RB .21 s3 fuel question
#16
Tech Fanatic
iTrader: (35)
well, i love it. runs great and it's not completely tuned yet. how do i determine it the (lsn)idle/air is to fat. it seems a little loaded when i give it gas, but seems good every were else. 240-250 f all day and i got about alittle more than 6 min on a tank...i'm wondering if i need the RB pipe. i have a dynamine 086 pipe. just wondering.
#17
Tech Apprentice
230-240 is about right for the S3. If you can get Werks 30%, try that fuel as it really works well with RB engines. Once the motor has about 1.5 gallons on it, the top-end will go up and the temp will drop.
#19
Tech Apprentice
I'm split on shimming. On some engines, they do the trick, on others..... not so much. I shimmed my S7 while moving up to 30%, and the darn thing wouldn't go above 215 degrees, and became a tuning nightmare. I have since removed the shim, running 3011 Byron Gen2, and hitting my 245-255 mark with ease, and very little tuning. My plug life is good, the internals have looked great on every teardown, and it runs as good as it probably ever will.
Experiment. Start with a shim, and if it works -- awesome! If not, take it out, or shim lower.
Experiment. Start with a shim, and if it works -- awesome! If not, take it out, or shim lower.