Surface ground rings

[wigglesworth]

Anybody ever made there own thin rings?

I surface ground a junk one to see if it would work and was quite suprised how easy it was. Took it from 1.5mm to 1mm very quickly.

Now the question is, will it work? I have a top end coming, for which the rings are NLA. Anything I need to be aware of? I hate to destroy a virtually irreplaceable top end. :help:

 

[little possum]

What if the rings were fine in that topend? You know you will never wear out a set of rings

 

[wigglesworth]

What if the rings were fine in that topend? You know you will never wear out a set of rings

Haha.

Different top end altogether muh friend.

Good to hear about those ones though.

And yea, ur right. I'll probably never wear a set of rings out.

 

[67L36Driver]

Can't think of a reason for it not to work.

The rings seal against the cylinder wall and the bottom ring land. Make shure they are clean and smooth, ring and piston.

 

[pioneerguy600]

I have used them in square end rings, not notched end but I can`t see where that would make any difference as long as the notch fits around the ring end pin properly.

 

[Fred482]

I've used this method on other engines with good results. I've only used it on cast rings, I wouldn't have done it on some of the treated, coated, chromed rings. I doubt it'd hurt, but I've seen the chrome peel off on a lot of GM 6.2's from the edge, it indicates to me that it didn't bond on the machined surface properly. Could just be from normal heat stress and wear too.

 

[Mastermind]

That was a damn good idea Jer.

You are the man ya know.

 

[komatsuvarna]

That was a damn good idea Jer.

You are the man ya know.

Master wigglesworth himself!!!!!

 

[jockeydeuce]

Jeremy

If you are thinking of rings for the incredibly rare top end you have coming from me, ...I believe the correct rings are not cast iron, like we are used to seeing in most saws....I think they're a steel alloy.

Maybe someone will correct me if I'm wrong, but Cast iron is way too brittle for a thin ring.

 

[Jacob J.]

Jeremy

If you are thinking of rings for the incredibly rare top end you have coming from me, ...I believe the correct rings are not cast iron, like we are used to seeing in most saws....I think they're a steel alloy.

Maybe someone will correct me if I'm wrong, but Cast iron is way too brittle for a thin ring.

Correct. Tool steel is used for *most* thin rings. Wiseco finishes a lot of their thin rings with chrome.

 

[kevin j]

Are they rectangular rings? Some motorcycles ones are tapered on one or both sides, so that would not work . But for flat sides rings, seems like it would work fine. I'd surface the top side and leave the bottom side as factory finish as that is where the sealing is.

 

[Mastermind]

Rings.........damn ol' rings........

I just tore down a saw that the second ring broke in. Brittle little suckers.......damn rings.

Making a cast ring thinner would not be a good idea.......huh?

####in rings..........####........destroyed muh pretty port work......damn ol' rings.




Well I feel better now.

 

[jockeydeuce]

One of my favorite "fix it in the bush" logger stories, is a guy told me he was broke and needed rings for his thin ring 2100 Husky, so he could go to work and get a paycheck........

He found his kid's "Slinky" and made a set of rings out of it to get him through to that first payday!

 

[Dan_IN_MN]

Rings.........damn ol' rings........

I just tore down a saw that the second ring broke in. Brittle little suckers.......damn rings.

Making a cast ring thinner would not be a good idea.......huh?

####in rings..........####........destroyed muh pretty port work......damn ol' rings.




Well I feel better now.

If you just wouldn't 'monkey' around with them and leave them stock none of this would happen!

:big_smile:

 

[Dan_IN_MN]

Anybody ever made there own thin rings?

I surface ground a junk one to see if it would work and was quite suprised how easy it was. Took it from 1.5mm to 1mm very quickly.

Now the question is, will it work? I have a top end coming, for which the rings are NLA. Anything I need to be aware of? I hate to destroy a virtually irreplaceable top end. :help:

What about machining the ring groove in the piston larger/wider? You'd have to remove the pin.

 

[67L36Driver]

One of my favorite "fix it in the bush" logger stories, is a guy told me he was broke and needed rings for his thin ring 2100 Husky, so he could go to work and get a paycheck........

He found his kid's "Slinky" and made a set of rings out of it to get him through to that first payday!

And, why not, high carbon spring steel, gapless to boot.



Do they still sell slinkys in the toy dept.?

 

[Mastermind]

If you just wouldn't 'monkey' around with them and leave them stock none of this would happen!

:big_smile:

I was forced to port the saw......honest. :msp_sad:

What about machining the ring groove in the piston larger/wider? You'd have to remove the pin.

The thin rings are very desirable.......

 

[Dan_IN_MN]

I was forced to port the saw......honest. :msp_sad:



The thin rings are very desirable.......

Isn't a fat ring better than no ring? NAL.......

 

[AUSSIE1]

What about machining the ring groove in the piston larger/wider? You'd have to remove the pin.

Probably not something you want to do to anything rare I suppose, but removing the pin can be done and replaced in the centre so you can run the one ring only.

Great threads when you see people thinking outside the square!

 

[little possum]

A square cylinder... Great idear Al

I really do enjoy havin all this knowledge at my fingertips. Heck this morning I was gettin schooled on chainsaws at 5am on my way to work.