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Engines / Lister SRM oil leak in way of cooling air.
« on: July 20, 2013, 05:20:55 PM »
Hi there It's me the one with the Lister SRM3 which I have in my sail boat and I was sold the wrong sized pistons last year.
The latest update is the engine is working well though I have had some overheating due to the louvres in the cooling air outlet of the engine box. I have since removed them and so far the engine has not overheated again. However I have some oil spatter coming out with the cooling air, ( makes a bit of a mess on the Teak flooring). Thought at first it was coming down the head fixing studs that also hold down the rockers, so I resealed the thin gasket beneath each rocker assembly. Thought the leak was solved but no such luck! Am running out of ideas. There seems to be small drops of oil collecting on the top of the cooling fins and this is being picked up as the cooling air exits. Could I have got the gasket and shims the wrong way round? Though I can not see how oil could come out of the top of the cylinders. Could I have a cracked cylinder/cylinders or head/heads. Has anyone out there experienced this problem and worked out why.
The latest update is the engine is working well though I have had some overheating due to the louvres in the cooling air outlet of the engine box. I have since removed them and so far the engine has not overheated again. However I have some oil spatter coming out with the cooling air, ( makes a bit of a mess on the Teak flooring). Thought at first it was coming down the head fixing studs that also hold down the rockers, so I resealed the thin gasket beneath each rocker assembly. Thought the leak was solved but no such luck! Am running out of ideas. There seems to be small drops of oil collecting on the top of the cooling fins and this is being picked up as the cooling air exits. Could I have got the gasket and shims the wrong way round? Though I can not see how oil could come out of the top of the cylinders. Could I have a cracked cylinder/cylinders or head/heads. Has anyone out there experienced this problem and worked out why.