Ahem,
Sleeve/Journal bearings are self-feeding, provided there is an oil slick to feed from.
Ungrooved bearing halves are always the loaded side, and get fed from the oil slick presented by the Upper, unloaded side.
INFORMED Folks go to grooved lower halves to promote cooling. First issue is the Grooved Lower ought to be of a lesser groove than the Upper groove. Second issue is too mucha groove leads to less load area.
So, be kind to your crank, and use the groove wisely. Understand what the groove is for, and what it is not for, then the groove will work for you, and treat you right for many years to come.
H.I. Stud
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95 Towncar that needs more TQ.
Sold 2023: 12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct
Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct
Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct
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