Is there enough room so you can double nut? Also sometimes a bent pushrod
can come from having spring guides inside your valve springs that can climb
under your valve spring retainer, especially if the retainers are aluminum.
-- Bill --
-----Original Message-----
From: owner-tigers@Autox.Team.Net [mailto:owner-tigers@Autox.Team.Net] On
Behalf Of R Smith
Sent: Tuesday, May 29, 2007 12:58 PM
To: Ronak, TP (Timothy)
Cc: tigers@autox.team.net
Subject: Re: What the heck????
Tim,
It has to do with my rocker arm bolts continuing to loosen up? It has
happened
twice so far.
After my cam swap ( hydraulic to solid ) I up-dated my rocker arms - 1.6
Jegs
brand, along with having the heads re-built. ( 351w )
After getting everything back together I was basically driving it for the
first time when one of the poly-lock nuts on the pasenger side started to
back
off causing a strange ticking noise & a sudden loss of power... ( this was @
3000rpm )
After nursing it home & spending some time figuring out what happened, I
re-set the valves, again MAKING sure that I was 100% positive that every
last
rocker arm-nut was set nice & tight. ( originally I figured maybe I just
some
how missed tightening that particular nut )
Anyway - after everything was put back together, I took it out for another
test-run. Down the street, through the neighborhood, everything seemed fine.
Oil pressure was good, temp was at 190 deg, and no strange ticking noises so
I
decided to take it down a back-road & open it up a little. I got on it
through
third gear shifting around 5500rpm at each gear. When I hit third I
basically
just let off the gas & listened to the motor as I decelerated. When I got
back
down to around 2000rpm I heard the ticking again - It sounded exactly like
what had happened the first time so I decided again, to just nurse it back
home at low rpm's. I didn't realize the extent of the damage until after I
got
home & opened up the hood. ( lovely )
After a closer inspection I noticed that the poly-lock had completely come
off
the stud & that is what grenaded my valve cover. Upon disassembly I also
discovered that the failure caused the push-rod for that rocker to be bent
slightly as well. ( GOD only knows what else is damaged )
I called Jegs tech department to see if they had recommendations as to why
this keeps happening & basically the tech figured that I'm just not getting
the poly-locks tight enough? Although I'm quite SURE that I HAVE been, I'm
going to give the guy the benefit of doubt & crank down on them a bit more.
He
also recommended giving the nut itself an additional 1/4 turn after setting
the allen head set-screw. I'm concerned though that that's just going to
screw
my lash setting all up...
Thanks for the concern,
Rob
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