etn550

1. Is it necessary to change lifters when the cam is changed? 62,000 miles on the lifters and OEM cam.

2. Can the lifters be change in frame? How is it done?

Thanks,

ratsun

1) No need to change the lifters.
2) Yes they can be swaped out in frame.

etn550

Thanks!

berettaman

Ratsun,

Why is there no problem using old lifters with the new cam in a cummins? I'm not doubting you because I'm no diesel guru by any means. All I know is that back when we were racing a lot with SBC's we found out the fastest way to ruin a new cam was to run it with old lifters. The cam/lifters were designed to wear in together and when the cam was changed, the contact area was different between the new cam and old lifters causing premature wear. I will admit most of the time we had quite a bit of spring pressure though.

Just curious

thanks
Dave

White Ghost

i did not change my lifters when i swapped out my cam . that is what the guys at hamilton cams told me i could do . they said just make sure that they aren't scored and that the suface is wearing correctly. good luck