Lifter issue - please help

Reply Subscribe

Thread Tools

Search this Thread

Sep 12, 2012 | 02:21 AM

kunkelz28

Thread Starter

Staging Lane

iTrader: (2)

Joined: May 2007

Posts: 82

Likes: 0

From: Minnesota

Lifter issue - please help

I got done with my H/C/I swap (a few hundred miles since the swap) and i am having a lifter tick, (it gets loud not normal valvetrain noise) driver side on the back maybe 5 or 7. what really stumps me is the tick comes and goes it seams to be worse when the motor is warm, what can i do without taking off the head?

any help would be greatly appreciated

mods

1999 Camaro SS - 6 speed
PRC 215 heads
fast 92 mm intake
92 mm throttle body
tsunami cam, 235/240 648/605 111
42 lbs injectors
racetronix fuel pump
new plugs/wires
longtube headers
off road y pipe
borla cat back
double roller ls2 timing chain
new water pump
new alternator
tuned by Hi Tech Motorsports

Sep 12, 2012 | 04:24 AM

therabidweasel

TECH Resident

iTrader: (5)

Joined: Jan 2012

Posts: 876

Likes: 2

From: NH/MA

I don't see hardened pushrods, what lifters you're running, or a trunion or rocker upgrade in your list.

I had a tick like that with my YTs that was way high on the motor. I think it was slight interference with the valve cover, fixed by removing and reinstalling the cover and rockers for head torque.

Sep 12, 2012 | 07:07 AM

garygnu

TECH Senior Member

Joined: Feb 2009

Posts: 5,445

Likes: 4

I would think as the motor heats up and the head and block expands ,the distance between the rocker and the lifters grows resulting in less preload.maybe try a little longer push rod.

Sep 12, 2012 | 12:55 PM

therabidweasel

TECH Resident

iTrader: (5)

Joined: Jan 2012

Posts: 876

Likes: 2

From: NH/MA

Gary is right, you lose about .008 in preload. But if you're using ls7 lifters that is nothing...unless you didn't measure well and were marginal to begin with.

Sep 12, 2012 | 01:43 PM

KevinR

TECH Fanatic

Joined: Jan 2010

Posts: 1,219

Likes: 0

From: Euless Tx

I don't know, man... I had the EXACT same problem when I did my cam swap. It wouldn't make any noise on a cold start, but after a few minutes of warming up, it would start to tick. It ended up being a lifter on #7.

Sep 12, 2012 | 03:03 PM

Slick68

On The Tree

iTrader: (7)

Joined: Sep 2011

Posts: 174

Likes: 0

From: Sevierville, TN

I'm having a similar issue. I've got alot of valvetrain "clatter". Looks like I need to invest in a pushrod length checker. I also used stock lifters and rockers. I really hope I don't have to change lifters. That means another set of bolts and gaskets.

Sep 12, 2012 | 09:27 PM

kunkelz28

Thread Starter

Staging Lane

iTrader: (2)

Joined: May 2007

Posts: 82

Likes: 0

From: Minnesota

sorry, to add to my mods

ls7 lifters (they were soaked for 36 hours)
hardened PR

Its really weird that its only in one or two cylinders and it comes and goes