NH350 piston ring size.

[dennis.t]

I broke a piston ring re-fitting the barrel on my 1956 NH350 today. I see that Drags sell piston ring sets but they stock standard/ 20/40 and 60 oversize. My piston has +30 clearly stamped on the crown. Do I need to find +30 rings if they exist?
Many thanks, Dennis

[dave.owen]

Try Cox and Turner, Somerset. You will need the piston number

[dennis.t]

Dave,
Thank you for that information. I may have found a supplier but if that falls through I will contact Cox and Turner.
Dennis

[Roger Gwynn]

You can gap +.40 rings to suit as long as they are conventional rings, not multi piece Cords type

[nevhunter]

Remove equally from both ends. Nev

[dennis.t]

By a happy coincidence a member near me was selling a +30 used piston and a new old stock piston ring set on eBay and I was the lucky winner of the auction.
Rings fitted to my piston and the barrel fitted. The piston I bought is a useful spare.
Dennis