Hot Rodding B&S 1150 series

[JayPadilla]

I've got one of the new weird B&S OHV engines (I think mine is a 07) it's the weird 1150 series 250ccwith the 3/4" pto. Just wondering if anyone knows how universal that motor is before I start buying parts. Thinking about a mean cam from an animal or WF or something maybe an animal flywheel with the LO206 GREEN 6100 rpm coil a billet flywheel, hardend animal or WF pushrods and HD dual valve springs and retainers. Anyone ever try this one of these industrial engines? The blocks are very much similar. Same shape, I'm sure same size flywheel, etc..

 

[Bill Ellerby]

The piston/rings/rod are not interchangable with the Animal/WF. You can replace the cam thou with the all metal cam from the Animal/WF. Pretty sure you can use the flywheel too. But without a billet rod you are wasting you time. I have one of the 150000 model motors my first and took it apart to see the difference. I have 26 Briggs Inteks and only a handful of parts on the 1150 series are not compatible with the other motors I have. I believe that motor is rated at 7.8hp which is plenty for a mini bike.
P.S.- Try contacting Briggs and Stratton at their website. They have a section on racings engines that might be of interest to you.

 

[JayPadilla]

how much a difference would the stock cam of a animal or WF make in my engine? Or could i go with a bigger cam for those motors? Just trying to make the most of what i have. and what about the coils? I want to use the green coil from the lo206, i'm betting on that rod not to blow at 6100. (just me) ?