[T2] valve adjustment so it is 1.5 or 2 turns ??

[John Anderson]

I'll tend to agree that I haven't noted any sound differences with them, if they aren't old and leaking down, they are quiet, and even the old ones quiet out, eventually.  But in the world of many aftermarket parts of many manufacturers, I will say, odd things happen to compression when adjusted a full 2 turns, with SOME lifters.  Since you can run em all the way extended for a short time to pump them up to adjust (an old, old technique, which works but has dubious benefit) I figure I'll err to a little less contact now days, and not risk them holding things open.
 
I don't understand the mechanism by which that happens BTW.  Some brands had a much smaller bleeder/pressure hole in the side, perhaps those are the ones where it happens, but I do know cranking compression can suffer when too far adjusted, even still within what should easily be bounds of the lifter adjustement, and should still be riding on the cushion of oil.  Don't know how, don't know why, I don't even figure it is possible, but it happens.
 
YMMV.
John
 

________________________________
 From: DurocShark <durocshark at gmail.com>
To: Joe St.Croix <spotop at gmail.com> 
Cc: John Anderson <wvukidsdoc at yahoo.com>; type2 List <type2 at type2.com> 
Sent: Sunday, November 24, 2013 11:28 AM
Subject: Re: [T2] valve adjustment so it is 1.5 or 2 turns ??
  


I find this odd. Hydraulics should be dead silent no matter what. If they aren't, either they aren't fully pumped up with oil, or they're fully extended which is very bad. 






On Sun, Nov 24, 2013 at 11:03 AM, Joe St.Croix <spotop at gmail.com> wrote:

when I had a 78 with hyds, I tested the variables and I learned that, 1.5
>turns is louder and runs cooler, 2 turns is way quiet but runs a little
>hotter, being in Massachusetts, I went with the 2 turns. If I were in the
>southwest Id go with the 1.5, my 2 cents
>