Ouch

[Trx250r180]

Was that piston in backwards ? or do 441's have the pins toward the exhaust ?Never been into one .

 

[PES+]

I meant the cylinder face doesn't look run on two of the pieces of ring but can see it on the third so must just be the orientation and lighting

 

[cuttinties]

Was that piston in backwards ? or do 441's have the pins toward the exhaust ?Never been into one .

On is exhaust/flywheel side the other is directly over the intake which is the one that failed

 

[Trx250r180]

On is exhaust/flywheel side the other is directly over the intake which is the one that failed

so it snagged a ring then and it broked ?

 

[cuttinties]

so it snagged a ring then and it broked ?

The locating pin said **** this I'm out, and the ring did a party dance. But it zigged when it should have zagged and broketed

 

[KG441c]

The locating pin said **** this I'm out, and the ring did a party dance. But it zigged when it should have zagged and broketed[/QUOT
Ya ive seen a few do that and I wanted to cry since one was a ks cylinder and the other a gilradano or however u spell it!! Lol

 

[cuttinties]

That sucks something vicious

 

[KG441c]

That sucks something vicious

Great thread! R u gonna follow the thread through with the rebuild and porting? That would be great! Id love to see someone do a thread on chamfering

 

[cuttinties]

Great thread! R u gonna follow the thread through with the rebuild and porting? That would be great! Id love to see someone do a thread on chamfering

I might but I need to talk to the owner and be sure he's ok with the build. I would prefer to split the case and be sure everything is solid. Parts for that would end up around $380 so it'll depend on what he wants to spend.

 

[KG441c]

I might but I need to talk to the owner and be sure he's ok with the build. I would prefer to split the case and be sure everything is solid. Parts for that would end up around $380 so it'll depend on what he wants to spend.

Ya I hear u! Between parts and port he will be on up there. Is that a 441c?

 

[cuttinties]

Ya I hear u! Between parts and port he will be on up there. Is that a 441c?

Standard carb saw.

 

[KG441c]

Standard carb saw.

Ive never ran one, do they port well?

 

[cuttinties]

Ive never ran one, do they port well?

I don't like the weight but they run pretty good ported.


I will add I've never had a standard carb and c to compare performance

 

[KG441c]

Okay well I hope he will give u the go and u follow the thread through. Appreciate the info

 

[cuttinties]

Okay well I hope he will give u the go and u follow the thread through. Appreciate the info

Well like I said it'll depend on what he's willing to spend. Chances he'll have it fixed and kept stock because of the cost of repair.

 

[Wood Doctor]

Major overhaul forthcoming. BTDT. Bearings and seals might be OK. Piston, cylinder, and rings are history.

 

[Marshy]

I wouldnt risk it, take the lower apart and replace bearings. That ring must have been one hard SOB because Ive never seen one so brittle and frag like that. I have seen plenty location pins dance out and rings clip ports in snowmobiles. Actually, the big guy with the moustache in my avatar had the same thing happen.

 

[cuttinties]

I wouldnt risk it, take the lower apart and replace bearings. That ring must have been one hard SOB because Ive never seen one so brittle and frag like that. I have seen plenty location pins dance out and rings clip ports in snowmobiles. Actually, the big guy with the moustache in my avatar had the same thing happen.

I appreciate your advice. But I'm already a step ahead of you.

 

[Andyshine77]

I had a 441 with the same failure. The goof balls kept trying to start the saw even with all the noise it was making.

 

[Marshy]

I had a 441 with the same failure. The goof balls kept trying to start the saw even with all the noise it was making.

View attachment 416555

RIP - Ring Impregnated Piston