It's here!!!!............Inside the MS661

[stihlaficionado]

Baby pics for the scrapbook

 

[KG441c]

Besides, they don't look like that now

What grit do u sand the intake and transfers Brad?

 

[blsnelling]

What grit do u sand the intake and transfers Brad?

I'm able to achieve that finish with a double cut carbide burr, grease, and a real light touch. I'll bevel the edges yet, but that's the final finish inside the port.

 

[KG441c]

I'm able to achieve that finish with a double cut carbide burr, grease, and a real light touch. I'll bevel the edges yet, but that's the final finish inside the port.

Brad would u mind posting a pic of the burr??

 

[Stihl working hard]

Baby pics for the scrapbook

Nice one

 

[Stihl working hard]

I'm able to achieve that finish with a double cut carbide burr, grease, and a real light touch. I'll bevel the edges yet, but that's the final finish inside the port.

The jug looks awesome Brad nice job

 

[blsnelling]

Here's the finished product.

This is the factory bevel here, just touched up a little in the corners.

Polished with an abrasive impregnated rubber thingamahicky, lol.

I clean up the piston windows just a bit, removing casting flash and angling just a little.

 

[blsnelling]

Here's the burr that I use in the transfers.

In this pic, it's loaded with grease from my final grinding.

Here I simply wiped it off with a rag. The grease completely keeps it from loading up.

 

[KG441c]

Here's the burr that I use in the transfers.

In this pic, it's loaded with grease from my final grinding.

Here I simply wiped it off with a rag. The grease completely keeps it from loading up.

Do u get the burr from cc specialities? What kinda grease?

 

[stihlaficionado]

Here's the burr that I use in the transfers.

In this pic, it's loaded with grease from my final grinding.

Here I simply wiped it off with a rag. The grease completely keeps it from loading up.

Looks like something my dentist would use

 

[DarthTater]

Besides, they don't look like that now

That's some fine work there.[emoji106] [emoji41]

 

[Four Paws]

Here's the finished product.

that intake port is HUGE. Nice shape.

 

[Stihl working hard]

Looks like something my dentist would use

Probably is looks almost familiar

 

[blsnelling]

Do u get the burr from cc specialities? What kinda grease?

I don't even remember. It may have been McMaster Carr.

 

[blsnelling]

MS661 #2 is all back together, recalibrated, and ready for wood.

 

[rich450es]

is it a decrease in weight thing or OCD kicking in, cleaning up the piston

 

[blsnelling]

is it a decrease in weight thing or OCD kicking in, cleaning up the piston

I didn't remove enough material to reduce the weight any measurable amount. It's just part of what I do. There's usually a little ridge around the window from the casting process.

 

[porsche965]

Does the 660 have a windowed piston? Thanks.

 

[blsnelling]

Does the 660 have a windowed piston? Thanks.

It does, almost identical to this one.

 

[windthrown]

Looks like something my dentist would use

Nggggggaaaaaaaaaaahhhhhhhhhh!!!!!!!!!!!