: Can 97 N* lifters be disassembled?



Taspeed
04-23-09, 09:35 PM
just checking. I have a collapsed lifter. Long story short. Had a blown head gasket, pulled apart the heads to clean them up and have them checked. Found an exhaust lifter that has no spring to it. All the cams look good, just looks like the moisture got to a lifter.

Submariner409
04-23-09, 09:58 PM
This is "iffy". The cam lobe and its respective lifter/cam follower mate to each other and should, theoretically, run happily forever. BUT, if something goes wrong with the lifter (in your case) then you have to repair.

Drop a new lifter ( or as many as necessary) in place and slather it and the cam lobe with something like Edelbrock or Comp Cams break-in lube. Install the engine with 7.5 quarts of Pennzoil 10W-30 Long Life (or equivalent) truck oil and start up. Immediately bring the engine up to 1500 RPM and leave it there for 15 minutes - or quickly get on the road and drive under similar speed conditions. This will assure adequate cam oiling as well as break in the new lifter.

No need to remove the "break-in" oil until 4,000 - 7,000 miles.