026 Build for “A Dirty Old Feta”

[drf256]

This is a build for @AlfA01.

For shipment savings, the jug/slug are being sent in lieu of an assembled saw. Not my usual SOP, but this is international and Dan is a great fellow.

This one is a hybrid of the racier one I recently did for DD (which never ran at Randy's) and my standard hopped up 026 worker. Dan wanted something Spicey, so we decided on this.

The jug is a late model 026 44mm decomp jug without the decomp drilled. The piston is a 246 Husky piston.

Yes, the only way to make a Stihl very fast is to add a Husky part to it. SORRY JEFF.

@RI Chevy

 

[drf256]

The 246 piston use requires .050 cut off the skirts for crank clearance and the inner bosses relieved to fit the larger 026 small rod end.

The cylinder base does get kinda thin using this piston, but it’s lighter than an 026 piston and has a single 1.4mm ring with a pin centered over the intake port. The pin and ring stay at least 60% tucked under the not so nice Stihl factory intake roof. Fingers are doable, and the skirts allow for a much larger port than 026 skirts do.

I’m not so sure how much the fingers are adding, but Dan wanted them, so they were added.

The skirt was lathe trimmed. The bosses done by hand as I don’t have a working mill.

 

[drf256]

Here’s a standard 026 ex port traced on the used piston and the finished port traced on a POS golf builder piston. An 026 slug will not allow this width. With the 246 slug, one can get over 75% bore width if wanted. An 026 slug maxes out around 60-65%.

 

[drf256]

And jug pics, of course. No particular order.

The band was cut by lathe. I used a hand mandrel cutter to trim off a slight ridge I thought I had, hence the small chops in the band which will not affect performance.

Squish is about .017 and compression should be around 220psi finished.

You’ll have to wait a bit for this thread to end, as Dan will be assembling this saw in Greece and we are still waiting on some parts to ship there.

 

[drf256]

Meteor 026 with .045 milled flat off crown vs Standard 246 with stock skirt ^^^

 

[drf256]

 

[drf256]

Ugly intake roof is factory and tucks ring and pin, so it needs to stay as ugly as it was born.

 

[Fruecrue]

Looking good Doc.

 

[drf256]

 

[drf256]

Looking good Doc.

Thanks Dave, I’m trying.

Only 6 beers were killed to make this build possible.

 

[AlfA01]

This is AWESOME. Can't thank Doc Al @drf256 enough for taking on this build project.

 

[Fruecrue]

Only 6 beers were killed to make this build possible.

Try harder next time.

 

[drf256]

Try harder next time.

I’m not a quitter. Not yet at least, but getting close.

 

[Dub11]

Thanks Dave, I’m trying.

Only 6 beers were killed to make this build possible.

Cant drink all day if you dont start in the morning!

Awesome build sir

 

[Fruecrue]

Cant drink all day if you dont start in the morning!

Awesome build sir
View attachment 145375

Good Morning Wayne, how’s Momma and baby?

 

[Dub11]

Good Morning Wayne, how’s Momma and baby?

Baby is doing great and momma is finally feeling better I can tell cuz the ring in my ear has subsided.

 

[huskyboy]

 

[XP_Slinger]

Great looking build Al. Looking forward to final assembly by Olive Oil...lol

 

[huskyboy]

I’m hungry already thinking about docs food ...

 

[AlfA01]

Great looking build Al. Looking forward to final assembly by Olive Oil...lol

Lol. It won't be right away , but worth the wait.