Stihl 361 Junkyard Zombie Mutant

[Ketchup]

“Runs good.”

 

[Ketchup]

361 stroker hybrid

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...

opeforum.com

I saw this thread. I knew what must be done.

I exhumed the carcass from the grave yard.

A $27 440 clone crank was purchased.

And a $40 460 Big Bore kit.

Then, unspeakable deeds.

 

[Ketchup]

First attempts with the Drill press and rusty end-mill worked, but it turned out the case was cracked at the bearing pocket.

A second grave was robbed of its skeleton. More sophisticated dark rights were performed. A milling machine and indexable boring head are powerful dark magic.



Magnesium is very stringy. Worse than aluminum. Sharp HSS and proper speed are important.

 

[NateSaw]

https://media.tenor.com/9DdkzBqinJkAAAAM/anxious.gif

 

[vrex]

Been waiting on this!

 

[Loony661]

Alright! This looks fun!

 

[Ketchup]

A 54mm slug has some tight spots that need relieved in the case.

 

[Ketchup]

Some more grave digging yielded a viable heart. 066 meteor piston. 0.1” off the skirt, widened the pin bosses for the 440 crank, sculpted and smoothed the ventricles for better blood flow.

 

[Ketchup]

@Woodslasher was nice enough to send me this cylinder from his own chainsaw morgue. Scored FT 460BB. A little sandpaper necromancy brought it back.

 

[Ketchup]

The cylinder involved extensive surgery. Slot the bolt holes, cut grooves for the bolt heads, trim some fins. I drilled the holes through the fins so I could drop the bolts in as well.


I didn’t quite get the slots perfect. You can see where the bolt threads marked the aluminum.

 

[Ketchup]

After the first cylinder surgery I was able to bolt it down and start on the muffler prosthetic. The 460 jug is kicked back farther so the 361 muffler sticks up too far.



Mashing dead bodies back together isn’t pretty.

 

[Ketchup]

Cylinder surgery #2

0.115” off the base, squish set to 0.022” with the stock gasket. Transfers need a lot more volume and the tunnels need to shift towards the exhaust. My surgical assistant, James Bradley Weld, was critical in reshaping the genetically inferior vasculature.

 

[Ketchup]

Uppers open flat, then ramp down three degrees to a steeper angle.

 

[Powerstroke Cowboy]

Nice work Caleb! This should be a fun, light saw.

 

[davidwyby]

Now that’s hotrodding

 

[thompsoncustom]

very cool

 

[Junk Meister]

WOW I wasn't expecting such intriguing content by the thread title.

 

[David Young]

cool project.... 066 cabratater?

 

[Ketchup]

Cylinder surgery #3

Trim the fins down on the lathe, started cutting the space for the AV, made a slot for the cover rubber. I widened the space between the fins and ground the sides off a bolt to make a cover mount. I might change that.

 

[Ketchup]

Fits like sunglasses on a baby.