maltatrucker Posted July 28, 2009 Share Posted July 28, 2009 Hi all Would you believe the DT has done the piston and rings again and it's a diffrent engine. Any way the thing is I took the head and barrel of(getting good at this) and found rings shagged and piston knacked but what I found strange is there is oil in the crankshaft as far as I know there should be no oil there,as I turn the engine over with the kickstart the crank comes up soaked in oil.Any ideas lads,is it a full strip down and seals or worse as in crack between crankcase and gearbox. Cheers all Daz Link to comment Share on other sites More sharing options...
blackhat250 Posted July 28, 2009 Share Posted July 28, 2009 I turn the engine over with the kickstart the crank comes up soaked in oil. Hi daz , howz the sun [weve not seen it at all this summer] Now .. the oil u be seeing is gearbox oil, smearing a section of crank [ bottom side wen sitting still] shudn!t be any oil in there. - i thot it was a case of gearbox oil level too high" . check box level just to make shure" . [coz i thot crank dipping in oil wud coz drag] . wot did the rings then ? lack of two-stroke . did u check pump? or are u pre-mixing.? or u blaming the brother again [ wot a memory i hav eh] is the barrel scored ??? Link to comment Share on other sites More sharing options...
Twin Shock Posted July 28, 2009 Share Posted July 28, 2009 If you have gear oil inside the crank area you probably have a leaking crankshaft seal sucking oil into the 2 stroke side. You must have a good seal on both sides of the crank shaft. Do a pressure test. Link to comment Share on other sites More sharing options...
maltatrucker Posted July 29, 2009 Author Share Posted July 29, 2009 LOl not me brother this time,the engine was second hand and it did heat seize on me once after a full day running around in really hot weather(went up to 41 celcius last week)but left it for a half hour and was ok,funning thing is I premix myself at 25to1 lovely loads of smoke behind me lol barrel ok so might as well get new crank seals and do it properly. thanks all Daz Link to comment Share on other sites More sharing options...
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