cylinder head removal

[Z.hb71]

Check the cylinder wall for deep scratches . The ring could have put some deep scratches into the cylinder wall if it was pinched between the piston skirt and the cylinder bore. If the cylinder was scored you'll probably need to replace the cylinder sadly. Oh did the piston get damaged at the groove where the ring popped out? A lot of things to look at .

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[heraclitus7]

+1

Ok I'll check it out ..appreciate the advice

Wow you are being very persistent a lesser soul would have quit by now
Keep it up youll get there

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Can't quit ..not with all the help I'm getting.besides I find it a bit of a challenge..

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[heraclitus7]

Check the cylinder wall for deep scratches . The ring could have put some deep scratches into the cylinder wall if it was pinched between the piston skirt and the cylinder bore. If the cylinder was scored you'll probably need to replace the cylinder sadly. Oh did the piston get damaged at the groove where the ring popped out? A lot of things1 to look at .

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I do see some light scratches ..but l don't have the expertise to ascertain whether or not if replacement is needed.

 

[Z.hb71]

View attachment 47533I

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I do see some light scratches ..but l don't have the expertise to ascertain whether or not if replacement is needed.

Those little lines in the cylinder head are from the factory. Looks fine to me but anyone else chime in

 

[Scruffy]

I have seen worse. I would be most concerned with the area around the intake and exhaust ports and especially what looks like rough edges at the transfer ports. Possibility of the plating starting to flake off in these areas

 

[heraclitus7]

thanks for your valued replies i will hopefully reach a consensus based on how many say use it or replace it ..thanks again..

I have seen worse. I would be most concerned with the area around the intake and exhaust ports and especially what looks like rough edges at the transfer ports. Possibility of the plating starting to flake off in these areas

thank you for your reply.. it is welcomed and appreciated..

 

[Scruffy]

thanks for your valued replies i will hopefully reach a consensus based on how many say use it or replace it ..thanks again..

thank you for your reply.. it is welcomed and appreciated..

I would give it a try since all it will cost is the price of a new ring. If it doesn't work, at least it didnt cost much to try?

 

[heraclitus7]

thanks for your valued replies i will hopefully reach a consensus based on how many say use it or replace it ..thanks again..

thank you for your reply.. it is welcomed and appreciated..

thanks for your valued replies i will hopefully reach a consensus based on how many say use it or replace it ..thanks again..

thank you for your reply.. it is welcomed and appreciated. intake and exhaust ports ,is that the cylinder head or piston..thanks again.

I would give it a try since all it will cost is the price of a new ring. If it doesn't work, at least it didnt cost much to try?

yes that is good logic.

 

[Scruffy]

Transfer ports are the grooves in the sides of the cylinder head. Try some 1000 grit sandpaper and a little penetrating oil and make sure the edges of these grooves, as well as around the intake and exhaust ports, are a smooth as possible

 

[heraclitus7]

ok i will give it a try..thanks

 

[1Coopgt]

So when you run your finger around the inside of the cylinder on the walls or around the outside of the piston you don't feel scratches . That's good. Unfortunately all the pictures you posted showed the same view of the piston and the same angle of the cylinder. All the cylinder pics were looking at the intake port. None of the exhaust port . Same with the piston. All were looking towards the piston form the fly wheel side. The big thing is you shouldn't feel any scratches. You should see the cross hatch pattern in the cylinder walls which is normal.

Don't sand the cylinder walls. You need the cross hatch pattern ( those fine micro scratches) for the ring to seal against, works with the oil in the fuel. If you sand anything just the edges of the port openings.

 

[heraclitus7]

Ok thanks

 

[Scruffy]

So when you run your finger around the inside of the cylinder on the walls or around the outside of the piston you don't feel scratches . That's good. Unfortunately all the pictures you posted showed the same view of the piston and the same angle of the cylinder. All the cylinder pics were looking at the intake port. None of the exhaust port . Same with the piston. All were looking towards the piston form the fly wheel side. The big thing is you shouldn't feel any scratches. You should see the cross hatch pattern in the cylinder walls which is normal.

This is the pic that concerned me. Is it just me or does the thin area between the ports look damaged?

 

[1Coopgt]

View attachment 47536
This is the pic that concerned me. Is it just me or does the thin area between the ports look damaged?

Hard to tell because of the shadow. It would be nice to know where the ring was pinched between the piston and cylinder.

 

[Scruffy]

So when you run your finger around the inside of the cylinder on the walls or around the outside of the piston you don't feel scratches . That's good. Unfortunately all the pictures you posted showed the same view of the piston and the same angle of the cylinder. All the cylinder pics were looking at the intake port. None of the exhaust port . Same with the piston. All were looking towards the piston form the fly wheel side. The big thing is you shouldn't feel any scratches. You should see the cross hatch pattern in the cylinder walls which is normal.

Don't sand the cylinder walls. You need the cross hatch pattern ( those fine micro scratches) for the ring to seal against, works with the oil in the fuel. If you sand anything just the edges of the port openings.

Thats what i meant...just sand the edges and make sure they are smooth

 

[1Coopgt]

Where I drew the arrow is what I was wondering about . I don't know if its a scratch or the edge of a port .

 

[Seandonato73]

Run it. Feather the edges of the ports and transfers if needed like stated before. I've seen much worse looking cylinders then that.

 

[Scruffy]

Where I drew the arrow is what I was wondering about . I don't know if its a scratch or the edge of a port .

I was looking at this area. The edge looks crushed inwards

 

[Seandonato73]

Prolly where you got your ring jammed up. It's open transfers so it isn't really hurting much imo.

 

[Scruffy]

its not mine lol. may be fine tho as long as the plating doesn't start to flake off