Old Stihl 044???

[Brewz]

Sweet, that gives me some base numbers to check against.

I might fire it up in the garage for a bit of piss revving later on and see what it will do.

 

[Brewz]

kids at school and wife out shopping, I fired it up and tuned it in the garage.
got a nice little burble at 14100 coming back from full lean.

Took it out the back yard, threw a chunk of dry hardwood on the lawn and gave it a run

Goes good!

 

[Brewz]

Plans are afoot for a bit of 044/066 racing.
I recon its going to make my 066 a bit nervous, its a cracking little saw!

 

[Brewz]

I just fitted my 066 red light up with a 20" bar and 50% worn full chisel chain, the same as is on the 044
I sharpened them both with the same 13/64th file to be razor sharp
Set all the rakers to .025 on both
Both saws are running a 7 pin sprocket.
Both saws have near identical dual port muffler mods
Both saws have had a small amount of port tidy up with no timing mods.
The 066 is running OEM piston, rings and gasket with .020 squish, the 044 has an aftermarket piston and had its gasket removed and .012 sanded from the base to drop squish to 0.020, so its been dropped about .032
The 066 has 160 psi, the 044 has 162psi

I dont know if I can pick which one will win, having used both.

The 066 has more power/torque but the 044 has more chain speed with the higher RPM.

I am picking they will run close with the 20" bar but the 066 will shine with 30"+ bolted on and buried tip deep in hardwood. Problem is I dont have any big timber to try it in at the moment.

 

[VinceGU05]

Yup the extra 20cc will prevail with a 32+" bar on for sure. Even the 066 won't bog like the 044 did in that clip with same bar and chain. Could go to 30 thou on the rakers too. The 066 will love that, the 044 not so much [emoji12][emoji1360]

 

[Brewz]

I pushed a bit harder each cut in the video.
The 3rd cut I was really leaning on it and when I dogged it in a bit it stalled

I am going to try riching it up on the H, bring the RPM's down to 13800 to see if a touch more fuel gives better torque.

I might fit an 8 pin to the 066 to make sure it wins

 

[MustangMike]

Those 044s perform real well for their weight, and for a lot of cutting, you don't need anything more!

 

[Brewz]

Decided to check the timing numbers on the 044 today

Ex- 105
Tx- 121
In- 72

Good numbers me think!

While i was looking in the motor I noticed some marks on the piston top

They looked like little pot holes

Not good!!!

The jug came off and I found this







Looks like something got in or was left in the motor when I put it together and did some damage

I am filthy about it.

Now I can sand the piston top smooth easy enough but I would love some advice on what I should do with the potholed squish band

 

[drf256]

Sand the high spots smooth with adhesive backed sandpaper on an old piston.

That's fugly.

 

[Brewz]

All good
I took the high points off the piston with a smooth file and sanded smooth again.
Smoothed out the corners and made it all nice again.

I used a small scraper to take the high points off the squish band without altering its depth and then lightly sanded it smooth.

Put it back together and fired her up and it runs fine so problem overted.

I made sure the entire thing was washed out many times with petrol and nothing came out

 

[MustangMike]

Check that you have both piston clips. The 10 mm saws were known to spit them now & then, my 044#2 had spit one, but continued to run just fine. Randy found it when he pulled it apart.

 

[chilipeppermaniac]

Oh, forgot to add

My tank breather wouldn't breath, so I made another by pushing the grub screws in in stead of screwing them in.

I put a bit of WD-40 down the line first to help them slide in

Works a treat now!

Brews, and anyone who sees this pic and knows these saws, I am curious about the breather hose and grub screws. Is there a spring between the screw and the plastic nipple? Also, I have seen this part look a bit differently too.



VS. See how this version has a plastic end on the far end and apparently a spring with no grub screws in between.

My 044 snapped the tube off and this was the first I saw the grub screw style.

 

[Stump Shot]

A simple tank vent from Echo can be utilized successfully in leu of the grub screws with the addition of just a tad bit longer fuel line to allow it to hang upside down in the area made for it.
https://www.hlsproparts.com/product-p/a356000031.htm

 

[chilipeppermaniac]

A simple tank vent from Echo can be utilized successfully in leu of the grub screws with the addition of just a tad bit longer fuel line to allow it to hang upside down in the area made for it.
https://www.hlsproparts.com/product-p/a356000031.htm
View attachment 459536

Thanks Stump Shot. I can see how one could do that, but I am new to the 044 and Stihl's various tank vents. I understand the basics of the grub screws in the tubing design, but I was curious because of seeing at least 2 type with the snorkel nipple style vented hoses with or without grub screw like in the 2nd pic I posted above.

 

[hacskaroly]

I am curious about the breather hose and grub screws. Is there a spring between the screw and the plastic nipple?

I had to replace the vent tube on my 066 (original melted in a fire), ended up ordering 6 grub screws and inserted two in the vent tube (4 for the stock pile). They work great without any spring, but I think you have several options to choose from - unless you are trying to get your saw to look like it just rolled off the factory showroom floor

I am guessing the spring is mostly to help keep the vent line from collapsing or pinching in a bend - giving some rigidity to the line.

 

[chilipeppermaniac]

I had to replace the vent tube on my 066 (original melted in a fire), ended up ordering 6 grub screws and inserted two in the vent tube (4 for the stock pile). They work great without any spring, but I think you have several options to choose from - unless you are trying to get your saw to look like it just rolled off the factory showroom floor

I am guessing the spring is mostly to help keep the vent line from collapsing or pinching in a bend - giving some rigidity to the line.

In my case, I was disassembling my handle/ air box/ throttle linkage to remove the carb, when the saw fell off my dirtbike seat I had set it on. It landed on the wooden ramp at the back of my trailer and the vent tube snapped off. When I picked up the tube and saw, I saw that it was not just an unobstructed tube, but had the 2 grub screws. IF it had a spring in the tubing it flew away and there is no way to have known if it ever had one until I came and found this thread. It makes sense now. Much like springs inside radiator hoses. I can see some easy way of replacing a spring if I really run into the tubing collapsing issue. One could likely rob one off a ball point pen. I will cut out the old grub screws and fab up a vent using the proper sized ID tubing from some of the fuel line that I have on hand.

Now I am waiting for my OEM Stihl ZAMA carb rebuild kits to arrive. Part number 0000 007 1080 for my Zama C3M S5E carb