What to do ? Discontinued cylinder, vintage Echo

[Jeekinz]

Was the new piston grade matched?

Grade matched? Its an old chainsaw, I bought aftermarket from Red Barn.

 

[Jeekinz]

Have you checked squish?

No, why? Nothing has changed except a top end kit.

 

[Bill G]

They have, early Indian motorcycle cylinders, from the machine shop for locust Grove restoration.

Were those blind cylinders?

 

[J D]

No, why? Nothing has changed except a top end kit.

The squish may have been excessive to start with, add to that a piston thats a few thou shorter & doesn’t have a layer of carbon on top & you could well have 0.050" more squish than what's ideal (& a bunch less compression)

 

[sean donato]

Were those blind cylinders?

Yes.

 

[singinwoodwackr]

Yes.

how can you tell? White cane? dark glasses?

 

[singinwoodwackr]

Grade matched? Its an old chainsaw, I bought aftermarket from Red Barn.

well, an A piston in a C cyl will be a bit sloppy and may not hold compression well.

 

[sliceoflife]

What does "blind" mean with regard to a cylinder?

 

[Jethro 2t sniffer]

What does "blind" mean with regard to a cylinder?

Non removable head

 

[sean donato]

how can you tell? White cane? dark glasses?

Not at all, the conversation he had with me all the while facing the wall.....

 

[ballisticdoughnut]

I've been around 2 stroke bikes for 30 years, so Im familliar with plating and who to go to, etc.

My 452VL ran ok but was a bit low on compression. I did a top end, crank seals, etc and still little compression. (Not measured but pulling the cord there's zero feedback, runs though) Cylinder is obviously worn. No scoring or anything obvious. What do you vintage guys do in this situation? A replate at Millennium Technologies (if they'd even do it) is up to $320 now and you never know what you get used off Ebay.

View attachment 1120194

Have you done a compression test with throttle held at WOT? I’m curious to see some numbers.

 

[ballisticdoughnut]

Was the new piston grade matched?

Could be wrong, but I don’t think Echo does/did the ABC thing. Know that was common on older German and Swedish saws that used Mahle and KS top ends “back in the day”.

 

[Bill G]

Non removable head

Exactly

 

[Bill G]

Yes.

What model Indian as most I have seen are not blind cylinders. Also I am far from a bike guy but I am thinking they were iron bores

 

[singinwoodwackr]

Could be wrong, but I don’t think Echo does/did the ABC thing. Know that was common on older German and Swedish saws that used Mahle and KS top ends “back in the day”.

Ah…didn’t know that.

I do have a duplicate saw for him if needed. However, freight might be a joke

 

[singinwoodwackr]

What model Indian as most I have seen are not blind cylinders.

I see.

 

[singinwoodwackr]

Said the blind man.

 

[singinwoodwackr]

As he took his hammer and saw…

 

[J D]

Not at all, the conversation he had with me all the while facing the wall.....

So the conversation with you... like talking to a brick wall

 

[sean donato]

What model Indian as most I have seen are not blind cylinders. Also I am far from a bike guy but I am thinking they were iron bores

If memory serves it was a powerplus motor cycle, cerca 1920's.