Right guys this might sound a stupid question to some of you but this is the first time iv ever built high performance engine (zetec turbo) so obviously want everything to be spot on.now iv gapped the top and middle piston rings no problem but just want to know about the oil ring.with it being a 3 piece do the 2 silver rings need gapping the same as the top and middle ring? And im not sure if you will see in the pics or not but the gold zig zag ring overlaps itself a fair bit do i just cut this so each end butts together?

 

Evening bump

 

NO the oil ring ends don't need gapping, you need to squeeze all the ziggy part in the groove when fitting the pistons in the bore/s.
tabetha

 

the thin bits of the oil control ring still need gapping tho!

 

Although chances of them needing any work is very slim.


But the instructions for the rings would tell you all this info ?

 

Cheers tabetha but whats the best way of doing this? Iv seen people do it with long noes pliers before to scrunch the ziggy bit together untill it fitted in the groove a a whole if that makes sense?

 

There was no info in the box of rods or pistons hence why i asked as i dont want to fook anything up

 

You dont scrunch anything.

The ziggy bit is butted end to end. Then the upper and lower ring is installed.

Any proper ring set should come with instructions as to ring end gap, and end gap positions.

 

Agreed, don't crunch anything, never a good idea

I understand why your having problems though as it confused the hell out of me when I built my cvh, I bought goetze rings and all the pack showed was a diagram if the ring positions. I think Rob DOHC had a similar problem and I don't think he used cheap rings either.

 

Oh right cheers chaps,im just using the rings that came with the wossner pistons if thats any help? nms bored the block to piston size for me and oli wrote down what piston ring gap i should do them to,but didnt know if that ment the top and bottom oil ring also.as it was about a year ago whdn i had the machining done.and where should the ring ends sit? Or is it different on each set up.would you suggest on buying some different/better rings?

 

How do you mean where should the ring end sit? if you mean the 2 thin rings with the wavy ring? One thin ring should sit 180 deg from the other, and the wavy ring buts at 90 deg to that!

Wouldn't bother buying new rings as they will probably be the same.

If your concerned about anything I would give the lads at NMS a bell, sure they won't king answering any questions a year down the line.