090 clone porting and building.

[Maintenance Chief]

There was a butt load of unnecessary material in this thing.

 

[Maintenance Chief]

I did widen the bottom of the exhaust port on the inside, but steered clear of the upper part off the port , after a test fit I'll see if maybe I'll want to shave the edge of the piston?

 

[Ronie]

Looking forward to seeing how it runs.

 

[Maintenance Chief]

Factory rings, Cabers are not available as far as I know.

 

[Maintenance Chief]

I think I'll leave the piston alone for now.
Just a shot of the piston leaning on the tillotson to show the sheer massiveness of the piston.
I'm as interested to see how this thing runs as well.
There's not much in between with these saws from what I can find , its either a fire breathing full race build or a beautiful restoration.

 

[Redfin]

Are you prepping for fingers or just bridges? Be mindful of pin locales.

 

[Maintenance Chief]

Are you prepping for fingers or just bridges? Be mindful of pin locales.

I decided not to do fingers in the end.

 

[NightRogue]

They like everything to be hogged.....

 

[Redfin]

I decided not to do fingers in the end.

You should rethink on that. These bigger bores like the added transfer.

 

[Maintenance Chief]

I ran/tuned it this morning. First this thing ,with .020 squish is no joke to start! It idles well and throttles up fast and feels like a bigger 088.
Two hiccups with the first start ,the tiny e-clip rattled out from under the cover ,almost disaster with the decomp! And the end of the recoil spring needed a little more bend.
As with all things scrounged and or used the clutch was slipping due to the tappered sleeve being worn by the previous owner. I reset it but on first fire afterwards it decided to run backwards, hhhmmm I guess thats a thing? Any way got it restarted and the clutch with a copper shim lasted one cut and was loose again.
I'll order another clutch for the sleeve and go from there.

 

[Maintenance Chief]

You should rethink on that. These bigger bores like the added transfer.

My index finger fits in them after opening them up, but maybe after I get a right angle maybe I'll give that a go.

 

[smokey7]

I put my fingers in with a straight shaft

 

[Maintenance Chief]

I put my fingers in with a straight shaft

I considered it, but after running it this morning (even with the problems) I don't think I'll need any more flow . It was surprisingly snappy, with 2and1/4 turns on the high.
After I temporarily get the clutch sorted out I will post a video. New 070 clutch should be here Dec 1-3 . That'll give me time to drill out my old 41" bar for it and find some bigger hardwood.

 

[Maintenance Chief]

As you can see the clutch is just free wheeling, its not really rven trying to grab.
I'm happy with the throttle response and it feels heathy, so ... anxious to put it in some wood.

 

[Maintenance Chief]

@rattler
Got give machinist skills credit due , I couldn't have gotten it running in the first place without some very generous help from the guys who support this forum, with knowledge and talent.

 

[Redfin]

That clutch looks destroyed. Crank snout looks good?

 

[rattler]

@rattler
Got give machinist skills credit due , I couldn't have gotten it running in the first place without some very generous help from the guys who support this forum, with knowledge and talent.

Thank you Chief glad I could help

 

[Maintenance Chief]

That clutch looks destroyed. Crank snout looks good?

Yeah it was probably installed backwards from the get go so it never grabbed the crankshaft enough to score it.

 

[Maintenance Chief]

Still needs a little more tuning and a long bar. I was pretty winded from flooding it.

 

[Lcfd1124]

Still needs a little more tuning and a long bar. I was pretty winded from flooding it.

You know it was to hot to be cutting fire wood today.