For those who are interested here are the numbers needed to order a B&S 34cc 4Stroke Powerhead from Sears.


B&S Model number 21032-0112-E1

Sears Number 35879612


Call Sears Service in your area and they can ship one to your door. We paid $154 for the powerhead and shipping in our case was $14.90, total cost with Tax was $189.

How much would/will it cost to convert?

Less than $50 if you don't go for electronic ignition. Whacker engines has some experience with this engine and probably could fix you up. They made a prop shaft for another flyer who posted here earlier.

Can you post a picture when you get it?

It won't arrive until Wednesday next week. But I will post pictures. I don't advise anyone to buy this engine just now. An earlier post by a flyer researching this motor said it would turn an 18 X 10 prop at 7500 RPM, but in another flyer's opinion, this motor is a real dog. I took a chance on it. We will see how strong it is.

Well, if you are planning to put in something with a big wing, like a big Cub or PT19 it might be real nice to have a 4 cycle gasser putting around. But it probably won't work in a Cap or Extra.

I hope yours runs better than mine did..I might have screwed it up "improving" it, I milled the head for more compression and did a slight port job on it...

RCIGN1, did you fly any model with this engine? I was hoping to put it on the front of a Balsa USA Fokker DVII. I'm getting the feeling I've bought a boat anchor. I hoped it would be strong enough to fly the DVII scale like. Oh well, I can always put it in a big Cub.

By the way; I was wrong in saying that Whaker Engines had experience with this motor. I e-mailed them and they said they knew nothing about it. I can't seem to find that particular post which I alleged mentioned Whaker making up a prop hub.

I didn't put it on a plane, it got sent back to the owner..He has a plane to put it on..