Tomorrow im installing the crank, rods and pistons in my fresh 276cu in flathead. I have verns book on flathead ***embly and he just uses oil on the main and rod bearings. Is this a normal practice or should i use something else? I have lubriplate 105 and clevite 77. Any tips will be appreciated. Ive built a few motors before but for some reason putting this flathead together is making me nervous as ****. I wanted to add that the engine might sit for a few weeks before i can fire it, if that makes a difference on what you guys recommend
I used to just use oil but now I use dedicated ***embly lube on all bearings etc. The stuff is really sticky and will stay in place until the oil pump is sending pressurized oil to all those points.
I used Lubriplate also. Don't forget to pack the oil pump with grease so it starts pumping right away.
On fire-up oiling...I make up a delivery system of an old coffee can with a hose to a 1/4 pipe fitting and hook it to the rear bung where oil pressure gauge goes. I dump in 3 quarts the usual way, then right before blast-off time I pour the remaining 2 via the coffee can and screw the pressure gauge back in. This presumably fills the main gallery and dumps the surplus down through the pump. Oiled this way I see the gauge move on first turn of the starter and instant full pressure when the engine lights up.
I used to use Lubriplate but I tore down an engine that had been in storage for a few years and the grease had gotten dry and hard. I now use only Royal Purple ***embly fluid on bearings and valve train but still prefer engine oil on pistons and rings. I circulate oil before firing if possible but some engines just don't cooperate.
I used black molybdenum (in the TUBE! The can will get dust, dirt, etc. in it the short time it is open!) Used it since the mid '60s, but in the TUBE! One day at the shop, I had a sale going on a nice engine I had built 3 years prior, all pre-lubed with 'black Moly'. When I removed the pan, everything looked like brand new...then removed the con rod bearings, and the Moly had hardened, REAL hard. Alarmed, I took it to a 'higher authority'. I consulted Harry Pellow, (Hayward) as he had worked closely with my old mentor. Harry had been working intently on Compe***ion lubricants with the Red Line company, and they had addressed this very issue (fresh 'in stock' engines and their shelf life when ***embled) Long story short, a quick change was made to Red Line ***embly lube. (they guarantee it 5 years after pre lubing) I never spun a bearing with the Moly, but must have caught it in time. This was the 'oldest shelf motor' I had, and no complaints from customers with any others. (some sat 1 year, but usually 2 months or so...)