Real talk about saw porting theory (no arguments)

[Mastermind]

removed a massive amount of intake port material

Find another jug.

 

[Moparmyway]

removed a massive amount of intake port material and no head gasket. Runs great but I’d like a little bit more power cuz it seems to bog easy. Or did I do something stupid???

Did you take pictures of your work ?

 

[Love it Stihl]

No unfortunately. I don’t believe I changed timing. I couldn’t stick my lil fingers in there before and after I could put the end of my thumb in. Just to give an idea.

 

[MustangMike]

If you have done that already, I would give it a timing advance. May be your ignition timing is no longer in sync with your port timing. Sometimes, just opening up the muffler requires a change in ignition timing.

I would want to know where your #s currently are before trying to figure where they should be, unless you plan to machine the jug.

Often, lowering the intake a bit can help quite a bit, but it would be good to know where you are at before doing anything. Your blow down # is also important (instead of just defined #s for Ex + Tr).

Little changes can make a big difference. I would not junk the cylinder just yet.

 

[Love it Stihl]

Ok I’ll check them soon as I get my timing wheel together.

 

[Stump Shot]

Mastermind's assessment is correct.

 

[Adirondackstihl]

I don’t think the carb can handle enlarging the choked up intake. You lose a chit ton of velocity.
I’ve done this. Not a great idea

 

[Adirondackstihl]

See.......

 

[Mastermind]

Mastermind's assessment is correct.

Maybe not.....I'd like to see some pictures. But anytime I hear "I took a chit ton out" I figure it's fubared.

 

[Stump Shot]

Maybe not.....I'd like to see some pictures. But anytime I hear "I took a chit ton out" I figure it's fubared.

I as well, carb cant give off fuel without enough pull going through it.

 

[Adirondackstihl]

I will add that when I did mine, I only matched the intake to the boot. I did not go near the cylinder wall.

 

[Mastermind]

I will add that when I did mine, I only matched the intake to the boot. I did not go near the cylinder wall.

Made it boggy?

 

[Adirondackstihl]

Made it boggy?

Not exactly “boggy”.
It had great throttle response.
Just no azz

 

[Love it Stihl]

Not exactly “boggy”.
It had great throttle response.
Just no azz

That’s a better explanation of how mine is.

 

[Adirondackstihl]

That’s a better explanation of how mine is.

Find a new jug or you’ll be forever trying to chase gremlins in a saw that really isn’t worth fackin with

 

[Love it Stihl]

Ok you’re going to have to help me. There a thousand ways to get numbers. What numbers do you want and how do I get them? Is it duration or port opening or closing? I’ve searched how to get timing numbers bet don’t get the answer I want. I don’t know how to find ###/###/###. As you can see I’m confused. If there’s a thread for that point me to it. Thanks

 

[Mastermind]

Ok you’re going to have to help me. There a thousand ways to get numbers. What numbers do you want and how do I get them? Is it duration or port opening or closing? I’ve searched how to get timing numbers bet don’t get the answer I want. I don’t know how to find ###/###/###. As you can see I’m confused. If there’s a thread for that point me to it. Thanks

I find TDC with a piston stop, then get my opening points from TDC.

 

[Adirondackstihl]

 

[Moparmyway]

1. May be your ignition timing is no longer in sync with your port timing. Sometimes, just opening up the muffler requires a change in ignition timing.
2. Your blow down # is also important (instead of just defined #s for Ex + Tr).

1. Please elaborate ...............
2. What ?

 

[Lightning Performance]

Made it boggy?

I thought the same thing. He must be lean down low or has poor atomization now. JB Weld will fix it.