Walked cam bearing
#1
Walked cam bearing
Not sure if this is new thread worthy, but I'm going for it.
Broke down 2 Bosch 4.6 motors today. a 2004 D2 and a 2001 RR P38(Red block), both motors had around 130K on them.
Not sure if its because I know the RR block is superior, but it looked so much better.
D2 motor had a steam cleaned cylinder and walked bearing. All the tolerances were loose and the motor seamed to slide apart.
P38 motor was tight as can be, a pain to get the pistons out and the cam was in there good.Could the Cam bearing journal on these "superior" red blocks be better than the others? I know the cylinder wall thickness is.
Check out the bearing with a nice hole from the lifter!
Broke down 2 Bosch 4.6 motors today. a 2004 D2 and a 2001 RR P38(Red block), both motors had around 130K on them.
Not sure if its because I know the RR block is superior, but it looked so much better.
D2 motor had a steam cleaned cylinder and walked bearing. All the tolerances were loose and the motor seamed to slide apart.
P38 motor was tight as can be, a pain to get the pistons out and the cam was in there good.Could the Cam bearing journal on these "superior" red blocks be better than the others? I know the cylinder wall thickness is.
Check out the bearing with a nice hole from the lifter!
#2
#3
There is a book "how to power tune a rover v8" that explains how in 97' LR started grading there blocks. Best quality were marked as red blocks and send for 4.6 builds, blue the lowest quality was used for 4.0.
Meaning RR 4.6 blocks are the best.
By 2003/2004 they were only making 4.6 motors so they used whatever blocks they had for the build. That is why so many 03/04s have issues.
Meaning RR 4.6 blocks are the best.
By 2003/2004 they were only making 4.6 motors so they used whatever blocks they had for the build. That is why so many 03/04s have issues.
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