circle crank ms660

[jmssaws]

I have thought about using a 385 piston.

 

[Miller Mod Saws]

I have thought about using a 385 piston.

I don't have a laptop but if ya do you can look up the pistion specs at baileys. But i think the 385 has longer skirts. If it has a taller top ya might not have to do so much jug work. The 056 looks a lot the same as the 385.

 

[Miller Mod Saws]

Maybe I'm thinking off to but if ya didn't half to take so much off the base wouldn't that add case volume?

 

[jmssaws]

It seemed like it had a narrow skirt compared to the 288 piston.

I can't remember exactly but there's a reason I used a 288

 

[jmssaws]

Maybe I'm thinking off to but if ya didn't half to take so much off the base wouldn't that add case volume?

A 288 piston decreases case capacity,

 

[awol]

The 385 is a bottom feeder, so its piston has skirts all the way around, these would block off the lowers of a middle fed saw like 066. A better possibility would be a 288 piston in a 385!

 

[MG2186]

The pin height is different on a 385 being the 288 has more stroke, would that be the reason?


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[jmssaws]

The 385 is a bottom feeder, so its piston has skirts all the way around, these would block off the lowers of a middle fed saw like 066. A better possibility would be a 288 piston in a 385!

That's why I didn't use it. Thanks alan

 

[MG2186]

The 385 is a bottom feeder, so its piston has skirts all the way around, these would block off the lowers of a middle fed saw like 066. A better possibility would be a 288 piston in a 385!

Sounds like something you should try with a longer rod to compensate the pin height difference!

 

[jmssaws]

A 288 piston takes a 660 to another level that can't be reached with a stock piston.

 

[Miller Mod Saws]

A 288 piston takes a 660 to another level that can't be reached with a stock piston.

So your saying you need a 288 piston and a stroker crank!

 

[jmssaws]

So your saying you need a 288 piston and a stroker crank!

Not necessarily the stroker crank but the piston helps,ports can be much wider.

 

[Keith Gandy]

What piston do u use in the 064 Jason?

 

[awol]

281?!

 

[awol]

A 288 piston takes a 660 to another level that can't be reached with a stock piston.

Just another bit of proof that Huskys are better, huh?

 

[jmssaws]

Just another bit of proof that Huskys are better, huh?

There pistons certainly are.

Put there good parts in a stihl and you have a super saw

 

[jmssaws]

What piston do u use in the 064 Jason?

I use a 064 oem piston. There wide and long but a 281 piston is a good idea. I'll check into that.

 

[awol]

The single ring with gap over the in port really makes it easy to lay out and add ports.

 

[awol]

The 281s skirt wont quite clear the crank throws, have to machine a little off. The jug also has to be dropped quite a bit, so the intake duration is longer than what a work saw needs.

 

[jmssaws]

The 281s skirt wont quite clear the crank throws, have to machine a little off. The jug also has to be dropped quite a bit, so the intake duration is longer than what a work saw needs.

I raise most stihl intakes,they all have more intake duration than I like.