learned something interesting about hydro lifters,

[R72K5]

wow i did not have any clue at all that hydraulic lifter feet are actually slighlty concave, lol!

i just learned this!

after all these years of working on engines, trucks and so forth, i just now learned this

wild..

i jut got done checking feet of lifters in the RH bank in the engine in the 71 dually with a small stainless steel rule, theya re all slightl concave good shape yay
now to check LH bank of lifters

trying to rule out a wiped lobe issue in the engine, it has a wierd suck suck suck back up exhaust sound when are slowing engine back down from revving up, hmm, im not sure what it is, hmm, no popping or backfiring or anything like that though,.
maybe the timing chain is slacked
the engine is totally completelyt spotless inside, clean as hell, its the one with the 487x heads on it, a 305 engine, lol


i dunno,..

hmm..


thanks

 

[ntsqd]

Am I missing the sarcasm? Thot they started out slightly convex and when worn out became concave.

 

[R72K5]

vex oops yes i meant convex
thinking one and typing other,


freak..

lol

 

[rdn2blazer]

as they say "ya learn something new everyday". the reason for the convex is so they will spin in their bores so theres less wear on that surface. two surfaces rolling together have less wear then two rubbing together.

 

[R72K5]

as they say "ya learn something new everyday". the reason for the convex is so they will spin in their bores so theres less wear on that surface. two surfaces rolling together have less wear then two rubbing together.

yep yep

i realize all that now after seeing the convex deal with them

i always wondered how they magically spun in their bores but never saw it, but i knew they did this, hmm..

now i know

pretty neat.,..

thanks