{"id":15,"date":"2007-10-03T15:25:35","date_gmt":"2007-10-03T20:25:35","guid":{"rendered":"http:\/\/dieselrc.com\/blog\/?p=15"},"modified":"2007-10-04T06:57:58","modified_gmt":"2007-10-04T11:57:58","slug":"more-fs-91-surpass-diesel-conversion","status":"publish","type":"post","link":"https:\/\/www.dieselrc.com\/blog\/?p=15","title":{"rendered":"More FS-91 Surpass Diesel Conversion"},"content":{"rendered":"<p>I continue to work on the FS-91 conversion. I think that the carb for this size engine is becoming the sticking point. The acceptable air\/fuel mixture range is rather narrow and the model carbs lack the proper tuning. Since model diesel fuel, especially without ether, approaches air\/fuel ratios of gasoline I decided to try a Walbro carb designed for gasoline fuel. These are common on small portable gasoline engines. A straight manifold was made to adapt it. I spent quite a bit of time trying to get the carb working. There is some conflicting information about setting up the Walbro carburetors on the internet, which me cost some aggravation and time. I have the engine running with the Walbro pumped carb. Some fine tuning and a velocity stack is still necessary. It will be a nice addition with the built in pump and better fuel regulation. A new manifold is also in the works. I look forward to test flying the engine soon.<\/p>\n<p><img decoding=\"async\" align=\"middle\" title=\"OS FS-91 diesel conversion with Walbro carb.\" alt=\"OS FS-91 diesel conversion with Walbro carb.\" src=\"http:\/\/www.dieselrc.com\/images\/fs-91_walbro.jpg\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I continue to work on the FS-91 conversion. I think that the carb for this size engine is becoming the sticking point. The acceptable air\/fuel mixture range is rather narrow and the model carbs lack the proper tuning. Since model diesel fuel, especially without ether, approaches air\/fuel ratios of gasoline I decided to try a [&hellip;]<\/p>\n","protected":false},"author":90052,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,2],"tags":[],"_links":{"self":[{"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/15"}],"collection":[{"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/90052"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15"}],"version-history":[{"count":0,"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/15\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dieselrc.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}