Husqvarna 350 comparison video with cut times!

[wigglesworth]

He is probleby 30-40% bigger in muffler modd then what you normally do on your saws Matt.
I like the performance on his stock saw (not certain it's stock though) and your #4 and 5.

Lmao!!

@paragonbuilder you gonna have to pull that jug and show them boys....

 

[paragonbuilder]

It's going to get pulled at the CT gtg in 2 weeks for sure.
What's your take on this Jeremy?
Muffler mod does more than we think?


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[Tor R]

Lmao!!

@paragonbuilder you gonna have to pull that jug and show them boys....

hehe you know how it work, if a stock saw beat a ported one there has to be some secret, you sure have got the two lads to wonder what you did lol

Me? I gone watch this thread and pick up lots of learning!

 

[Mattyo]

I would not pull that jug. ...runs too nice to pull it. Odds are we are going to find that it's stock and then the joke is on us.

Your saw dan...so do what ya want. ....but I would leave it.

I'll order a muffler to stick on there. And I'll mod a single one of my saws so it's as open as yours and see where that gets us.

Then we will run the whole thing again.

 

[paragonbuilder]

I would not pull that jug. ...runs too nice to pull it. Odds are we are going to find that it's stock and then the joke is on us.

Your saw dan...so do what ya want. ....but I would leave it.

I'll order a muffler to stick on there. And I'll mod a single one of my saws so it's as open as yours and see where that gets us.

Then we will run the whole thing again.

It won't hurt anything to pull the top and take a look Matt.

 

[wigglesworth]

It's going to get pulled at the CT gtg in 2 weeks for sure.
What's your take on this Jeremy?
Muffler mod does more than we think?


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At least pull the muffler. Then folks can look up in it.

A 2 cycle is just a pump. It can only take in as much as it spits out. Open them muff's up....

 

[concretegrazer]

Open them muff's up....

But then they'll be loud & stuff...

 

[paragonbuilder]

But then they'll be loud & stuff...

I like the smittybilt shirts. On the back they said "too loud, too bad!!"

 

[Mattyo]

I hear ya
...I do. ...

Where do you buy bulk spark screen material?

 

[Chainganger]

I hear ya
...I do. ...

Where do you buy bulk spark screen material?

Go to goodwill, buy used screen oil splatter screens that go over frying pans, made of stainless steel and you can torch them to clean them. Probably really close to legal screens.

Thank me now or later.

By the way, using your vids I bought a junk parts only Husky 345, bought the reduced price OEM 346 p and c kit and boot clamp from Spike60, did some minor transfer porting to match base to cylinder and smoothed out the base. No angle grinder, left exhaust port alone.
And now will really open up an AM muffler.

I am embarrassed to report hours involved so I take the 5th amendment on that.

 

[wigglesworth]

I hear ya
...I do. ...

Where do you buy bulk spark screen material?

What's a spark screen?

 

[Hedgerow]

Was wondering the same thing..

 

[Mattyo]

ok, made a similar muff mod to one of the saws. did a private run today.... its louder, not sure it made it faster. we'll see at the gtg.

 

[paragonbuilder]

Matt I've been thinking...
We had those bars buried! Some guys like a torquey saw, others want a screamer for limbing. It's possible your porting is more suited to limbing and it would crush the other saw there!
There are a lot if parameters here...


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[Mattyo]

well, if the dyno is up and running, we will see how peaky the power is on these saws as opposed to the higher torque? on your "stock" saw....

 

[Duane(Pa)]

But then they'll be loud & stuff...

Now you're talkin' !! Chainsaws should have some orange & be LOUD. Annnnd....I have a saying: "It's The Chain" Bring on the Dyno!

 

[wcorey]

Matty, are you running caber rings on all your aftermarket cylinders or what came with them?
I also noticed the tunes had some variance, #5 was running noticeably leaner than #4.

We should have also tried another log, afterwards I put a half dozen other saws through it and there was something peculiar there.

As to comparisons against the 346 and 350's I threw into the mix, two were running semi chisel and the other chisel chain was giving me problems also, really had to push on it. So I wouldn't read much into that aspect...

 

[Mattyo]

I am running the rings that came w/ the kits.

Next log we run in, needs to be a 24" diameter log that is shaved down to 12" depth. so it'll be tall, but only 12" deep or so. I didn't feel like I had a lot of control at the ny meet... I think the test will be more controlled here in CT.

