bazz Posted December 3, 2007 Share Posted December 3, 2007 Hi, I'm confused about the different piston types. I'm revising my 2.5 12j N/A diesel engine and probably need new piston rings since i read everywere that they should be changed as a matter of course. I checked taper of cilinder bores etc and everything is well within limits, just needs to be honed. How do i find out if i have GKN or Hepworth pistons since rings are apparently different for these types. Bas Quote Link to comment Share on other sites More sharing options...
Phil Hancock Posted December 3, 2007 Share Posted December 3, 2007 See what name is cast in the underside? Quote Link to comment Share on other sites More sharing options...
bazz Posted December 3, 2007 Author Share Posted December 3, 2007 See what name is cast in the underside? Yep, that would seem logical but i cannot find anything in the underside On the top there is a number. ETC5043/3 Quote Link to comment Share on other sites More sharing options...
Phil Hancock Posted December 3, 2007 Share Posted December 3, 2007 If your engine has done more than 100K then stick new pistons in as even the NA lumps crack their crowns. Quote Link to comment Share on other sites More sharing options...
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