Husqvarna Hybrid! 359+272xp!! 72cc sleeper

Finally getting around to a build I have heard about for a while. 272xp cylinder on a 359 chassis. Total sleeper build.
For more product and service info please visit the website
worksaws.com

[@douglasmatheson403]

I like the older ones up to the "3" series, the "5" series Im just not liking....(maybe the 543 (but I have not ran one) I really want to do this build now!!!

[@ktrudeau340]

That is awesome. That may be the perfect firewood ripper.

[@mattfleming86]

She ain't low on power.. You just ain't found and fixed the bottleneck yet 😎 That's a cool ass saw. I love the gritty ones. Thanks for sharing man.

[@7eis]

Still rock the 357xpg. Have a 359 with the transfer caps shaved. 372 barely gets any use, the 500i took over most of it's duties

[@wirthwhileproperty]

I've got a 357 on the bench that needs refresh. Would love a featherweight 70cc!!!

[@jberry1982]

You can also bore the factory cylinder to fit that 54mm piston as well eliminating the need for extra bracket welding

[@nopeavyneeded1953]

this is Awsome I have one that needs a top end now I wanna do this I love the 359

[@dynojoemods2764]

Thank you, was a fun build for sure

[@clintdoucette2868]

Love my 359! Great firewood saw and just a muffler mod really wakes these saws up

[@brettblack7049]

They are a great firewood saw 👍. Base gasket delete and a timing advance perks them up nicely on top of the MM. Have a great weekend and merry Christmas. Forgot to say, the 455/460 rancher clutch cover is a great upgrade too as it gives you a nice large side tensioner instead of trying to find that little one in there.

[@damonscarlettgraves7305]

Have a 359 been down for 2 years now with bad cylinder it was my go to saw and now you just put Lil fire under my @#$ to get this mod done

[@takeashawnoutdoors5518]

You are speaking my language, I have a old 257, 365 , and 272. In husky. And my old reliable the 034 super are my firewood saws.

[@luisgodoy9315]

Sick saw man

[@dynojoemods2764]

Thank you!

[@w6qd]

The snow hasn't fallen in Michigan yet?

[@brettblack7049]

It has now 😆

[@jasonvining8108]

It's cold and rain.. 1/3/23

[@w6qd]

@@jasonvining8108 Living the dream, raining in January in MI.

[@DeltaFoxtrotWhiskey]

Nice work Joe! I like the 3 series Huskys so I guess I’m old school 😎

[@dynojoemods2764]

Thank you. Nothing wrong with a 3 series

[@johnloftus4561]

Love watching all the different dyno data , nice round curve this one ! You say 6 hp is low for cc but I want to use it in the woods and that’s the real proof! It’s lighter no matter what! Fun answer to new stuff! New stuff is cool too from what we see in the shops.thanks for your effort!

[@JandSChainsaw]

That's a cool build I've got some 268 cylinders and most of a 359 maw have to give this a try

[@rodneyyazzie3739]

Nice build bubby, I'll be happy to help you out with trying it out. Let me know

[@cajun3197]

Carb gotta be holding it back. Good build quality

[@dynojoemods2764]

Very possible.

[@shawncaudill424]

Completely amazing man I would love to run that wow truly a piece of art not only art but function as well wow great job

[@timberandtools]

Awesome video!! I appreciate the transparency of builds ups and downs

[@dynojoemods2764]

Thank you, not all are winners. Or at least right away.

[@scottallpress3818]

That flatline does seem like a carb restriction , keep fiddling you will get there . Still a killer upgrade .

[@davec1835]

Use the 272xp piston and cut a massive pop-up but that's what you already know looks great....

[@steelcityperformancesaws]

great build!

[@mfsaws8240]

Nice build joe!

[@justinweaver8107]

Now id love to have 1 of these builds

[@felonebike9859]

Love your videos 📹 Thanks for all the info!

