| Re: 1977 GMC Vandura Scamper [message #344612 is a reply to message #344594] |
Thu, 27 June 2019 15:19  |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
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Jerry,
While I cannot help you with regard to your Vandura, I can advise you relative to starting and running the motor. This is something I have said several times before to individuals that were about to start an engine that has been sitting for a long period of time. So, here it is....
Do not even turn that engine over until you get oil to the bearings. Gravity is your enemy. Over long periods of time gravity will drag oil off of bearing surfaces leaving them dry. If you prime the carb, and turn it over for immediate start, it will run for a period of time with out lubrication doing damage to bearing surfaces. Change the oil and filter to new 5W30 of your choice. Pull the distributor and turn oil pump with an electric drill until oil comes out of the rocker arms. This may take a while, but will insure oil to all bearing surfaces. Then pull the plugs and squirt oil in the cylinders. Now, with the plugs out, open the throttle and turn the engine over until you have good oil pressure. NOW you have oil on the bearing surfaces, and it is safer to put the plugs in, and start the engine. Bring engine to 1500-2000 rpm immediately to get oil to the camshaft. The 5w30 I mentioned earlier will flow quicker to your bearings. Now, if you wish you can change oil to your choice of oil weight. I've seen to many engines that sat a long time get a quick start, appeared to run good, only to be followed, within a couple hundred or more miles, a rod or main bearing go out. IMO, because of a lack of adequate lubrication on initial start-up. OH, BTW, in the case of OHC engines, if oil pump is not available through the distributor, just pull the plugs and turn over until you see oil at the cam/rocker arms. It won't hurt anything to do this, and may save an engine. JMHO.
Larry 
78 Royale w/500 Caddy
Menomonie, WI.
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