Kingrat said:rs regal said:sounds like a good idea, but a lifter is crowned in the center. the hole is in the center where it sees the most load... do you want a hole at that point? crower sells them with the same hole, but it is off center a bit.... sounds like a much beter way to go to me........buy the way, i put 10 nights on a set of howards in a c/t motor. 2 of them show a lot of wear, the cam looks good but lifers are junk. not sure if it was a hardness issue or what.... i got talked into tring them, i wish i knew about the crowers before hand
actually, i thought they took most of the pressure around the outside of the lifter and not in the center, because the lobes are tapered also, also what motor oil were you running?
i helped a friend of mine rebuild a "cam eater" that ate 3 hydraulic cams while running mobil1...hes since switched to the isky 202SO lifters with the oriface and a comp XS cam, forget which particular grind...also switched to rotella T oil and he hasnt had a problem since and hes at double the previous mileage its gotten from hydraulic cams
i would probably run rotella T or delo 400 for a driver, unless you want to get into race oil for the last ounce of performance..just make sure they dont skimp on the ZDDP for a flat tappet engine like most current SM rated oils
Mobil1 in a flat tappet'ed engine....that' a disaster waiting to happen for sure! I'm a sucker for Pennzoil but will start looking more into other oild´s that still have the right lubricants for flat tappets if i use one.
By the way..you make a good point of the tapered lobes not touching the centre or the lifter in the way i was thinking! -After all...they still pull the cam backwards to keep it in the block
Wow. This is not getting easier to choose. Oh well...i think i have enough time to make the right decision.
Thanks guys!