Building the ultimate sleeper saw.... 46cc Craftsman into a ported 72cc

[Arrowhead]

Once I got the jug to fit, I set up the degree wheel to check the timing.

 

[outdoorlivin247]

opcorn:

 

[Arrowhead]

Piston looks a little big.

 

[moody]

Saws like this make my sticker peck out opcorn:

 

[joe25DA]

Wow. cant wait to see the finished product! I think the saw was actually 49cc though.

 

[brokenbudget]

so the pin is the same diameter? what about piston/case clearance?:msp_thumbsup:

 

[brokenbudget]

Wow. cant wait to see the finished product! I think the saw as actually 49cc though.

if it was a 2.8, it's 46cc

 

[Big_Wood]

i need to see more ....opcorn:

 

[northwoods18]

great job!!! can't wait to see the video of that thing eat wood:yourock:...

 

[Arrowhead]

Wow. cant wait to see the finished product! I think the saw as actually 49cc though.

Same as the 2800... 46cc.

so the pin is the same diameter? what about piston/case clearance?:msp_thumbsup:

It's coming. :msp_wink:

 

[rwoods]

Sure beats any of my sleeper ideas. Very cool. Ron

 

[Arrowhead]

Porting Pics compared to a stock 038 Mag jug.

 

[Arrowhead]

Dang Ed, you got it done quick! I didnt think it was going to show its face here for a while yet though.

I can understand your excitement, I'm excited too! I think I can get over the week after next to get my hands on it!

Sounds good. I should have it broke in by then.

 

[Arrowhead]

The piston had a 12mm pin and the rod had a 10mm pin. We made bushings from Ampco Brass on the lathe... basically a brass with the hardness of a mild steel. They fit nice and snug. I had to trim some off the piston skirts to clear the deck of the saw. I have .030 clearance. I opted to do this rather than relieve the case, to lighten the piston some. There is still plenty skirt not to freeport.

I trimmed more than this, this was just a start.

 

[Arrowhead]

Piston before and after...

 

[axlr8]

VIdeo needed.

 

[tomdcoker]

Piston before and after...

Looks very good Ed. I am waiting on a video. Tom

 

[Arrowhead]

The rod has the same width as the 038 Mag so the piston was a perfect fit.

 

[Arrowhead]

Rest of the pics tomorrow Gents. My Son started a download on his PS3, so loading pics will be almost impossible. I'll let them load overnight.
Plus I'm tired.

 

[3000 FPS]

I am very impressed with the work so far and your vision for doing such a Mod. It shows your over all knowlege of many different brands of saws and your skills as a mechanic and machinist. I like it.

I tried to rep you but I have to spread some around.