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EarlyBay Forums
Technical
Oil coming up through dipstick at high revs
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<blockquote data-quote="atafonso" data-source="post: 604210" data-attributes="member: 23592"><p>Just as i suspected.</p><p>The I.D. of the nipple on the breather tube is too small, around 9mm which is even smaller than the early original breather pipe.</p><p>Second and most important, the plastic fitting from the carb to the hose is the main problem as the I.D. of that is even smaller.</p><p>To make it work well, remove the alu breather tube, tap it for 3/8"npt for a barbed fitting and use a 1/2" I.D. hose. Get one of the 90 deg brass oil fittings used for full flow oil filter conversions and with another 3/8" barbed fitting install on the air cleaner. The 90 deg fitting has a step inside and can be enlarged to 11mm. That should be enough breathing for your 1600<img class="smilie smilie--emoji" loading="lazy" alt="😉" title="Winking face :wink:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png" data-shortname=":wink:" /></p><p>Abel</p></blockquote><p></p>
[QUOTE="atafonso, post: 604210, member: 23592"] Just as i suspected. The I.D. of the nipple on the breather tube is too small, around 9mm which is even smaller than the early original breather pipe. Second and most important, the plastic fitting from the carb to the hose is the main problem as the I.D. of that is even smaller. To make it work well, remove the alu breather tube, tap it for 3/8"npt for a barbed fitting and use a 1/2" I.D. hose. Get one of the 90 deg brass oil fittings used for full flow oil filter conversions and with another 3/8" barbed fitting install on the air cleaner. The 90 deg fitting has a step inside and can be enlarged to 11mm. That should be enough breathing for your 1600😉 Abel [/QUOTE]
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Oil coming up through dipstick at high revs
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