Post up your ported cylinder Artwork

[ZukiRyder440]

Then used my ported Asian 660 (Cross Cylinder, dynoed at 8.6Hp) to quickly noodle some of the larger rounds.

Thats a biggin right there!

 

[MustangMike]

Dad and I are planning on going down to PA next year, gonna be a good time.

Keep me posted. I'm not as fond of long trips as I used to be, but there is nothing going on around here anymore!

Also, in the Spring I was having some well issues, so I could not even think about it. Ended up getting a new controller (3 phase) and pump (850 feet down) and the problems have been resolved. Was not cheap, but it is fixed!

 

[smokey7]

034S just finished up
View attachment 418039View attachment 418036View attachment 418037View attachment 418148

I think you might be thru the plating on that jug on the exhaust side

 

[Steelie90]

I think you might be thru the plating on that jug on the exhaust side

I couldn’t tell you why it looks like that. But it’s not thru the plating. This jug had light transfer on Exh side, I cleaned it then ran with new rings n slug for a tank or 2 before I decided to port .
Here is a pic after cleanup before running and port work.
I have seen it happen on a few cylinders with little run time after cleaning up aluminum transfer, once rings set it usually cleans up.

 

[farminkarman]

562xp MKII

 

[Red97]

Bridges/fingers in a 7310 cylinder

 

[Shane¹]

View attachment 435097

Bridges/fingers in a 7310 cylinder

Echo or dolmar?

 

[farminkarman]

Echo or dolmar?

Echo

 

[Red97]

Echo or dolmar?

Echo, even has some stihl parts too...

 

[Moparmyway]

Case around that nice crankshaft looks thin …….

 

[Red97]

Case around that nice crankshaft looks thin …….

Let's just hope it seals....

 

[MustangMike]

Anatomy of a failure: My first hung ring!

This saw started out as an OEM 066 round top that I brought back from the dead. It ran good, but the OEM P&C were slightly scored, even though the rings were free.

So, when the Cross Cylinders with Randy's influence came out, I got one and installed it. The saw ran very well and is the one on the HL Supply website video promoting the Cross P&C. It ran well for several years and was one of two 066/660s I used as a "tag team" for milling (both set up with 36" light bars with full comp square file). (The other saw is the Asian 660 Doc Al built for the competition).

Last fall, in the middle of milling a White Oak board, it abruptly stopped. I tried to re-start it, but it obviously did not have much compression, so I just replaced it with another 660.

Well, today I decided to rip it down to see what happened. I'm always VERY careful to make sure exhaust ports are properly beveled, even if I did not touch them, but I guess I did not pay enough attention to the upper transfers.

I have spare Meteor pistons in my inventory, and an OEM 066 and an OEM 660 cylinder too. But I may just clean this one up and re-use it. I know the squish is .020 w/o a base gasket, it ran strong, and the transfer ports look great! (I don't have an angle grinder). The minor damage to the squish band would be easy to repair, and if I play with the exhaust and intake ports a bit if should run very strong!

I'm going to pull out the other two cylinders and decide if I want to make it OEM again! Enjoy the pics of my FIRST hung ring failure!

 

[Moparmyway]

Do you think it hung a ring on the transferr port or do you think the ring pin fell out ?

 

[MustangMike]

Not a bad thought, and I wish it were true (as it would "absolve" my build), but the pin for the ring is still all the way in. The damage to the piston is from the top ring being hung (not from the pin, which is still in place) which pinched the lower ring causing the loss of compression.

The pin is in line with the forward edge of the piston window, visible in picture #2.

However, I put Meteor pistons in most of the subsequent ones I built, and none of them have failed.

 

[jacob j.]

Case around that nice crankshaft looks thin …….

It's going to be coated with Joe's patented Dead Kittens©® Technology.

 

[Moparmyway]

Not a bad thought, and I wish it were true (as it would "absolve" my build), but the pin for the ring is still all the way in. The damage to the piston is from the top ring being hung (not from the pin, which is still in place) which pinched the lower ring causing the loss of compression.

The pin is in line with the forward edge of the piston window, visible in picture #2.

However, I put Meteor pistons in most of the subsequent ones I built, and none of them have failed.

I didn’t see where the ring got hung in the upper transferr …….. that’s why I was wondering.

Can you get any closer pictures of the upper where it hung ?

 

[MustangMike]

Sorry, but it is already back together. Almost can't notice it, the upper transfer toward the intake. Just a small shinny mark.

 

[MustangMike]

It's Alive!!! Decided to just use the same cylinder as it was easy to clean up and I know how it runs. Considered doing some port work to it, but what I could have done was very minimal, so I left it be. Just smoothed out the compression ring of the cylinder, beveled the upper transfers a bit, and smoothed the intake a bit (where it ingested some metal). (See picture #3 of prior post).

Re-used the OEM piston pin and clips. The OEM piston pin (which is tapered on the inside on both ends) is only 0.4 oz, the Meteor piston pin is 0.7 oz. Less weight = less vibrations and longer bearing life.

Since I don't have a metal lathe or machine shop, I figure out other ways to get things done, smoothed the compression ring with an AM piston with some sandpaper Gorilla taped to the top. Worked it back and forth with 2 heavy duty paint stirrers. May not look pretty, but it gets rid of the high points, and it works!

My HF foot pedal Dremel was handy for adding the bevels.

Started right up and seems to run nice and smooth. Squish measured a hair over .020 with no base gasket. .

 

[Red97]

P100 6cube/vintage

 

[smokey7]

I couldn’t tell you why it looks like that. But it’s not thru the plating. This jug had light transfer on Exh side, I cleaned it then ran with new rings n slug for a tank or 2 before I decided to port .
Here is a pic after cleanup before running and port work.
I have seen it happen on a few cylinders with little run time after cleaning up aluminum transfer, once rings set it usually cleans up.View attachment 434564

All good that looks much better. It makes sense now that you say it that way. I've probably had a few look like that just never saw it.