It's here!!!!............Inside the MS661
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KG441c
Keith
Ok thanks. What about modding the factory standard oiler?
That could be done also. I think I have a 1122 oiler here I'll look at later.
So the "R" in the 660R gets you the wrap handle and an H.O. oiler, among other things. Does the 661R actually get you an H.O. oiler or is it assumed that it does just because it did on the 660? I ask because I am about to buy a 661 and if the "R" get the H.O. oiler, that is what I will be buying.
I find it very interesting that the 661 has disappeared from the stihl USA site. Makes me wonder if they are having problems with them again. I hope not! I've been waiting what feels like an eternity for them to be released again.
Dont loose sleep over it. The website has a reputation for being wrong....
I'm porting another MS661 this evening. Here's the port work laid out.
Exhaust. Those are the piston skirt edges that are marked, so no widening here. I'm also not changing port timing. All the exhaust will get is a little cleanup/polishing work.
Here's the intake port. It will be widening, but no port timing change again. It will be raised just a hair, due to lowering the jug .045".
Here you can see how much angle is put on the factory transfer ports. I make them level with the highest point, no higher.
Here's a pic showing how I use the ring to mark my port heights.
Exhaust. Those are the piston skirt edges that are marked, so no widening here. I'm also not changing port timing. All the exhaust will get is a little cleanup/polishing work.
Here's the intake port. It will be widening, but no port timing change again. It will be raised just a hair, due to lowering the jug .045".
Here you can see how much angle is put on the factory transfer ports. I make them level with the highest point, no higher.
Here's a pic showing how I use the ring to mark my port heights.
Those edges sure do look rough. That's from the factory right?I'm porting another MS661 this evening. Here's the port work laid out.
Exhaust. Those are the piston skirt edges that are marked, so no widening here. I'm also not changing port timing. All the exhaust will get is a little cleanup/polishing work.
Here's the intake port. It will be widening, but no port timing change again. It will be raised just a hair, due to lowering the jug .045".
Here you can see how much angle is put on the factory transfer ports. I make them level with the highest point, no higher.
Here's a pic showing how I use the ring to mark my port heights.
KG441c
Keith
Thats what I was thinkin also! The casting inside the ports look rough? Brad is the .045 with deletion of gasket or cut with gasket left in?
DarthTater
Keep Calm & Carry a Chainsaw
Normal for Factory Parts, They do as little to them as possible to get the final product out the door.
KG441c
Keith
I can say the kolben schmidt on the 262xp I just ported wasnt rough like that at all. They were clean with nice beveled edges
Wouldn't that roughness affect the flow in some way?
Stihl working hard
Is it Friday yet
Mark will be happy with that BradI'm porting another MS661 this evening. Here's the port work laid out.
Exhaust. Those are the piston skirt edges that are marked, so no widening here. I'm also not changing port timing. All the exhaust will get is a little cleanup/polishing work.
Here's the intake port. It will be widening, but no port timing change again. It will be raised just a hair, due to lowering the jug .045".
Here you can see how much angle is put on the factory transfer ports. I make them level with the highest point, no higher.
Here's a pic showing how I use the ring to mark my port heights.
KG441c
Keith
The exhaust is all thats polished from my understanding. The intake and transfers stay roughed up alil for fuel mixture but not that rough !! Is that right Brad?
Macro photography is not kind. These pics make it look much worse than it is.
Besides, they don't look like that now
Mike from Maine
Read that the ms362 is awesome!!!
Did you get a comparison video of stock vs ported?
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