter. Low leak down readings do not equal low Blowby.anything over 2cfm is too much.

05-26-2016, 12:29 PM	#4
V M Kauffman Member Join Date: Mar 2013 Location: Greentown, IN Posts: 113 Likes: 0 Liked 0 Times in 0 Posts	Re: Crankcase Pressure The better the engine is sealed up the less Blowby you will have which equals less Crankcase Pressure you will have. If the engine is a wet sump you can measure the Blowby with a good Blowby meter. Low leak down readings do not equal low Blowby.anything over 2cfm is too much.