p.mole1 Posted August 14, 2019 Share Posted August 14, 2019 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 Link to comment Share on other sites More sharing options...
Wrightpayne Posted August 14, 2019 Share Posted August 14, 2019 You need a chat with Dave Andrews aka oilyhands Link to comment Share on other sites More sharing options...
ncm Posted August 14, 2019 Share Posted August 14, 2019 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. Link to comment Share on other sites More sharing options...
p.mole1 Posted August 16, 2019 Author Share Posted August 16, 2019 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. Link to comment Share on other sites More sharing options...
oilyhands Posted August 21, 2019 Share Posted August 21, 2019 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 Link to comment Share on other sites More sharing options...
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