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p.mole1
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K series pistons

Accralite or Omega? I have heard that Omega rings are not the best? Also I am a bit concerned that the gudgeon pin is held in by circlips. My experience of circlips is not good,Mini's and TR6  used to have problems with circlips jumping out of the grooves and destroying the bore. I am assuming this is not a problem on the K series?  The 1.8 has quite a long stroke so the piston speed will be quite high are all forged pistons fully floating? is this something I should worry about 

Wrightpayne
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You need a chat with Dave Andrews aka oilyhands

ncm
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In 35 years of running Lotus twincams I've never had a problem with circlips escaping. You do have to make sure that they are fully seated and fitted the correct way round.

p.mole1
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Thanks I'm paranoid now, I doubt I'll ever make more than one lap of a track day without worrying my engine will blow up. I've built 2 bomb proof disappointingly slow engines and one that goes like stink with a life measured in hours. 

oilyhands
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The circlips problems with Minis are due to incorrect orientation, if the clips were inserted with the circlip gap at the side then the accelerative and decelerative forces tend to close the circlips slightly allow them to mislocate, if the gaps are oriented towards the top or bottom, this cannot happen. Circlips are used commonly on most racing engines with few issues. I have never experienced a cirlcip problem with Omega pistons in the 40+ years I have used them.

Oily