closed port 50 51 55 saws

[gray top 40]

hi guys, was wondering if anyone has used the hyway closed port c/p on a 50 51 55 series saw. and if it was a better runner than the 46mm open port? considering doing this and wanted to know if anyone has. thanks, gray top 40

 

[CausticUC]

Works fine, just a bit of a power difference.

 

[gray top 40]

Works fine, just a bit of a power difference.

thanks causticUC, does the closed port lose torque mostly? and the rest of the power band stay the same? thanks again. GT40

 

[mountainlake]

Rancher 55 open port are dogs. No torque . Steve

 

[CausticUC]

Mountainlakes' response is missing equipment mix for context.

You should probably read through: https://www.arboristsite.com/community/threads/open-port-closed-port.118282/

Closed port with the windowed piston is the higher cc combination, it is also the more expensive and difficult one to find.

 

[BigDee]

I put a Hyway closed port kit on a 51 body and it was a great success, stronger than an open port and about the same as a stock 45mm closed port. The weak spot was excessive squish. I had significant material removed from the cylinder base so I could still use a gasket. It had high compression right from the start. I did not have it long enough to know how it broke in. Soon after I built it I showed it to a tree guy who had come to buy a 288. He took my new 55 too. I would do it again, but the cost is quite a bit higher than it was when I got mine from HL supply on a good sale.

 

[gray top 40]

I put a Hyway closed port kit on a 51 body and it was a great success, stronger than an open port and about the same as a stock 45mm closed port. The weak spot was excessive squish. I had significant material removed from the cylinder base so I could still use a gasket. It had high compression right from the start. I did not have it long enough to know how it broke in. Soon after I built it I showed it to a tree guy who had come to buy a 288. He took my new 55 too. I would do it again, but the cost is quite a bit higher than it was when I got mine from HL supply on a good sale.

thanks, great info gray top 40