New Piston & Cyl Kit - Low Comp

[AUSSIE1]

Evan, just went back and had a look at the photo's.
The top photo it is correct.
The second photo for some reason it is upside down.

 

[Evan]

i went back and looked to. i can tell the lower ring is upside down. i can barely see it well enough to tell.

but i doubt this would cause compression to fall way below normal

 

[blsnelling]

i went back and looked to. i can tell the lower ring is upside down. i can barely see it well enough to tell.

but i doubt this would cause compression to fall way below normal

It wouldn't even go together with the ring upside down.

 

[wigglesworth]

It wouldn't even go together with the ring upside down.

With a big enough hammer it would!!!

 

[blsnelling]

With a big enough hammer it would!!!

After the ring broke off.

 

[stihl038x2]

Measure your piston & make sure it matches the jug !maybe you have a MS260 cyl & 026 piston ???

 

[wigglesworth]

After the ring broke off.

then it would be one of them go fast 1 ring piston's LOL

 

[blsnelling]

then it would be one of them go fast 1 ring piston's LOL

 

[Dan_IN_MN]

While you're at it check ring gap in the cylinder.

 

[woodyman]

i went back and looked to. i can tell the lower ring is upside down. i can barely see it well enough to tell.

but i doubt this would cause compression to fall way below normal

I think you need glasses Evan:hmm3grin2orange: I don't know why I posted them,I guess because I can and I like posting pics.I had no problem with mine but I used the OEM piston and got the rings from Baileys and used a base gasket.No compression has to be the piston & ring if everything else was put together right.But like said before it won't or shouldn't run at 60 psi.

 

[theoldfox]

Pic of exhaust port

just for the sake of sanity pull your muffler and post pics.

thank you

Couple of pics with muffler off looking down port: one showing rings and the other with piston at BDC. Not too clear but done for the sake of sanity

 

[AUSSIE1]

You haven't given any feedback as to whether you have put any of the advise into effect.
Start of with the gauge and if you reckon this is fine, pull that cyl.
Until you do, you won't get much if anymore feedback.

 

[belgian]

I may be mistaken but that second pic sure doesn't seem to show a smooth & shiny cylinder wall....

 

[stihlboy]

yeah the second pic doesn't look too good.:censored::censored:

 

[ironman_gq]

looks like a straight gassed saw or one that lost the plating or hooked a ring on the intake side

 

[Justsaws]

Hard to see but I think you need to pull that P/C off and have a better look. The muffler and the P/C do not look good for such a small amount of run time.

I am assuming that you did not clean the muffler to bare metal out before the rebuild.

What exactly did you repair/replace on the saw before swapping the P/C out?