Wanted A7 66mm +30 piston rings

[larryc]

My 52 A7 barrels are +20 and needs a re-bore, I have some good +30 pistons so need +30 piston rings for both pistons, I have looked on the web and can only find +20 and +40, does anyone have any for sale, or know where I can order +30's. Hope someone can help, Larry

[u28909z]

Although it may be considered to be bad practice, I had a similar situation with a pre unit T100, where I had a rebore to suit +30 pistons. In the end I fitted +40 rings suitably re gapped, and the bike has run perfectly well for 3000 miles.

Arthur

[a101960]

I have looked on the web and can only find +20 and +40, does anyone have any for sale, or know where I can order +30's. Hope someone can help, Larry

Yes, I think that you will have to use +40 rings. I am pretty sure +30 pistons and rings have been unavailable for quite some time because they are no longer made. For what reason I do not know.

[larryc]

Although it may be considered to be bad practice, I had a similar situation with a pre unit T100, where I had a rebore to suit +30 pistons. In the end I fitted +40 rings suitably re gapped, and the bike has run perfectly well for 3000 miles.

Arthur

Thanks Arthur, I think that will be the best option, thanks for the suggestion, Larry.

[Rocket Racer]

http://www.trademe.co.nz/motors/motorbikes/parts-for-sale/pistons-rings/auction-937849833.htm

some being listed over here. If you need a hand sourcing them pm me.

[larryc]

Thanks for that Rocket Racer, I have pm'd you

[Rocket Racer]

+30 rings on their way to you. 

[larryc]

Rings have arrived safe and sound cheers for all your help Tim.