what the hell happened to my main bearings?
#1
what the hell happened to my main bearings?
I was at the track over the weekend and after the last couple of runs and on the ride home i noticed my oil pressure was lower than normal and when I cracked the throttle the pressure dropped. I changed the oil and cut the filter up and sure enough there were tons of copper shavings. I pulled the motor down and found that my thrust bearing and the one in front of it were fu--ing fried. the cap side of the bearing was actually cracked!! and they all looked like they were heated. the rod bearings looked decent and the motor dident make any noise. I was playing around with crankcase ventalation at the track. and my oil was 5/30 with around 3000 on it. did I boost the crankcase and lift all the oil? maybe I twisted the mains? Im running arp studs and the berrings were clevite 77s. the shops I talked to were puzzled that I had this problem at my horsepower level.