 

[jmssaws]

First off, HUGE thanks to Dan @paragonbuilder for being the trigger man on this job. He ran every saw smooth and consistent... (and when I ran the same saw, I was 30% SLOWER)

2ndly, big thanks to Cutting Edge in NY State for hosting the GTG where I ran this comparison.

For a while I have been told that oem cylinders are the best....period....for the husqvarna 350,346xp and the like. Also, the 346xp oem 44.3 cylinder trounces all. But what about all the AM cylinders? Even if they aren't great to start with, can they be made to be AS GOOD as the oem? or better? or is there no hope for the AM stuff? ..... ESPECIALLY NOW with the oem cylinders so relatively cheap.

So....

I personally have 2 husky 350s. One is an oem 45mm cylinder saw that I ported and muffler modded. It no longer has the dished piston. It runs well, but not as well as my other 350 that has a 45mm AM cylinder....the now famous hyway saw that I ran at the November GTG here in CT.

My process has been, #1, optimize the squish while retaining a gasket by milling the bearing cup/riser appropriately. aim for .020 squish. oddly enough my hyway saw ranges from 024-028 depending on where its measured. I do not cut squish band....
View attachment 20168

#2, grind the transfers to 124 or so ...I now have a piece of card stock that I can use that tells me where to put the transfers so they are consistent throughout the saws.

View attachment 20169

#3, exhaust at 105, intake around 78. slight widening and squaring. I don't go crazy.

View attachment 20170 View attachment 20171

#4, open the muffler under the screen, again, I don't hog the thing out completely, but it gets a considerable size opening when I do this.

#5, the riser gets ground, mostly for smoothness.

View attachment 20172

everything gets put together w/ gaskets and loctite 515 or 518.

So...

I decided that I'd buy some other aftermarket cylinder kits and see what I can do with them. The cylinders I got were both 346xp 44.3 clones from ebay ... UK kit and Kafar kit.

I also GOT SENT an OEM 346xp cylinder kit.... THANKS @bplust the trade here was that he sent me the kit and a parts saw, and I build him a ported saw. I get the comparison, he gets the saw. good deal I think.

So now I have 5 saws. ..... THE CONFOUNDERS.........

#1, my oem 45mm saw may not be ported to the exact same specs. Don't remember exactly what I did.
#2, my hyway saw cylinder and the new cylinder just sent to me by HL Supply are two different cylinders. Hyway must have updated their design. The new plating ROCKS, but the combustion chamber is smaller.
So, even if someone wanted to replicate my hyway saw it wouldn't be possible because the old cylinder isn't available.

old hyway

new hyway

For the above test I used the same size bar on all the saws.. husky oem 16" 325 050 66dl. I bought BRAND NEW CHAINS from leftcoastsupply for all of the saws. I ran the saws dry and only used trufuel 40:1 for the comparison.

Now the monkey wrench. I asked the group for a stock 350 to run against my saws. @paragonbuilder said his saw was stock except for a muff mod and that we could run that. ok. Welp, as you can see from the vids, the STOCK saw runs right with any of the other saws in the group. It consistently gets 10 second times. and though saw #4 and #5 get sub 10 seconds, the stock saw isn't getting trounced.

Just this am I found out the stock saw has 100 psi comp. 100!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!. All of my saws are over 150, and my hyway saw is closer to 175 comp.

The stock saw isn't stock... it has a muffler mod. Looking closer, it has about triple the exhaust area any of my saws do and no screen. Pretty sure most of my saws were running screen. NONE have that much exhaust area though.

Yes I know I should have run the same B&C on each saw, but overall it didn't really seem like that was an issue. The test ran pretty much as expected, except for the one outlier which is that stock saw.

Honestly, I'm pretty bummed. I spent a PILE of time and a PILE of money getting this test best I could.

Worse, it really seems like all the effort I have put towards milling, porting, polishing, measuring, increasing compression etc has all either been for naught or just not worth it as compared to doing a simple muff mod?

-Mattyo

Good clean grinding, good job.

 

[paragonbuilder]

I am running the rings that came w/ the kits.

Next log we run in, needs to be a 24" diameter log that is shaved down to 12" depth. so it'll be tall, but only 12" deep or so. I didn't feel like I had a lot of control at the ny meet... I think the test will be more controlled here in CT.

Matt I'll have it ready. What species would you like?