Husqvarna 357xp hybrid build

[drf256]

Great job and thank you for sharing.

Your "hack job" on the handle mount is anything but one. Looks clean.

That would be a tough place to Tig without removing a few fins for access and having to reweld.

I'd say you done real good

 

[Toad22t]

I'm quite happy with this thing now. And that adhesive didn't budge.
Here's a video of it in a smaller log as an original 357xp...ported:

Here's the before port job video of it with the 272xp cylinder:

Here's the after video:

Damn I want one now! Where do I sign up?

 

[ny15]

I definitely need one also

 

[P.M.P.]

Damn I want one now! Where do I sign up?

I scored it 15 Mississippi14 Mississippi 12 Mississippi on the videos

 

[Chainsaw Jim]

I suppose I should post up another one of the videos I recorded back when I did this.

Here soon I'll be pulling it back apart to install a brand new piston and weld the av mount to the cylinder.

 

[old guy]

How much difference is there between the stihl piston you used and a reguler 272 piston? What piston are you putting in next?

 

[Chainsaw Jim]

How much difference is there between the stihl piston you used and a reguler 272 piston? What piston are you putting in next?

The 272 piston can't be used because it has too large of pin size at 13mm. The 046 piston I'm running in it is old and worn and I'm replacing it with the ms460 piston which is the same thing. I wanted to see how the build would turn out before spending money on a new piston.

 

[old guy]

The 272 piston can't be used because it has too large of pin size at 13mm. The 046 piston I'm running in it is old and worn and I'm replacing it with the ms460 piston which is the same thing. I wanted to see how the build would turn out before spending money on a new piston.

Thanks Jim, looks like I gotta order a new meteor piston.

 

[Chainsaw Jim]

Thanks Jim, looks like I gotta order a new meteor piston.

Oem is about $5 more than meteor.

 

[old guy]

Oem is about $5 more than meteor.

I have been using meteors, their good, besides, I can order some other stuff from H&L at the same time.

 

[old guy]

Ok, my new piston is bottoming in the case, I can shorten the skirts but how much clearense does a piston need?

 

[Chainsaw Jim]

Which exact piston are you using?

 

[Chainsaw Jim]

Ok, my new piston is bottoming in the case, I can shorten the skirts but how much clearense does a piston need?

What's the top to bottom measurement of your piston? And the measurement from the bottom of the pin hole to the bottom of the skirt.

 

[old guy]

I have a new Meteor Stihl 460 piston, I did not have time to work on it after I found it was too long, but I would like how much clearance a piston needs at the bottom, I will measure it up later. thanks

 

[old guy]

I got back to it this aft., total piston height is 1.5535, bottom of pin to bottom of skirt is .481

 

[Homelite410]

How did I not see this!

 

[Homelite410]

Well I'm all done reshaping the intake and relocating the impulse barb.
View attachment 21955 View attachment 21956
I went with an 045/056 intake boot which didn't take much trimming to match the carb side with the impulse hole.
View attachment 21957
View attachment 21959
Now it's time to reassemble it.

Now there is a helluvan idear!

 

[Chainsaw Jim]

I got back to it this aft., total piston height is 1.5535, bottom of pin to bottom of skirt is .481

Those measurements are spot on. I don't remember relieving any part of the case or piston to clear. If the cylinder isn't aligned perfectly then it'll allow the piston to touch. I made each side of the collar thinner to fit the case and I made sure I took an even amount from both sides to stay straight.

 

[old guy]

Thanks Jim, the piston hits even without the cyl. on there, no matter how I wiggle it, I'm not concerned with this as I can just trim the piston but how much does it need to safely clear .010 .020 .030?
I don't quite have the cyl. down on there yet but getting close, I took both sides of the cyl. skirt down evenly but I have more to do there, the original cyl. had about .025 slop in the case, I'm not going to leave near that much. Which base gasket did you use.

 

[Chainsaw Jim]

I believe I used a piece of thin paper to give the gasket maker something to bond to since each side at the transfers are so thin.
You should consider any clearance work to be done at the case for the piston unless you have measured and have enough skirt to spare to avoid freeporting at the exhaust.
The amount of clearance should be enough to where it doesn't touch when you rotate the crank. The parts don't flex or travel beyond the distance you see when turning it by hand unless a bearing is bad.