I am looking for some input on Engines for my great planes extra
reveiwing the thread I see that most are D/A 50 or BME 50 What about Brison is this a good Engine!

In my humble opinion if you want the best value it would be ZDZ 40 or 50

If you want the best ENGINE-- that would be a Taurus 42 or 52

(got a 42 on mine--cannot imagine needing more power)

Brison may not be the most powerful but I've got the 3.2 and it does great in this size plane.

Here's how a Brison 3.2 hauls a 16lb Midwest Extra. Prop is a Zinger 22x8. Have fun!

I have A Brison 2.4 in mine. Haven't flown it yet but it should not have any problems with a Airwild 21x8 peopeller up front!

The good news is that no matter what you pick from these choices you will have a great engine. personally I dont like the manual advance linkage on the brison. I like bme's so much I just picked up a 3rd, a lightly used bme 44 to go on a pitts special my 50's run like swiss watches. The DA seems a bit pricey to me. If you dont mind high octane gas ( only a pain to use if you have other gasseres that dont need it therefore requiring 2 different cans of gas) and you are buying new that zdz 50 looks attractive for the price. If you like the conventional beam mount the bme is the way to go. Just my opinion--- and Im likely to change it by tomorrow....

While the only gas engine that I have ever used as the mechnical advance I don't have a different perspective to talk from. I can say that I have not had any performance problems with mechnical advances. I guess I will go to full electronic on these engines if I need the weight reduction, but until then.....