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#76049 04/07/2007 9:10 AM | Joined: Feb 2007 Posts: 8 New Guy | | New Guy Joined: Feb 2007 Posts: 8 | I would like to know if I still have to pre prime the oil system on an engine that has sat for an extended period?. The engine is 235 and was not rebuilt but sat for about two years.
thanks for any advice. | | |
#76050 04/07/2007 11:52 AM | Joined: Mar 2007 Posts: 3,371 Crusty Old Sarge | | Crusty Old Sarge Joined: Mar 2007 Posts: 3,371 | It would never hurt, the main idea of priming the engine is to provide oil to dry bearings and journals during the initial start up. Being that this engine is broken in most of the wear patterns are established so it's not as big an issue. You should at least change the oil and filter to start fresh. good luck.
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#76051 04/07/2007 1:19 PM | Joined: Feb 2006 Posts: 395 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 395 | pull the spark plugs and turn over until preasure comes up...doc | | |
#76052 04/07/2007 2:38 PM | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Ditto but change the oil first.
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#76053 04/07/2007 3:00 PM | Joined: Oct 2005 Posts: 1,317 Shop Shark | | Shop Shark Joined: Oct 2005 Posts: 1,317 | Just a thought....good advice from Tuts 59 and Doc 41.....but why take a chance? The few minutes you spend pulling the distributor is going to be a lot less time than replacing a bearing. Even if you don't hand rotate the engine a couple revs, you're at least going to have the oil pump primed and everything partially lubricated with oil.
You would be best to spin the pump with the OLD OIL, remove the plugs, give it a couple squirts with Marvel Mystery oil in each cylinder, hand rotate the crank a couple times....drop in the distributor, spin it with the starter, pop in some new plugs, prime sparingly with starter fluid, and get the engine fired.
Once you've got it fired and heated up, drain the oil, clean out the oil filter can, add new filter and make sure you soak it and fill up the filter can. The bypass filter doesn't filter all the oil at once but it will bleed off oil pressure to the mains, until it gets filled. I found that totally bypassing the filter gave me 5-7 psi more operating oil pressure.
These old engines are tough....why not give them the best possible chance to start up and provide years more of good service. I try to remember that "the hurrier I go, the behinder I get."
Hope this helps.
Dave | | |
#76054 04/07/2007 11:57 PM | Joined: Feb 2007 Posts: 8 New Guy | | New Guy Joined: Feb 2007 Posts: 8 | Thanks guys, I thought that I should probably treat the engine with kid gloves, as it sat so long. | | |
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