Pistons and timing chains

[Stagdad]

Just got my sump off and can see 18599A and AE cast in the pistons ,is ther a way of telling if they are over sized from this and am i right in thinking they arethe hepalite pistons?

Chains,can some one tell me how muchmovement is left on these tentioners .I thought i had german chains butthey have got nothing on the links to say what they are.

Cheers Steve

[V Mad]

imported post

Steve, oversize pistons usually have 020 etc stamped on the crown.

The tensioner is a long way out and something needs to be done. New chain at least, plus usually the crank sprocket is hooked and needs replacing.Check surfaces of all chain guides and tensioner nose; if heavily grooved then replace.

[Stagdad]

imported post

Thanks Chris ,Can't see the crown as i'm not taking the heads off .

You have just confirmed to me that i need to fit the new chains that i have had sitting on the shelf for 2 years (rolons) and all the other bits needed(Tony Hart kit).

Cheers Steve

Decided to get the Iwis chains instead but i will still have to fit the new rolon tentioners if the renold ones fitted are too worn