Mastermind Meets The Husqvarna 572XP

[huskyboy]

Looks like oiling ain’t a problem for it. Could see the oil flying off the bar. Good to see.

 

[Leafy]

What's the bore again? I wonder if this will be yet another saw the 272ish pistons fit in.

 

[Mastermind]

What's the bore again? I wonder if this will be yet another saw the 272ish pistons fit in.

No way the 272 piston would work in a strato saw.

 

[CR888]

I noticed the external transfer covers are there like other 5 series. I wonder if you need to purchase a cylinder kit to get the Oring gasket? Air filter looks impressive, looks like it does what it should. Hope they ditched the air injection.

 

[Leafy]

No way the 272 piston would work in a strato saw.

So it has the weird passages in the side of the piston like an x-torq. Unfortunate.

 

[huskyboy]

So it has the weird passages in the side of the piston like an x-torq. Unfortunate.

So does the 462 piston I believe

 

[StephK87]

have some pics already

565/572xp Piston




MS462 piston

 

[StephK87]

 

[Leafy]

When you port a strato saw do you also work on those passages in the piston?

 

[huskyboy]

@Mastermind when you get a chance can you show the av limiter setup if possible please? Also on the 462 as well. If a saw is going to last with tree guys/loggers... it better have good av limiters imho from what I’ve seen working on the tree crew with people being rough on saws.

 

[MG porting]

Mastermind can you show us some jugs I mean the cylinders before you go doing your magic to them.

 

[Adirondackstihl]

 

[Mastermind]

Lost my notifications to this thread. Hell, I had no idea y'all were posting.

XenForo sucks cock.

 

[Mastermind]

@Mastermind when you get a chance can you show the av limiter setup if possible please? Also on the 462 as well. If a saw is going to last with tree guys/loggers... it better have good av limiters imho from what I’ve seen working on the tree crew with people being rough on saws.

I will when I get back to it. Bench is covered with MS261s right now.

 

[Mastermind]

When you port a strato saw do you also work on those passages in the piston?

Not much.......in some cases I've changed the strato timing there. But.....I've not found much gain.

 

[Duane(Pa)]

Lost my notifications to this thread. Hell, I had no idea y'all were posting.

XenForo sucks cock.

Don't hold it in Randy, tell us how you really feel...

 

[Mastermind]

Don't hold it in Randy, tell us how you really feel...

I rarely can.......but I try.

 

[Leafy]

Not much.......in some cases I've changed the strato timing there. But.....I've not found much gain.

Huh, you'd think you'd need to move strato timing with the exhaust timing and maybe if rpm range changed. I guess that might only make a difference for fuel economy and emissions.

 

[Deets066]

So......what do y'all think about trying a popup piston next?

What’s the band look like?
Stock timing numbers?
Stock comp.

Maybe half pop and half squish cut

 

[Redfin]

Huh, you'd think you'd need to move strato timing with the exhaust timing and maybe if rpm range changed. I guess that might only make a difference for fuel economy and emissions.

Green lines are on a clear piece of plastic and are the piston edges. The small green line is where the piston would be on intake at bdc.

Top of white paper is against squish.