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10-14-2019, 10:00 PM | #21 |
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Join Date: May 2010
Location: MN
Posts: 7,053
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Re: Smoke from oil cap?
Blow by. but a hot motor vapes oil of the downdraft?
Geez does anyone run a regular oil vent system. I've never had concern. Christ these motors leak a bit. Nobody freaked out. . |
10-14-2019, 10:48 PM | #22 |
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Join Date: May 2013
Location: Pa.
Posts: 2,161
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Re: Smoke from oil cap?
U r right. Engine runs fine w crankcase venting from rear draft tube. Don’t think anyone takes issue w that. Some just prefer a cleaner underside of the car by not letting the draft tube spray vapor laced w dirty oil underneath while rolling down the road. I have put pcv’s on all my pre pcv cars & noticed they’re a lot cleaner on underside when working on them, JMO.
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10-14-2019, 10:59 PM | #23 |
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Join Date: May 2010
Location: MN
Posts: 7,053
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Re: Smoke from oil cap?
Guess best I can say... from the words of Bruce Lancaster " fords leak oil to protect the underside of the car". Not verbatim.
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10-15-2019, 05:43 AM | #24 |
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Join Date: Jul 2016
Location: Lake worth Florida
Posts: 1,073
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Re: Smoke from oil cap?
Glad you got it working as it was . I guess you need to put the pedal to the metal a little more often. I run marvel in my gas , seems to keep everything working nicely.
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10-16-2019, 10:16 AM | #25 | |
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Join Date: May 2010
Location: CLAYTON DE
Posts: 1,280
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Re: Smoke from oil cap?
Quote:
At one time I lived on a busy street. I found black silt on window mouldings and sills, that required attention every few days. Positive crankcase ventilation saved the day. It made the growth in travel possible. Not to discount paper filters, and electronic fuel injection.
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10-17-2019, 08:54 PM | #26 |
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Location: MN
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Re: Smoke from oil cap?
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But I might as well buy a new car if I want to turn my flathead into a new car.... A vent tube on a 8ba shouldn't be spitting oil. Might be bad rings (blowby). . Last edited by Tinker; 10-17-2019 at 11:36 PM. Reason: spelling... |
10-21-2019, 08:42 AM | #27 |
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Join Date: Jan 2011
Location: Central Ohio
Posts: 5,009
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Re: Smoke from oil cap?
The design of the crankcase draft system on the 8BA is a lot better than the 59X and earlier style of engines - by a long shot. BUT - many of us don't like to run a stock 8BA oil draft system - due to the location and look of the stock tubes (they are ugly and can be a real pain to install on many modified engine).
The 8BA system should not be spitting out much oil - but it will always drip some (as will any system of this design). Oil vapors have oil in them - this will collect on the inside of any draft tube that exits to the bottom of the engine . . . and it will drip. The 59X and earlier road-draft systems will drip a lot more oil . . . and given the oil pan vent location, it all runs down the oil pan and can make quite a mess on your garage floor and the underside of your car. If you're running a stock 59x road-draft system, you either learn to live with it (and buy one of those larger oil drip pans made for your garage), or you can decide to modernize and switch over to a PCV. I tend to live with it . . . but I also clean the underside of my engine quite often. Just some opinions here . . . B&S |
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