What's on your bench?

[huskihl]

Whatever a 9x19 turns with the little belt in the slow spot. Probably around 300rpm

Just checked

120rpm

 

[CJ Brown]

Great info guys. It gives me a good starting point to attempt my first band cut. I assume if I cut a couple thousandths into the cylinder wall that is better than leaving a slight ridge at the edge of the band? Assuming the top ring will be below the cut. I aim for perfection but am far from perfect.

 

[huskihl]

Great info guys. It gives me a good starting point to attempt my first band cut. I assume if I cut a couple thousandths into the cylinder wall that is better than leaving a slight ridge at the edge of the band? Assuming the top ring will be below the cut. I aim for perfection but am far from perfect.

That would be correct. Don’t start with a cylinder that has a plated band. 562 is probably the worst other than a meteor or hiway.

Once you get the cylinder true, I bring my boring bar up to the edge of the plating out near the base so it’s easy to see. Set it at zero, move the bar away from the plating one full turn and then go up and zero your other slide at the squish band. Back away from the squish band 1MM or so, then re-zero your boring bar to the plating. The plating will squeal when you touch it lightly to let you know you are there.

 

[Mastermind]

I find the plating, and the top of bore by ear. Can't see up in there very well....so I turn the spindle by hand and just listen.

 

[Woodslasher]

I dug into my MS660 last night, she's a bit rough. I knew it had busted case and a cracked clutch cover, but she had a few other hidden scars. The piston crack I almost didn't notice, she had plenty of compression and traces of the original machine marks so I thought it was in good shape until I noticed a hair that wasn't wiping off was a hairline crack. The exhaust flange was pretty hammered from running it with no gasket, but I think I got it flat enough. Inside the jug the plating above the exhaust port looked like it had peeled off for 1/32", but there weren't any signs of it meeting the piston. So, I did a "port job" and raised the exhaust till it got up next to the plating, then I beveled it and (hopefully) got rid of all the edges a ring might catch.

 

[cowroy]

I snagged this yesterday. Story was it needed a carb and I thought that was a stretch knowing how new these are to the market. Turns out the spark plug threads are stripped. Can anyone help with the Helicoil kit I need for the NGK CMR6H size spark plug? I tried to figure it out on the NGK website and the rest of the internets, but I’ve never owned a saw with this little thread plug. Thanks fellas!

 

[farminkarman]

I snagged this yesterday. Story was it needed a carb and I thought that was a stretch knowing how new these are to the market. Turns out the spark plug threads are stripped. Can anyone help with the Helicoil kit I need for the NGK CMR6H size spark plug? I tried to figure it out on the NGK website and the rest of the internets, but I’ve never owned a saw with this little thread plug. Thanks fellas!

I take it that saw uses the 10mm plug threads? If so, it might be worth having the hole redrilled & tapped for 14mm.

 

[Johnmn]

I snagged this yesterday. Story was it needed a carb and I thought that was a stretch knowing how new these are to the market. Turns out the spark plug threads are stripped. Can anyone help with the Helicoil kit I need for the NGK CMR6H size spark plug? I tried to figure it out on the NGK website and the rest of the internets, but I’ve never owned a saw with this little thread plug. Thanks fellas!

I take it that saw uses the 10mm plug threads? If so, it might be worth having the hole redrilled & tapped for 14mm.

@srcarr52

 

[cowroy]

I take it that saw uses the 10mm plug threads? If so, it might be worth having the hole redrilled & tapped for 14mm.

That is definitely an option but I’d like to try the helicoil for the 10mm size first.

 

[huskihl]

I believe the thread engagement on 10MM plugs is longer. So the 14MM plug wouldn’t protrude into the combustion chamber. Regardless, I don’t think a helicoil is going to last. I would send it to Shaun Carr and have it welded and re-tapped.

But I’d probably try and secure the plug in it the way it is and try getting it running first so you’re not throwing money into a saw that may have multiple other issues

 

[cowroy]

I’d probably try and secure the plug in it the way it is and try getting it running first so you’re not throwing money into a saw that may have multiple other issues

I wish that were an option. It’s like throwing a hotdog down a hallway it’s so stripped.

 

[Agent Smith]

If there's enough washer surface and enough meat to to just drill and tap the hole to m14x1.25 and run a BPMR6A plug? The length difference seems negligible. Just throwing it out there. Never had a 400 in front of me so idk

 

[Maintenance Chief]

I personally have never had any lasting luck with heli coils in saws, (time serts ;yes) once your into a 100.00 insert I'd rather have it welded.

 

[farminkarman]

Got the squish cut on the 6100 cylinder. Being that the saw doesn’t have a decomp, I only took 0.035” from the band.

 

[srcarr52]

I snagged this yesterday. Story was it needed a carb and I thought that was a stretch knowing how new these are to the market. Turns out the spark plug threads are stripped. Can anyone help with the Helicoil kit I need for the NGK CMR6H size spark plug? I tried to figure it out on the NGK website and the rest of the internets, but I’ve never owned a saw with this little thread plug. Thanks fellas!

10mmx1.0 helicoil works well. The threads are fine enough the OD of the coil is smaller than the sealing washer.

 

[cowroy]

10mmx1.0 helicoil works well. The threads are fine enough the OD of the coil is smaller than the sealing washer.

Thanks man! I had to at least try a helicoil. Being fully aware they are not ideal for a chainsaw spark plug application all the time. If it doesn’t work I’ll just rebuild it and sell.

 

[bulletpruf]

7.3 International IDI crankshaft for a redneck polish with a shoelace and three iterations of sandpaper (600/1000/1500) followed by Mothers metal polish.

 

[Paul Fithian]

New ported G660 and Alaskan mill

 

[nbbt]

Gettin back to a project started last fall. Pulled out of storage, now in my on deck spot for tinkerings/projects.
Last fall did a cleanup on it and did a road trip to acquire a muffler and pick up some first hand knowledge on this model.
Early next week I hope to be hearing it singing. My in town neighbors will appreciate me I bet!!!!

 

[Canadian farm boy]