[@petehendry4756]

I have a 359 that was ported by rich dugen , its just a nice solid reliable runner with a 28 " bar , i do wish it put a little more oil on the bar but 🤷‍♂️

[@kingsaws]

Thats pretty cool man . Ain't no limit to what you can do

[@vascopires2045]

I got a 357 and a 272 love them both now put them together very nice

[@Casaperformancechainsaws]

Absolutely fantastic! Looks like it cuts alright! Yes I’m thinking bigger carb 👍

[@joutdoorsmen23]

Awesome job Joe, love the saw show and maybe a bigger carb, Merry Christmas

[@simpleman4224]

Purty slick! Merry Christmas buddy! 👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏

[@jberry1982]

If you buy the stens piston kit for stihl saws there all double ring pistons which I like better than the single piston ring oem setup

[@sunbear1973]

This is awesome and fun to watch. I would bet that with a little more tweaking you can get that HP even higher but still it is good increase of power. 👍

[@BuckinBillyRaySmith]

great idea joe

[@dynojoemods2764]

Thank You! It was a fun project for sure.

[@alex0000s]

That's an amazing build Joe!. 6HP is still like a 15% Gain over a stock 272XP so I'd say it's pretty good (especially considering it's weight). Maybe try a 372XP carb for some extra power?

[@dynojoemods2764]

If I decide to keep it a larger carb may indeed be the way to go

[@coreyrannebeck5971]

Would drilling the jets and boring the carb be a easier option then trying to fit a bigger carb to it?

[@stihlvarna]

The problem is getting enough air, not getting enough fuel.

[@fabzacres-blackcat]

@@coreyrannebeck5971 yes 👍, changing the jets and boring the carb a fuzz might be just the ticket

[@charlesboston1]

so to make a comment on the part where your complaining that it is low on power for a 70cc saw ... this isn't a 70 cc saw it is a 359 with a big bore kit ... the power still has to go through a 259 crank , clutch , sprocket and bar ..... i haven't had a 357/359 apart , so i can't speak to how well theses parts will hold up to the higher hp .... but you are putting 50% more power through it . also with the smaller saw , it won't wear you out and you will be faster and less tired operating it ..... which would make it a more productive saw over one on a larger heavier frame that makes more hp

[@dynojoemods2764]

Yes, the rest of it is lighter than the 70cc saws. But with the engine itself displacing 72cc 34mm stroke x52mm bore I had hoped to make the same type of power as my other 70cc builds. It is a nice saw to run and use. Huge increase over stock.

[@chrisvincent5938]

I would add that this 359 is only 34mm stroke. This I believe would also hold this saw back as the modern 70cc saws now carry 36mm strokes. Night and day difference between an 038 and the 044

[@charlesboston1]

@@chrisvincent5938 the 254 . 257 262 and the 266- 272 family are all 34 mm stroke , and there are no flies on these saws

[@mrxlh]

Nice overall build Joe, it would be interesting what a 50mm jug (268 since you have everything made for that intake config) would do.

[@Stutzvideo]

Pretty cool, to bad it was a little shy on hp. Hope you have a great Christmas.

[@donjohnson9170]

I like old saw

[@joejohnson7316]

I'm about this set up!!

[@dynojoemods2764]

It has some potential.

[@230e4]

Nice build Joe! I really like this build and would love to try it in the woods. What did the saw weigh when you were finished? Merry Christmas!

[@dynojoemods2764]

Thank you, I would guess only a few more oz than stock.

[@WilliamCrooks]

Sounds great 👍, no snow? You must be down south somewhere 🤔

[@brettblack7049]

He's got snow now, and cold temps, must have recorded it earlier, edited and then posted. Where you at, Joe and I are both in MI, he's a bit further south though.

[@dynojoemods2764]

It is here now. Filmed before the storm came through.

[@WilliamCrooks]

North Central Wisconsin.

