Husqvarna 51/55 Piston Piston Swap | 028 Super Piston in a Husky

Swapping a 028 Super piston into a Husky jk-saw-shop.cr...

[@Finom1]

Bless you JK for sharing your life and wisdom with us:) great educational video:)

[@shapeshifter7753]

Thanks for going through all this!! I’ve got two dump find 55’s and two 028’s from the same place. Already did a custom muffler on the 55 which turned out great! Next will be the pop up piston and mild port work on the stock jug. I really liked that saw you did for Dan👍

[@JKSawShop]

Dan’s has a 55 pop up piston and some port work. It is definitely a great runner. There is quite a bit of work that goes with the 028 piston swap, they are not a direct bolt on a go.

[@shapeshifter7753]

I may have to buy a piston yet… haven’t tore down the 028’s yet to see if they are any good but they’ve got good compression and I’ve had em both running so 🤞 should be a fun journey! Been saving up parts for this for a couple years and watching your vids is really helpful 👍 thanks JK!

[@JKSawShop]

@@shapeshifter7753 Thank you it means a lot to me.

[@MitchellsBackyardLogging]

That’s a cool build man I like the way it ran

[@JKSawShop]

It was decent

[@ScrewdriverTUNING]

Keep up the fantastic work. Your attention to detail is fantastic my friend .!!!

[@JKSawShop]

Thank you Billy from Philly. I try to do the best I can most of the time.

[@ClintsHobbiesDIY]

Great R&D vid Josh.

[@JKSawShop]

I just had an idea and thought I would try it out. I am still planning on trying to race both of those saws.

[@KainKustomGarage]

That's Awesome! She runs nice!🤩

[@JKSawShop]

This one does real good

[@jackylsmith8138]

My 55 rancher came with a 3/8 chain and a 18” bar brand new in 2000. She still runs nice today.

[@JKSawShop]

That is awesome. I just really like to play with those little 55s

[@justinweaver8787]

Awesome build buddy Cant wait to see more on it!

[@JKSawShop]

It’s not what I expected

[@IndianaDoug]

Cool mod👍🏻 lookin forward to seeing it on the wood.

[@JKSawShop]

I’m going to go ahead and spoil it… It is not horrible bad, but it is not great either

[@SouthernPatriot1]

Awesome mod brother! Look forward to seeing more from this lil beast. God bless.

[@JKSawShop]

There will be more to the story, it’s being written now

[@SouthernPatriot1]

@@JKSawShop 😂

[@PhilDuguay138]

So do you really need to cut a relief for the spark plug? Got a hyway CP cylinder and went for the 028 because squish was horrible on the hyway kit, 0.058 if i aint mistaken, now with a 0.015 gasket i'm at 0.023 with the 028 piston, but i'm not touching the spark plug, should i still notch a dimple in it or leave it as is?

[@JKSawShop]

This one I had to

[@jonbobskunkworks]

Looking good!

[@JKSawShop]

Thank you Jon Bob

[@timberslasher4899]

That was a really good video, I actually might have learned something 🤓 I have a 41 that is toast that I want to build just to see if I can. 😆😆

[@JKSawShop]

I done really mean 41 for muffler delete

[@timberslasher4899]

@@JKSawShop That's awesome! I'm no porter.... Yet. I need to just build a few and make them run first....lol. I'm gonna split this one just to be doing it if you know what I mean...

[@JKSawShop]

@@timberslasher4899 The best advice I have for the 41 is to get air to flow better, and throw a little bit of timing advance to it.

[@timberslasher4899]

@@JKSawShop I will remember that... Thanks!

[@StevenLettsPerformance]

Nice work buddy! I'm curious the longevity of that piston thinning out the top.

[@JKSawShop]

We will find out. I’m planning on putting a lot of run time on it

[@justinweaver8787]

I sure as crap wish my muffler would have went on that easy lol great job buddy.

[@JKSawShop]

There is a trick to everything

[@transdimensionalist]

i had trouble getting mine on, seems the casting needs opeing out to allow the studs into proper position

[@thecollectoronthecorner7061]

I bought a new rancher 55 in 2000. Spent more time putting the chain back on the rollertip bar than I did sawing. Next day bought a new non roller tip bar. It never oiled the chain enough to suit me. I tore all that loosey goosey VI stuff loose. Its now in a 51 housing. Engine still runs good. Dont use it very much. I would rather use my 68CC 1967 Lombard or a 58 cc super XL automatic. Me and roller tip bars and plastic saws dont get along very well.

[@JKSawShop]

I found a surplus of 51’s I kinda enjoyed building them.

[@easingrapod1274]

Hi. do I have to make any modifications to put a stihl 028 piston in it?

[@JKSawShop]

Yes you need to widen were the rod’s little end goes

[@wilkey40]

Some OEM 55s are 45mm and the 028 46mm piston will not fit

[@JKSawShop]

The closed port 55s are 45 just like the 51 and the open port is 46

[@simpleman4224]

Nothing beats a failure but a try! 👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏

[@JKSawShop]

Always keep trying new things.

[@82f100swb]

I ended up with a .010 base gasket to get to .020 squish, the popup was actually hitting the chamber with no gasket. With the .010 gasket I was able to get away with just a second gasket on the plug. I've kind of always felt my built 55 was a turd, even when it was bone stock, now it's just a polished one... LOL

[@JKSawShop]

This one does all right. It’s defiantly not the powerhouse that I think it should be. It would probably do a lot better if I would put the 325 chain on it.

[@82f100swb]

@@JKSawShop I've ran mine with both, both my 254 and 026 will cut circles around it. It's better now with the HDA120, but it's not in the same League

[@JKSawShop]

@@82f100swb I don’t think they will ever be in the same category. Just trying some ideas.

[@82f100swb]

@@JKSawShop The 254 has more stroke so I think it's going to be hard to match. It's always been my target though. My 026 is just a freakshow. A 48cc saw has no buisness running like it does.

[@JKSawShop]

Longer stroke helps the 254.

[@lennie8098]

Hyway makes a dome piston 46mm for the Husky 55

[@JKSawShop]

The 028 super piston is a little taller than the 55 piston, I do have a 55 cylinder and a 55 pop up on my other 51. Just wanted to mix it up and try something different.

[@brianmorrow6355]

I'm in the middle of building two 55s waiting on an 028 piston

[@JKSawShop]

It works. There’s just a little bit of things you have to do, I’m going to run this one for a while and then I may end up buying a better piston.

[@brianmorrow6355]

@@JKSawShop I'm waiting on one from Lil red shed we will see what it does.

[@JKSawShop]

You could probably get by using the base gasket and .030 squish. That way you dont have to index the plug or relief the piston.

[@brianmorrow6355]

@@JKSawShop I've got 2 base gaskets to choose from and the head that's on it is a farmertec but the squish is like .038 with no gasket so it's pretty loose. That's what made me go with the 028 piston hopefully to get a little more compression and a double ring piston should have less blow by

[@JKSawShop]

@@brianmorrow6355 it will pull a 20”standard 3/8 in soft wood, struggles a little in white oak. Gonna go back to .325 chain more than likely.

[@dentonsbackyardshow1013]

Now adays they tend to market throw aways. Not mamy prople work on small engines anymore

[@JKSawShop]

I do a lot of trying to save em

[@jackfrosty79ify]

Piston clip suck

[@JKSawShop]

It’s a necessary evil, I can’t tell you how many of them I have lost.