Opinions invited...which 044/440/460 cylinder??

[S&S_Work_Saws]

So I recently acquired a really clean all OEM MS440. Someone had straight gassed the thing and the owner didn't want to pay for repairs and let me buy it for parts.
I've started digging through my 1128 OEM cylinders to get this saw back to its former glory.
Now comes the part I need some opinions on...in my cylinder pile I found an original MS440 cylinder. I also have a very nice MS460 cylinder. It's a little more work to get on the saw but I can do it if it's the best cylinder.
And finally I have a slant fin 10mm 044 cylinder. Which is the best cylinder?? I've been looking at it for 2 or 3 days and can't make up my mind.

I should also add whichever cylinder I use will be milled and ported before install.

Which ever cylinder ends up being used will be mated with a Meteor piston.

 

[huskihl]

440<044<460

But not a huge difference either way, especially in the first 2

 

[S&S_Work_Saws]

440<044<460

But not a huge difference either way, especially in the first 2

So if I'm understanding this correctly what your saying is the performance differences between a slant fin 10mm 044 cylinder and an MS440 cylinder are minimal?? I always thought every slant fin saw I had ever owned ran better then any 440 I had used. Then again maybe that was all in my head.

 

[Ketchup]

460 is just a bigger jug so you get more boom. That’s what I would want.

Is the 460 a Hemisphere or D chamber?

 

[Canadian farm boy]

After a good port job there’s almost no difference between the 044/440 jugs. The ported 046/460 jug on a 044/440 chassis imo is the best bang for the buck and will easily outperform the others

 

[S&S_Work_Saws]

All of the cylinders I've got are the big hemisphere type combustion chamber...except 2. I have two that are OEM 044 that have the tight D shaped chamber in them

 

[huskihl]

So if I'm understanding this correctly what you’re saying is the performance differences between a slant fin 10mm 044 cylinder and an MS440 cylinder are minimal?? I always thought every slant fin saw I had ever owned ran better then any 440 I had used. Then again maybe that was all in my head.

There’s a difference yeah. But not earth shattering. The 440 would be known as a turd like the 660 if there was that much difference.

 

[huskihl]

All of the cylinders I've got are the big hemisphere type combustion chamber...except 2. I have two that are OEM 044 that have the tight D shaped chamber in them

All 044 are D chambers. Early 046 are as well. Later 046/460 are hemi

 

[huskihl]

After a good port job there’s almost no difference between the 044/440 jugs. The ported 046/460 jug on a 044/440 chassis imo is the best bang for the buck and will easily outperform the others

Exactly

 

[S&S_Work_Saws]

I never knew this about the 044 all being D. I learned something new today. So basically pick my best 460 jug and get it on there. Will a big bore 044 piston work in theb460 cylinder or will it have to be a 460 piston?? I would think the big bore piston would work but not sure

 

[Canadian farm boy]

I never knew this about the 044 all being D. I learned something new today. So basically pick my best 460 jug and get it on there. Will a big bore 044 piston work in theb460 cylinder or will it have to be a 460 piston?? I would think the big bore piston would work but not sure

Don’t mess around with a Chinese BB 044 piston. If for no other reason the quality just isn’t there especially if you’re going to port the cylinder. Oem or meteor with caber rings is the way to go.

 

[S&S_Work_Saws]

Don’t mess around with a Chinese BB 044 piston. If for no other reason the quality just isn’t there especially if you’re going to port the cylinder. Oem or meteor with caber rings is the way to go.

The only reason I'll use a cheap piston is if I'm going to do some experimenting with something new and don't want to waste a good piston. Chinese pistons have been my go to for a long time if I have a theory about trimming an intake side skirt or grinding different stuff into open windows.
I always use OEM or in its going to be aftermarket meteor is the only way I'll go.

 

[S&S_Work_Saws]

I was simply asking if the 2 pistons are the same?? I assume they are. I don't see anything that would be different between a 12mm wrist pin 044/440 big bore piston and a standard 460 piston.

 

[Rich Fife]

An 044 case, with a 272xp piston and a 460 cylinder run strong.

 

[S&S_Work_Saws]

An 044 case, with a 272xp piston and a 460 cylinder run strong.

The 272 piston surely isn't a direct fit?? Probably some skirt trimming on the intake side or milling a little off the top. I've never attempted to put a husky piston into anything but a husky

 

[Rich Fife]

The 272 piston surely isn't a direct fit?? Probably some skirt trimming on the intake side or milling a little off the top. I've never attempted to put a husky piston into anything but a husky

You'll have to cut the squish band and adjust your ports. Don't need to remove anything from the skirts unless you want the intake to open faster without removing material from the floor.
I think I have the specs of a 460 vs 272 piston at home.

 

[S&S_Work_Saws]

I guess the 272xp is an open window type piston also then. I can cut the squish band if need be. I guess I'd just have to get a cheap aftermarket piston to play with and figure it out.
Is the husky piston a 2 ring piston or is it a single ring??

 

[Canadian farm boy]

Going off memory here, 272 piston has approx. .100” more compression height. I believe the last one I did I cut the band and the piston crown and either used a real thick cylinder base gasket or doubled up the stock gaskets.
I think I had to do something with wrist pin ??? Possibly had to use a 272 bearing or make space between the pin bosses wider??? I can’t remember for sure.
272 piston is single ring, has larger(taller) windows and slightly wider skirts.

It’s been a few days since I did this

 

[S&S_Work_Saws]

I thought I also remembered reading a build thread about someone doing something along those lines and it required milling the piston top

 

[Rich Fife]

I thought I also remembered reading a build thread about someone doing something along those lines and it required milling the piston top

I did a 440 with a 381 cylinder (52mm) and a 272 piston... that saw is Mean. I ain't trying to toot my own horn but like many have stated, those 044/440s respond Very nicely to the 52mm flavor.
I'm curious to see what the case capacity/volume is when the crank and piston are at BDC. I think.if one had that info, they could use that data along with the 52mm cylinder data and recreate similar results on a larger or smaller scale... (on saws with a similar design).