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Posted

SEP in Kegworth might be worth a go, but when I used them in 2013 they took forever to rebuild my crank. I mean it was months. I eventually gave up ringing them and started turning up to ask what was going on.


I think your question may be better answered on a more specialist forum though, they could point you to someone who has done this before and knows exactly what is involved.

Posted

No personal experience but this outfit seem to know their stuff.https://www.hthoward.co.uk/cylinder-liners/

Posted

Am I correct in the belief that your cylinders are an integral part of your upper crankcase requiring a total engine split before any machining can be carried out ? EDIT..Yep

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Posted

It is a massive job, and the liners are "wet" meaning the water runs around the outside of them (Have a look here). This is not a job for just anyone who resleeves motors, this is Serious Business.

Posted

There's a few engines on eBay circa 7-800, probably your best bet in reality.

 

My thoughts as well , get one with a guarantee if possible because I'm assuming there are loads out there that also have cracked liners ! I only found two 5EB ones on eBay but quite a lot of other models. No idea about compatibly.

Posted

So why do these things crack and what have Yamaha got to say about it ?

Posted

There's a company in New Zealand repairs them.


You just need a company that can machine them out, fit new ones, deck the block, and rebuild so in the short term probably cheaper getting another block and then another bike.

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