3120 Spice Up thread

[Brewz]

Getting a micro drill set.
If she is too lean will take it to 1.2
If still to lean, will keep taking a tad from the jet till I get what I want.

I just want it to feed enough fuel to run the saw at 12300 - 12400 RPM

 

[Iron.and.bark]

Just make sure you size to the same fuel ratio as he will be using in it. Otherwise could run lean if he runs 25:1 and you size to 40:1

 

[Brewz]

The carb on my 084 has a 1.04 fixed jet and I need 3/4 turn on the H screw to get the revs down to under 13000 RPM.

This is going to be fun getting it perfect

 

[Brewz]

Just make sure you size to the same fuel ratio as he will be using in it. Otherwise could run lean if he runs 25:1 and you size to 40:1

haha
Now that going to be REALLY interesting.
This bloke is a "pour it in till it looks the right colour" oil mixer.

I will set the jet to 25:1 so less oil will only make it richer which is better than setting the jet to 50:1 and leaning it out running 25:1

 

[Brewz]

New much higher flow @Red97 large baffle and spark screen added
Repaired cracked front mounting point.
Now for some high temp black paint

 

[Brewz]

Lowers opened up

Before:



After:

 

[Brewz]

Belled the exhaust outlet



Squared out the bottom of the intake and widened just a mm or 2 each side



Squish was .010 with no gasket so .014 removed from the band

 

[Brewz]

 

[Red97]

View attachment 49679

That is the reason I leave em unfinished.

That looks great sir. I'm glad you are liking them.

 

[Brewz]

I love them
They make it so easy to make a really good looking job and get better flow

 

[Brewz]

Cylinder is on, pull start overhauled, carb rebuilt, timing advanced .020, coil gap set and all ready to put back together.
I just need to order a new muffler gasket on Monday so it will have to wait till that shows up.

Do you guys recon I should just take the carb H jet out to 1.2mm or try it first.
I am betting it will be lean. This puppy is going to breath!

 

[smokey7]

Try it first and sneak up on it. Buy a set of springs for metering springs or shims. So you can change that after you drill. So drill run switch spring popoff then drill and switch again. I think it won't take much to find a good setup.

 

[hseII]

Glad to help out of you need it. The alerts ain't working real well now though. You might have to message me to get my attention.

You can also Ring His Bell.


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[hseII]

haha
Now that going to be REALLY interesting.
This bloke is a "pour it in till it looks the right colour" oil mixer.

I will set the jet to 25:1 so less oil will only make it richer which is better than setting the jet to 50:1 and leaning it out running 25:1

Teach him to do it the right way.
Show him what doing it wrong causes.

And then show him what it cost to repair once fried.

We have to put $ signs in front of some people to get the message across.


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[Mastermind]

You can also Ring His Bell.


2 Rings & A Flattop, LLC Test Dummy

Step away from my bell please.

 

[hseII]

Step away from my bell please.

No.

I like it when the wind blows too.

Brewz,

I don't own a 3120, but if I did, it would have the modified Carb with the proper # of adjustments.

Watch the above Knucklehead's video on modifying the 3120 carb, & do it to it: I'm already certain you can complete this task.

Me Personally, I would hopefully pay or barter, the afromentioned Knucklehead to do it, but you don't have the luxury of shipping as economically as we do here in the states.

Good Day.


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[mdavlee]

Some of the hot saws are still running without an H screw. If they're only used at one elevation you get it set for cooler temperatures and let it go.

 

[hseII]

Some of the hot saws are still running without an H screw. If they're only used at one elevation you get it set for cooler temperatures and let it go.

I didn't think 1,000ft made that much difference, but an 044 told us it do.

Thank You Andreas for the 1124. [emoji1303][emoji1303]


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[mdavlee]

I didn't think 1,000ft made that much difference, but an 044 told us it do.

Thank You Andreas for the 1124. [emoji1303][emoji1303]


2 Rings & A Flattop, LLC Test Dummy

Yep. There's more than 1k from my place to Randy's

 

[hseII]

Yep. There's more than 1k from my place to Randy's

Right at 1k from my house to the west side of T-town too.


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