bryanr2
Addicted to ArboristSite
Sign me up.In other words, I need one?
Sign me up.In other words, I need one?
I'm done with this saw. It's in a box and leaving in the morning. I'm very happy with the way it runs now.
You already have a 395 though... What would you need with a 661?Sign me up.
I had to get this saw back to it's owner, I'm sure everyone here understands that. I've had it since early December.
If you like spring AV.......this saw is for you. I like the way it handles better than either a 660, or a 395.....
Even stock it blows the doors off of the 660.....
Would you compare it like the jump in tourque from the 460 to a 461 was ,to the 660 to the 661 ?
Here's my spec sheet for the MS661
MS661C-M
Stock:
Ex: 98°
Tr: 123 - 128°
In: 81°
Ported:
Ex: 100°
Tr: 124°
In: 84°
Cut .030 from squish band
Compression: 180psi
Squish: .023
Port shapes play a huge roll in these engines as well Hu. For instance, on many engines I will not lower the intake by grinding. I like to maintain a high case compression in a work saw, so that transfer velocity is as high as possible. That means that the time between the intake port closing, and the transfer ports opening needs to be kept constant between many models, even though transfer heights vary. Lowering the intake, and raising the transfers can kill some models. The MS461 and the MS661 both appear to be this way. In these saws, I alter the shape of the intake, rather than the height to get the time/area I'm needing.
What were the numbers you didn't like in the other cylinder? I think you may have shared them earlier, but hate to dig through 60 pages!Here's my spec sheet for the MS661
MS661C-M
Stock:
Ex: 98°
Tr: 123 - 128°
In: 81°
Ported:
Ex: 100°
Tr: 124°
In: 84°
Cut .030 from squish band
Compression: 180psi
Squish: .023
You are forgetting ... it's only the plating from saws on the oversee market...now which side of the see...Well, maybe Stihl HQ will read this post and solve their damn problems with the 661!
You are forgetting ... it's only the plating from saws on the oversee market...now which side of the see...
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