Ben145 Posted January 30, 2022 Report Share Posted January 30, 2022 Anyone running castor 927 in their trials bikes? I run it in my dirtbikes and jetskis without a problem. Was wondering if any of y’all ran it? Quote Link to comment Share on other sites More sharing options...
peterh Posted January 30, 2022 Report Share Posted January 30, 2022 I did a few years back, but stopped using it for trials. Great 2-stroke smell 😀, no sticking of rings (the usual comment with castor based oils of old) but with a Flash Point of 214°C ( by memory) I got perhaps got too much oil spread in muffler. Most noticeable was a hard carbon layer in exhaust header that I hadn't had with other oils and haven't since and really hard carbon on piston dome. Maybe some circumstantial evidence but didn't seem to work for me. Oh, and the most important thing was that it didn't keep my feet up better or me to win more trials. My thoughts, best left to the high revving performance engines, not trials. 2 Quote Link to comment Share on other sites More sharing options...
magnapoxy Posted January 30, 2022 Report Share Posted January 30, 2022 I ran 927 in a 5th scale HPI 5 b ss. approx 2 tanks of fuel. had to remove the expansion chamber and hot tank it 2 times to rempve the nasty build up in it. 30.5 cc long rod 4 bolt - 18-1 compression ratio. running the buggy wfo in sand dunes. nice smell though-- lol. Quote Link to comment Share on other sites More sharing options...
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