[@playingwivwood]

A stihl 056 top end is workable to fitting on a 350 chassis. You would just need to bore out the rod a tad

[@dynojoemods2764]

That would be a big 350 saw

[@playingwivwood]

@@dynojoemods2764 yeah it would.. If anyone could pull it off its you. I couldn’t figure out how to drill out crank so I could fit a bearing onto the piston rod. Was gonna try a normal drill and drill bit, but don’t think that would be precise enough

[@ecstans07]

While it doesn't seem super impressive for a 70cc saw, it would also be nice if you report power/weight. This is what really matters for a chainsaw, since you have to carry it. I think people get a little too focused displacement. While it is generally going to be the limiter on power, power:weight is what makes a saw usable.

[@brettblack7049]

Very cool build Joe. What do you enjoy more, building this type of hybrid/ custom or porting saws. Hope you're staying warm, sure looking different than this video over your way now 🥶.

[@dynojoemods2764]

Thank you. Yes, we have some snow now lol. I do really like to mix these "fun" builds in with the general workflow.

[@brettblack7049]

@@dynojoemods2764 I figured. I like modding anything I can to fit my needs. It seems everything can use a little modding lol. If you need some chains done up let me know, I'll be heading past this weekend.

[@zachgordon9531]

Super cool saw, do you ever sell the saws you build?

[@dynojoemods2764]

Thank You! Yes, every now and again I will list some saws on my website Www.worksaws.com

[@300whisper1]

Holy crap! Now I’m eyeballing my 357XPG like never before with very dirty thoughts in my mind…

[@charlespeacock8360]

Nifty build. I don't know if the Stihl piston is windowed enough and changing from outside transfers to inside transfers might pose a flow problem. I can't help but consider JB weld to reduce case capacity. Just my clueless ramblings. Thanks for showing us.

[@brettblack7049]

Why reduce the case capacity?

[@charlespeacock8360]

@@brettblack7049 I theorize increased pressure to push charge up transfers through a windowed piston. I kinda remember the case volume on the 350/359 being a bit large. Could be my imagination.

[@brettblack7049]

@@charlespeacock8360 I see, I was thinking the opposite, large for the 359, small for the 359/372.

[@srankin8022]

Interesting build for sure. I'd be curious to know how your homemade intake boot is arranged internally. There may be some steps in the airflow that's hurting your performance.

[@dynojoemods2764]

It is a fairly straight shot. Minimal disruption. Until it meets the cylinder. As the 272 has an odd intake port

[@jensenwilliam5434]

Thank s

[@z1berzerker]

Decent build over all... 2hp gain. More about how it cuts... than numbers sometimes 🤷

[@vito112c]

Hey what aluminum welder do you have? Super job keep it up. I wonder if 550xp mk2 would do in a hybrid.

[@dynojoemods2764]

I have the primeweld 225. It has treated me well for the past couple years. 550 hybrid would be wild.

[@joesalazar770]

Quick question on a muffler port job someone drilled holes in the front of the muffler and it burns the tree as it is cutting it if I pull that from defissrr off and biuld a plate to vent it to one side will that change the way the saw runs much it runs great but can't be burning the wood as I cut it well could get ugly. Thanks have fun love playing with two strokes.

[@dynojoemods2764]

Off to the side should not change performance much if any.

[@bodeine454]

I bought a used Husqvarna 450 X-Torq about 3 years ago to cut up a tree in our front yard, it's been a good saw so far for my needs but I got it before I really started researching chainsaws very much and have seen all of the mods and builds that can be done. Do you have an opinion on this model and do you know what mods would work to make it a real performer rather than just a homeowner saw?

[@dynojoemods2764]

I do have a video on those, it is a ways back. But best easy gain is a muffler mod.

[@bodeine454]

@@dynojoemods2764 I'll look for it, I believe I told you wrong, I think it's a 435 X-Torq.

[@raynheath450]

You're hard on yourself Joe you're putting A70C cylinder on A60CC chassie And still got impressive numbers

[@ocsplc]

Dyno: I’ve got a vintage Husqvarna 380CD and 288xp (old one with metal chain brake). If I go bigger bore I can go sideways but the stroke has to match, correct.? Or does one have to replace connecting rod?

