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Re: BOTTOM BREATHER | Subject: Re: BOTTOM BREATHER by ddgonzal on 2017/10/3 5:11:58
the pressure is mostly due to blow-by and crank rotation, so it's mostly in the bottom half. The early A-series had the top half capped off with the above-the-head space vented via the head's oil drain holes, then to the bottom breather tube
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