running one ring instead of two??

[Davey83]

Hey everyone, I once read on another forum that you could run one piston ring instead of two to lower piston drag and get a little bit more power/revs out of your saw, the particular saw I'm talking about is an 046
however it seems its not a common mod to make and I feel that I would not like to make the mod before confirming its safe to do, I was considering putting a fresh set of rings in it and would run one caber if I was to do it.
thanks.

 

[mdavlee]

You can. I have done it so transfers could be placed how I want. Never had a problem like Redbull

 

[Davey83]

You can. I have done it so transfers could be placed how I want. Never had a problem like Redbull

would you say it was a worth while thing to do though, I don't make a living out of saws I just heat my house and love to tinker and monitor gains to be had out of simple mods, its a hobby...
I don't plan on altering ports, possibly a gasket delete depending on squish

 

[mdavlee]

If no porting to be done I wouldn't.

 

[Davey83]

ok I might just go with the two ring idea then, thanks for the imput.

 

[jb-chainsaws]

As I've mentioned in other threads my 044 work saw that gets hammered all day most days is running only top ring, however I've also ported it and it's running a dual port muffler, and tuned accordingly. It all depends on the saw and the application

 

[Moparmyway]

well you do have an issue of free port. some would argue that matters some would say it's not big enough.

I bought a 661 not knowing the bottom ring had been taken out. It had low compression so I suspected something was up. I ran it for a while. Twice it just stopped running mid cut. So I took it apart, seen that it was missing the bottom ring. Installed one. No problem since. Maybe it works better on other saws. I dunno. But that is what happened on the 661. Maybe it was outside the specs of the mtronic? who knows.

Hmnnn .....................
An Ohio saw ??

 

[CR888]

I run 2 rings on pistons that have two grooves however I've tried just running 1 top ring on some ported saws and you get a few more RPM's and power can be good. But in Aussie hardwoods that load the saw bringing the RPM's right down I find 2 rings 'feels' like its making more power. Give it a try and swap to see what you like best. Its a better way to find stuff out than just internet opinion.

 

[jb-chainsaws]

I run 2 rings on pistons that have two grooves however I've tried just running 1 top ring on some ported saws and you get a few more RPM's and power can be good. But in Aussie hardwoods that load the saw bringing the RPM's right down I find 2 rings 'feels' like its making more power. Give it a try and swap to see what you like best. Its a better way to find stuff out than just internet opinion.

Well said, go try both and see which you prefer!