overtightening rockers
Supreme Member
Joined: Jan 2000
Posts: 3,178
Likes: 48
From: Tracy, CA
Car: '87 IROC
Engine: LB9
Transmission: TH700R4
Re: overtightening rockers
If they're slightly over tightened after the point of proper adjustment, the engine would run rough at worst.
If they've been screwed down all the way, the engine won't run because the valves would never close.
If they've been screwed down all the way, the engine won't run because the valves would never close.
Senior Member
iTrader: (5)
Joined: May 2005
Posts: 831
Likes: 1
From: Midwest IL
Car: 1984 Z28
Engine: Alky 360
Transmission: TH400, Freakshow 9.5"
Axle/Gears: 9" 4.71
Re: overtightening rockers
Backfiring, if they are too tight, not to mention if it is on a new flat tappet hydraulic, you WILL destroy the cam and lifters if not taken care of quickly!
On Probation
Joined: Oct 2008
Posts: 6,319
Likes: 19
From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: overtightening rockers
correct adjustment of regular hydraulic lifters allows for anywhere between at least 90 degrees and 360+ degrees past zero lash.
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