I had a really hard time getting this motor to break in and the idle and temp were all over the map... This is my 3rd Reedy Engine that I have broke in now and this is my thoughts...

1. The low end needle tends to ship from factory pretty lean... I had to richen it up a bit to get correct idle and make sure air gap is set correclty.

2. You need to turn the idle up a bit on these as they will stall easily in the first 1/2 - 3/4 gallon as they have a pretty tight pinch to wear in.

3. Preheat the engine every time if possible at least duing break-in.

4. These engine go from tough to keep running to super easy to tune and provide just stupid power once they break-in... I find this to be right around a full gallon.

I was running my ST in my truggy this weekend and it was fighting me a little on the tune plus i was finishing the breakin.... The motor came in during the A-Main and it was a MONSTER... I ran it with a 7.5mm insert and the 2035 piple... The power was amazing! I have not done a runtime check as of yet because the motor just come into it's own.

These engines do run a bit hotter then other ones I have run... My ST runs best around 260 - 270 in the truggy but as stated above... It has good smoke, idles great and provides TONS of power... So all good in my book!

Hope this helps.