Jump to content

Valve lash


Recommended Posts

Just a quick question guys, can the valves be too tight, or tighten up over time?.I went to chck my lash and went through in order, didnt find any loose, but all were on the tight side, the feeler gauge barely fit. I expected to find loose ones after 170k.Thanks for any input.

Link to comment
Share on other sites

I've never heard of valves tightening up over time. If I remember right the valve lash spec are .010-.020 intake and .015-.025 exaust. As long as yours are somewhere in that range you're fine. Sent from my XT907 using Tapatalk 2

Link to comment
Share on other sites

absolutely they'll tighten up... when the seat starts going away, valve will rise in the head and close the gap.Most of the time the wear on the ball ends, rocker arms and shafts, cam and followers will be more than seat erosion.. thus actually 'loosening'. (normally)When you find a 'tight' one, the valve or seat is going away. (abnormal)Usually found when a person does a poor job regrinding the seats/valves. Not so much on virgin heads.

Link to comment
Share on other sites

Well that's not very comforting

No intention of freaking you out! Worry more about the 'one' that is WAY different than the rest! You said they are pretty much 'even', and like the others said: might just chalk it up to someone elses valve set, or the way they were holding their jaw at the time! One mans 'snug' can be another's 'perfect'.. Now, If you happen to find one that won't hold its clearance... then you want to freakout! :cry: do you know the history on this truck? virgin motor? You the only one who's been inside her? :whistle: (geez that looks bad) Just don't forget about em!
  • Like 1
Link to comment
Share on other sites

  • Administrator

Guys are right. As long as they all are just a bit tight I would would chalk it up to a overzealous adjustment. Range of allowance.Exhaust - 0.015 to 0.030Intake - 0.006 to 0.015As long as its between these number you good still. Like I using 0.008 and 0.018 for intake and exhaust.

  • Like 1
Link to comment
Share on other sites

×
×
  • Create New...