[@IndianaDoug]

How far off is a 372 carb Joe? I really like the Zama carb on my 359 over stock carb.

[@dynojoemods2764]

Not sure, I don't have a 372 carb here lol

[@kowski9477]

Could it be that it's just not broke in? Just curious. The out of the norm kind of content that intrigues me . Good video!

[@dynojoemods2764]

Might find a few % but it is held back by a few things I'm sure. Carb, port width etc.

[@jackpinesavageadventures3142]

👍 Nice !!

[@jackpinesavageadventures3142]

Thanks Joe for taking the time making the videos that share your builds with us.

[@dynojoemods2764]

Thank you for watching.

[@novicelumberjack]

I ran a 359 for the first time just a couple weeks ago. It was completely stock and I was in LOVE! The reason I liked it so much is because it felt sooooo similar in size and weight to a 350, but with an additional 10cc! I bet it feels Amazing with even more cc's. I would be bummed too with only 6hp though. Definitely a disappointment and surely it should be capable of more power than that. Gotta be getting held back. I for one would love to see you work the bugs out of this saw. VERY interresting. I would also love to see it compared to a good ported 359 and 357. But I think you may have those in another video. I'm pretty sure I've seen that you have gotten the Echo 620 to produce 6.8 hp and Charlie has gotten 7.2 hp, so yeah...if I built a 70cc saw that only produced 6hp...I'd be totally bummed out. Gotta be something going on. My heart weeps for you!

[@dynojoemods2764]

They are a comfy chassis. Yeh it hurt pretty good.... having some 60cc best it in the hp output. Might have to try some other things. See if I can get some more out of it

[@charlesboston1]

that seemed easy ...... i wonder if there is room for a 58mm big bore cylinder from a 395 ? :D so along the same lines as your build , it seems very possible to fit a 272 cylinder onto a 257 / 262 ( maybe even with a 254 with a 257 / 262 crank ).... which would be very similar to your build , only smaller, lighter , and with worse antivibe

[@dynojoemods2764]

54mm could be done easy enough. But I would want a larger carb etc.

[@charlesboston1]

@@dynojoemods2764 i was thinking 58mm :D

[@oldcodger1929]

I'd take that over an auto tune saw any day.. Nice job.

[@dustinbeck1852]

What kind of money would it be to build one of these 359 to 272 builds? I would like to try one out.

[@jberry1982]

A new chain would eat through that soft pine like a hot knife through butter which that chain is gotta be dull as shit

[@hatchwoodproducts3029]

Case volume must make quite a difference? 🤔

[@dynojoemods2764]

Case volume of which saws?

[@joelkleintop1991]

Hey man I got a 359, with a blown motor I’d really like to do this you got any tips.

[@dynojoemods2764]

The boot and the av mount is the worst part.

[@RichFife]

Do you feel that carb is limiting some power?

[@dynojoemods2764]

It very well could be

[@megat478]

Can 353xp upgrade like this?

[@NothingButChainsaws]

What if you used a popup piston? And a Husqvarna 365 carb!

[@charlesboston1]

the 365 carb is a lemon .... a guy would want a walbro off of a 372

[@dynojoemods2764]

This one has a good bit of compression already with .060 out of the band.

[@marywiebe9468]

how much for a saw like this john

[@dynojoemods2764]

For this one? Or to duplicate it?

[@canadiancutterschannel6787]

Can you do a ms661c ?

[@dynojoemods2764]

Yes, can port the 661

[@garengtutorial8923]

Apakah 365 sama cilinder block piston nya dengan mesin itu bos?

[@dynojoemods2764]

No, they are very different from the 365/372 cylinders.

[@jberry1982]

If you could jet up the carb it would probably do 7hp not much more most I've seen was 7.7hp on a 72cc engine

[@jberry1982]

I never liked the single ring pistons like Stihl uses alot

[@kevinparent8843]

hah ! nice build there woww. imabout to get a 272xp on my 266 ill follow your number to help me , thanks