361 stroker hybrid

[Loony661]

I wish we could see this saw get dyno’d..

 

[K-techcowboy]

I wish we could see this saw get dyno’d..

Me as well. Ive bein looking into a small engine dyno. Maybe one day I can build one and do that. But for now im throwing a fresh bb kit on my 361 I just found for $100

 

[Ketchup]

I’m getting mine together. Slowly. Hasn’t been bad so far. Case is cut, crank is in, jug is fitted. I went 54mm, 660 piston. Probably stock muff with huge outlet, 661 carb.

 

[Ketchup]

I doubt the AM big bore will make the power that the hybrid can produce. They usually barely keep up with a stock jug.

 

[Powerstroke Cowboy]

I’m getting mine together. Slowly. Hasn’t been bad so far. Case is cut, crank is in, jug is fitted. I went 54mm, 660 piston. Probably stock muff with huge outlet, 661 carb.

Going to do a build thread after you get it all together and working?

These builds interest me more than just a port job.

 

[Ketchup]

Going to do a build thread after you get it all together and working?

These builds interest me more than just a port job.

I’ve got a few photos but I didn’t do a very good job documenting so far. Plenty more to do. If it doesn’t crater I’ll try to do a writeup.

 

[Powerstroke Cowboy]

I’ve got a few photos but I didn’t do a very good job documenting so far. Plenty more to do. If it doesn’t crater I’ll try to do a writeup.

That would be awesome!

 

[Woodwackr]

Hello all im Phil from New Zealand, this is my first post, I have a MS361 with 440 crank and 460 cylinder. Used a 440 carb,272 piston ,ms360 flywheel and modded 361 muffler ,all running good with original covers. Cylinder holes required a lot of slotting to fit the different bolt pattern and cases needed machining for crank clearance.

Frankinsaw!

 

[stumpyfine]

I'm interested in alittle more detail about what was needed to make everything fit and how it compares to a stock 361. Wonder if it would out run a ported bigbore 361?

Thanks, to fit the crank the case needs machining, this is easy if you have a lathe. The cylinder needs machining to fit. This unit has is built from clone parts I had. The big advantage of these is cheap prototyping. I have now proved it all works. I can't give a comparison of how it compares with a stock 361. I know if it was built with ported oem parts it would out perform any ported 361.
I would also fit a 660 size carb to this size saw. In my experience the larger saws are restricted by the venturi and intake size.