Author Topic: Stihl 460  (Read 705 times)

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Offline aclarke

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Re: Options for a MS460
« Reply #20 on: April 21, 2016, 09:19:55 am »
Glad you got it going! Did the Hyway come with its own pistonnclearanc well?

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Re: Options for a MS460
« Reply #21 on: April 21, 2016, 10:14:47 am »
Glad you got it going! Did the Hyway come with its own pistonnclearanc well?

When I bought the Cylinder and piston I got it from the guy in Greece and it was sold as a package.   I did not modify any part of the piston or cylinder to get .020" squish with the elimination of the base gasket.    The top of the cylinder was nice and flat looking with no small ridge on the most outer part of the squish band like a I see on some cylinders.    I checked the squish with a piece of solder down the spark plug hole on both sides where the wrist pin is located.   I actually liked the way the squish band looked on the Hyway cylinder.   If I get a chance later I will put a tach on the saw and see where it is revving to at WOT.

I am not sure by what you mean with piston clearance well.
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Offline Cut4fun .

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Re: Options for a MS460
« Reply #22 on: April 21, 2016, 12:50:35 pm »
Glad you got it going! Did the Hyway come with its own pistonnclearanc well?

When I bought the Cylinder and piston I got it from the guy in Greece and it was sold as a package.   I did not modify any part of the piston or cylinder to get .020" squish with the elimination of the base gasket.    The top of the cylinder was nice and flat looking with no small ridge on the most outer part of the squish band like a I see on some cylinders.    I checked the squish with a piece of solder down the spark plug hole on both sides where the wrist pin is located.   I actually liked the way the squish band looked on the Hyway cylinder.   If I get a chance later I will put a tach on the saw and see where it is revving to at WOT.

I am not sure by what you mean with piston clearance well.

I think he is asking about the piston clearance inside the  the cylinder 360 degree around.
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Re: Options for a MS460
« Reply #23 on: April 21, 2016, 09:25:18 pm »
Glad you got it going! Did the Hyway come with its own pistonnclearanc well?

When I bought the Cylinder and piston I got it from the guy in Greece and it was sold as a package.   I did not modify any part of the piston or cylinder to get .020" squish with the elimination of the base gasket.    The top of the cylinder was nice and flat looking with no small ridge on the most outer part of the squish band like a I see on some cylinders.    I checked the squish with a piece of solder down the spark plug hole on both sides where the wrist pin is located.   I actually liked the way the squish band looked on the Hyway cylinder.   If I get a chance later I will put a tach on the saw and see where it is revving to at WOT.

I am not sure by what you mean with piston clearance well.

I think he is asking about the piston clearance inside the  the cylinder 360 degree around.

I never checked that.    So you mean like skirt clearance.   
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Offline aclarke

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Re: Options for a MS460
« Reply #24 on: April 22, 2016, 10:40:38 pm »
sorry guys, didn't  catch the typo, was curious if the jug came with a piston. thanks Adam
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Re: Options for a MS460
« Reply #25 on: April 22, 2016, 11:23:39 pm »
I bought the cylinder and piston as a package deal.    The cylinder was a Hyway the piston was a Meteor the rings Caber.
I measured the ring gap and it looked good.   I also dry fit the piston in the cylinder before installing it and it seemed a nice fit.
The only other measurement I took was the squish.   I did not advance the timing on this saw like I do on most of the saws I mess with.
I should get the tach out and see how it is doing.    Also do a compression test on it.    The compression feels good when starting it.

I can see in the future if I want to open up the upper transfer ports that I should get an angle head for my flex shaft.
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Offline mdavlee .

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Re: Options for a MS460
« Reply #26 on: April 23, 2016, 02:27:02 am »
460 doesn't mind a good advance.

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Re: Options for a MS460
« Reply #27 on: April 23, 2016, 09:28:39 am »
460 doesn't mind a good advance.

Ok Mike.   Did you get my PM.
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Offline mdavlee .

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Re: Options for a MS460
« Reply #28 on: April 23, 2016, 11:12:43 am »
Not on here.

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Re: Options for a MS460
« Reply #29 on: April 23, 2016, 04:30:37 pm »
Ok I will try it again Mike.

So today I put a tach on the saw and checked the compression.   You never know until you actually check them
So the tach at WOT and with a bar chain is at 14,000 to 14,200 rpms.     But the compression is only at 135 psi.    The compression is much lower
than I thought it should be even for it not being broke in and at 6000ft above sea level.    It does not really matter since it is just for cutting up some fire wood and it will do that.   It could be I got a little to free with the grinder.   
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