Husky 141 Rebuild - Aftermarket Piston Issue

[pleasant]

2 hours ago, adw said:

I have to confess i use the Stihl circlip fitting tools to fit tailless clips, they work really well.

Ditto....

[rhonddaboy]

Here's an image showing scoring at the edge of one of the channel ports. The depth of scoring is abot 1mm beyond that - to the top of the cylinder it is smooth despite visible discoloration.  Well, have a replacement piston, wrist pin and circlips. Will use some 600 grit on bore and rebuild. Will let ypu know the outcome in the next few days.

 

[spudulike]

I reckon that the score is deeper than you imagine and you won't have much compression once rebuilt but stand to be corrected - pics can be misleading!

[adw]

It dont look too good sir.

[Muddy42]

1 hour ago, adw said:

It dont look too good sir.

Agreed

[rhonddaboy]

You could be right. Anyway will give it a go - not to prove you guys wrong - but as as a personal challenge.  When completed I will upload hopfully a video of it performing, or not. Either way 50/50. If it doesn't suspect I'll get a Farmatech crancase assy since this saw is only used lightly for firewood.  I know... few days time I may get: ' I told you so'.  😉

[adw]

I don’t understand why you would buy another piston and put it in that cylinder only to probably destroy it? Why not spend the money on a cylinder piston kit, you say it’s only light use so an after market kit will probably be fine, plus every time you split the cylinder from the base you distort the seals on the bearings.

[pleasant]

On 25/03/2023 at 13:52, rhonddaboy said:

Here's an image showing scoring at the edge of one of the channel ports. The depth of scoring is abot 1mm beyond that - to the top of the cylinder it is smooth despite visible discoloration.  Well, have a replacement piston, wrist pin and circlips. Will use some 600 grit on bore and rebuild. Will let ypu know the outcome in the next few days.

 

That's a gouge....not a score in my book. 

[spudulike]

Farmtec cylinders are as hard as a warm Camembert! The Hyway ones are much better and surprise surprise, they are more costly!

[pleasant]

48 minutes ago, spudulike said:

Farmtec cylinders are as hard as a warm Camembert! The Hyway ones are much better and surprise surprise, they are more costly!

I beleive the same steel is used in the manufacture of chinese screw heads.