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ms 461 woods port race thing

Terry Syd

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Here's your first piston wash -
ff52e6f6f52060940800831a7e9c61d3.jpg


And here's this last one for comparison -

dsc01240-jpg.106998


It looks like you may have shifted the primary flow a bit more to the center, but there is still a fair amount of short-circuiting going on. That exhaust port just keeps wanting to pull the intake charge out of it.

When you said "epoxy time", where are you going to add the epoxy?
 

EvilRoySlade

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Odd thought but do you use L and R cutters for the transfers? Without the jug in my hands I’d say there are discrepancies between the sides in shape, volume, angles etc. The whole temp difference is hard to swallow without some experimentation.
 

paragonbuilder

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Odd thought but do you use L and R cutters for the transfers? Without the jug in my hands I’d say there are discrepancies between the sides in shape, volume, angles etc. The whole temp difference is hard to swallow without some experimentation.

My thoughts precisely Roy
 

paragonbuilder

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any thoughts on the pics?

Here's your first piston wash -
ff52e6f6f52060940800831a7e9c61d3.jpg


And here's this last one for comparison -

dsc01240-jpg.106998


It looks like you may have shifted the primary flow a bit more to the center, but there is still a fair amount of short-circuiting going on. That exhaust port just keeps wanting to pull the intake charge out of it.

When you said "epoxy time", where are you going to add the epoxy?

Looks like the flywheel side is aimed upwards more, ie: roof is not as flat, but also Making a quicker exit, bouncing off that bridge
 

tree monkey

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Here's your first piston wash -
ff52e6f6f52060940800831a7e9c61d3.jpg


And here's this last one for comparison -

dsc01240-jpg.106998


It looks like you may have shifted the primary flow a bit more to the center, but there is still a fair amount of short-circuiting going on. That exhaust port just keeps wanting to pull the intake charge out of it.

When you said "epoxy time", where are you going to add the epoxy?

in the back of the primary next to the tr bridge


DSC01222.png
 

EvilRoySlade

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rh cutter only
What’s your PayPal? I’m sending you some $ for L cutters. I’m curious to see if it makes a difference for you.

I don’t want to fund the R&D as much as @Redbull661 but I think a 461 might be the one Stihl I’d be happy to own. So if I can help you out before I go balls deep with a saw that’s good for everyone.
 
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Deets066

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Right, but with diaphragm carbs, if tuned perfectly with no load, they will be lean when loaded typically? No?
Very different from dirt bike and sled carbs I believe.
It's hard to hear any 4 stroke on a saw past 15,500 or 16,000 it's possible that it's there but I can't hear it. That's why I go off of power in the cut and the plug.

Remember when you had my hybrid and I kept telling you to lean it out? I think you finally got it to 15,700
 

paragonbuilder

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It's hard to hear any 4 stroke on a saw past 15,500 or 16,000 it's possible that it's there but I can't hear it. That's why I go off of power in the cut and the plug.

Remember when you had my hybrid and I kept telling you to lean it out? I think you finally got it to 15,700

Yeah,15.8
It was barely perceptible. Do you do plug chops with your saws?


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paragonbuilder

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No, I don't like cuttin the fuel off like that

I thought you could only get good readings from a plug chop? And that is cutting ignition mid cut, not fuel. As long as the motor turns it’s sucking fuel.
Except maybe on the new 500i... [emoji57]


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Deets066

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I thought you could only get good readings from a plug chop? And that is cutting ignition mid cut, not fuel. As long as the motor turns it’s sucking fuel.
Except maybe on the new 500i... [emoji57]


Sent from my iPhone using Tapatalk
If it's still sucking fuel then the plug chop means nothing right?

After a few good cuts I don't see the color changing much
 
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