Altavillan, Thanks for all the info on the BME 115, Since its been 3 years since I bought this engine I doubt they will send me the block for free now,I wonder what they charge for one ? and I also was wondering if any twin rcexcel ignition will work, like the one DLE uses on the 111? I'm not in a hurry to fire it up anyway since we in Michigan are nearing the end of our flying season now. The DLE is on my 110 inch yak right now and doing good so far,but if I swap engines with this BME 115 I will probably have to also shuffle some gear around to make it ballance with the lighter engne, But I have all winter to make it work.........I will have to see, more power is always good