440 project

[Evan03]

Building this one to keep

Started like this
Got it and 5 or 6 otheres from a logging outfit.


Tore it down did some grinding then back together

Widend intake exhaust, brought loweres down bumped uppers to the exhaust.


Ground through the intake neck on the first cylinder then started over on this one.


Doing the muffler while waiting on caber rings


Chain brake does work just barely


If rings dont bring this compression up, ive been toying with the idea of 46 cylinder and a pop up 064 piston. To be honest i havent realy a clue when it comes to that stuff.

Hoping to use this saa to cut big fir in idaho. This will be my 3rd or 4th 44

You guys do some awesome work on your saws

 

[Evan03]

Got muffler done


Cabar rings on the way. Compression is just under 150 hoping to bump it up some

 

[Dub11]

Welcome to the forum! And looking good there.

 

[Evan03]

I ground through the kneck on my first cylinder so i put it to the side, one on the left


Long story short the dark one makes 150 gasketless and even sanded some.
The left one has zero squish gasketless so running the .5mm gasket it also makes about 150.

I want a tight higher compression saw. 046. My question is are the meteor top ends lasting for you guys.
Next question would a 064 pop up be fairly easy, have a local machinist that im sure would turn the piston for 50 bucks or less.
Ive done some reading and magic pop up might be 030 on 064 piston in the 046 cylinder.

I want to use the 064 piston so that if i decide to or need to i can go back to a 046 piston.

Could some here do a pop 064 piston on measurements that have worked in the past then i can tune squish with gaskets. I know its best to have the saw while doing pop ups.

There is new 046 oem top on ebay for a decent price. But i scared to hit the buy it now its got some scarey external casting lines and two ridges running to the echaust wall. Makes me wonder whats hiding in places i cant fix

Sorry for long winded question. The jb welded cylinder does run well

I havent tuned it or cut with it, just sounds healthy.
Saw is mainly just being built for fun and to cut wood to heat the house and occasional lot clearing job


Thanks for any advice, ill probly be ordering some kind of 46 top in next few days

 

[Dub11]

@GoBigBlue1984 Does the work you might be looking for.

 

[Evan03]

Awesome, thank you ill see what he thinks about turning a 064 pop up

 

[Dub11]

Awesome, thank you ill see what he thinks about turning a 064 pop up

I just noticed your location @Chainsaw Jim is closer to you if your concerned about shipping.

 

[GoBigBlue1984]

Wayne is right. Jim is closer and will take great care of you, but if for some reason he can’t get to it, I’ll cut you a pop up. Just take care of shipping and I’ll hook you up brother.

 

[Evan03]

Awesome thank you guys.

Meteor cylinder work for my needs? Ive been reading up on them and think they meteor 046 will do me good

 

[GoBigBlue1984]

Meteor has served me very well. I’ve had meteor jugs with better/cleaner ports than OEM. Nice beveling. Symmetry.

 

[Evan03]

I gota say Gobigblue1984 is an awesome guy, thank you for all your help. Hes the brains behind this 440/046/64 hybrid build.
Thank you

 

[Evan03]

Got a 46 cylinder and pop up 64 piston from go bigblue over the weekend. I gota say the cylinder is much better than i expected and piston is amazing.

Ive got alittle time with a file makeing my fingers bleed fitting the piston to wristpin bearing and getting the cylinder to fit on the saw.




Im not much for this close tolerance file type stuff i keep eyeing the flap disc on the grinder and wana stuff the 1/4" carbide burr in the piston.

Id rather weld on the muffler so i did


Ill have to get the calipers out and measure ports or wrap paper around skirt to skirt and cut it to see how much winder intake and exhaust can go.
Where shooting for 025ish squish.

Might be a week or so and not even sure i want to play with a burr in this cylinder just yet. Might just check squish and go with it if intake and exhaust are close to skirts

Building horse fence at my place right now wife says thats priority


Brett thank you you are amazing

 

[Evan03]

I think it all bolts together now.

Im not sure the propper way to make piston clear crank bells, heres how i did it.

 

[Evan03]

Things that happen in the night. Hehe

 

[MotherGoose]

Did you finish this saw? I’m curious how it turned out

 

[Evan03]

I actually havent been busy welding.

I do have it on bench and ready. Atleast i think ready. Maybe tonight.

I havent had time to port it. I did port match the cylinder to my muffler hoping to get some time tonight.

Had piston coated

Been busy doing my side work. Made this ROPs fold so mower fits in enclosed trailer


The saw and i have a date tonight thats what i thought yesterday

 

[MotherGoose]

What does the coating do other then look sweet

 

[Evan03]

On the skirt it suposed to help the piston run more true in the bore. The piston will rock slightly and have spots that wear more than others the ceramic will kinda conform to this wear pattern.
They say the ceramic on top is suposed to shed heat better.

It does look kinda cool, though i requested purple.

I honestly dont know if its gona be much benefit in this application. Though this guys coating survived a 15hr salt spray he does pistons in race care motors and sleds running twin turbos and nitrous. He sure believes in it.

Saw may run tommorrow i think i had cylinder on and off a hundred times fitting the 064 piston to crank. I ended up having to shorten the skirts
Squish also hit the mark at .05 with thin gasket. With gasket removed and elbo grease its now .02ish. With that and bretts .04 pop up it should be pushing some good compression. If compression is to high i can shed alittle with the gasket put back in.

Heres a few photos.

I bought some cheap flimsy dawgs on ebay so i ended up cutting these out





Its been a bear. Clearancing the piston journls caused burrs that wouldnt allow wrist pin through

Its actually mostly read to toss rings and circlips in and run it. Hopefully its not a 1 cut wonder

Tempering dawgs

 

[Evan03]

My torch skills can use the practice.



I recently started do quite abit of mobile welding work so ive been keep the neighbors up as im rolling beads running my big engine drive.

Enough off topic i better go finish the muffler spacer.
Bag of circlips gets here tommorrow

 

[460 magnum]

Great thread hope to see videos of the saw ripping thru some wood soon