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Scooters (English Spoken)
Engine modifications and repairs
Jetting directions for Keihin PWK 28 on 172cc AC Piaggio
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<blockquote data-quote="Arne" data-source="post: 3332774" data-attributes="member: 187"><p>As no one seems to have an idea, I will update the thread myself <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /> . There is not much information on the web on this subject so someone might find it useful.</p><p></p><p>I found out that the Keihin PWK might not have been the best choice for my engine, as the stock pilot jetting and needle are too rich. </p><p></p><p>The carb is now jetted with 150 main, 35 pilot, some strange Mikuni needle, and 3.0 slide. It runs, but is way too rich.</p><p></p><p>I have ordered a 125-148 main jet kit, 32 pilot (OKO, smallest available) and 2 needle sets, BGM and OKO. </p><p></p><p>Finetuning of the carb setup will probably be done on a rolling road with air/fuel ratio meter.</p><p></p><p>Keep y'all posted <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Arne, post: 3332774, member: 187"] As no one seems to have an idea, I will update the thread myself :D . There is not much information on the web on this subject so someone might find it useful. I found out that the Keihin PWK might not have been the best choice for my engine, as the stock pilot jetting and needle are too rich. The carb is now jetted with 150 main, 35 pilot, some strange Mikuni needle, and 3.0 slide. It runs, but is way too rich. I have ordered a 125-148 main jet kit, 32 pilot (OKO, smallest available) and 2 needle sets, BGM and OKO. Finetuning of the carb setup will probably be done on a rolling road with air/fuel ratio meter. Keep y'all posted :) [/QUOTE]
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Scooters (English Spoken)
Engine modifications and repairs
Jetting directions for Keihin PWK 28 on 172cc AC Piaggio
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