661R Fever ...it's here!!!

[singinwoodwackr]

So, it seems that the only muffler mod being done on these is to open up the one port a little...no added 2nd port.
comments?

 

[maulhead]

And for that matter, you need a PORTED 661

a guy just cant be happy with a 661,,, now he got have it ported also

I PM'd you about some part #'s

 

[blsnelling]

I PM'd you about some part #'s

Better send again. I don't see it.

 

[maulhead]

Ok, I will in a few hours, I have to go somewhere in a minute,,,

 

[Coro cutter]

You gotta have 1 or 2 or 3 haha.........


Sent from my iPhone using Tapatalk

 

[singinwoodwackr]

I think the only real viable options are

1. widen the stock port
2. fabricate a deflector that will fit on the other side and put a hole in. Will be a total experiment though as if it'll work or not. No one has done it yet that I know of.

MM's thread shows just opening up the OE port...don't know about other builders here yet.

 

[blsnelling]

MM's thread shows just opening up the OE port...don't know about other builders here yet.

That's all I did as well.

 

[singinwoodwackr]

That's all I did as well.

any idea on the gains from just the MM?

 

[blsnelling]

any idea on the gains from just the MM?

Likely very little. These saws are not choked up like we're used to.

 

[treesmith]

So whats your opinion Brad? Stock/ported v 660/390

 

[singinwoodwackr]

any opinions as to whether or not porting is worth it?

 

[jeepyfz450]

I just ran a smittybilt ported 661 and she sure was a beast. First tank of fuel none the less. Very good torque and rpm

 

[Dave4610]

I'm still getting the run around on a 661R. My brother ordered me one in Cypress, Texas on the 27th and was told it would be in on 29th or 30th at the latest. I called late on the 30th to check and was told that Stihl is closed till the 2nd, so it won't even be ordered from the distribution center till then. Which means the 5th at the earliest for arrival at the dealer. Then it will take 4days for shipment from Texas to Indiana. So, it's looking like the 9th at the earliest. I'm sad ..... Dang holidays, always slowing everything down!

 

[Coro cutter]

B

I'm still getting the run around on a 661R. My brother ordered me one in Cypress, Texas on the 27th and was told it would be in on 29th or 30th at the latest. I called late on the 30th to check and was told that Stihl is closed till the 2nd, so it won't even be ordered from the distribution center till then. Which means the 5th at the earliest for arrival at the dealer. Then it will take 4days for shipment from Texas to Indiana. So, it's looking like the 9th at the earliest. I'm sad ..... Dang holidays, always slowing everything down!

Bugger that's gotta suck you be champin at the bit ...
Awaiting the arrival of 661r

 

[gunnusmc03]

I think the only real viable options are

1. widen the stock port
2. fabricate a deflector that will fit on the other side and put a hole in. Will be a total experiment though as if it'll work or not. No one has done it yet that I know of.

Ive seen guys cut a port in the muffler front cover and then add a side facing exhaust deflector.

 

[redbull660]

my 404 presets showed up today so I'm making some headway on my 404 vs 3/8 project... will be using the 661 as the test saw


28" tsumura with a 404 tip

3 types of chains - Stihl 404 RS, 2 experimental chains..

middle chain - take a Stihl 404 RS, break it at every 5th DL alternating between cutter and tie strap taken out. Then put it back together so it's a half skip. Probably have 4hrs and 2 bags of presets into it. I need help I know. lol

bottom chain - take a Stihl 404 RS, grind off every 3rd cutter - you basically get 2 cutters (Left and Right) followed by two open Drive lengths. I call it a Double Skip. heh

I also made the same 3 chains in 3/8ths ...well i'm working on the half skip. i need more presets.

close up of the half skip

close up of the double skip - nice grind job. Special thanks to Big T Double

3/8ths vs 404 404 is huge but I'm betting the 661 has the balls!

 

[mdavlee]

That's a lot of time in making chains. Almost as bad as working on a chain for a race.

 

[blsnelling]

any opinions as to whether or not porting is worth it?

Absolutely. Just listen to the difference in RPMs it's holding in the cut.

 

[blsnelling]

So whats your opinion Brad? Stock/ported v 660/390

Speed goes to the 390, with a torque advantage to the 661.

 

[singinwoodwackr]

Absolutely. Just listen to the difference in RPMs it's holding in the cut.

thanks. my local Stihl shop has the Rs...askin $1190 +tx with a 28...getting very tempted
I've had my 066 since '92...might be time for a new one