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Unread 06-18-2014, 10:48 AM   #1
coolbreeze48
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Join Date: Jun 2014
Location: capecoral, fl
Posts: 5
cam questions

hi, 2003 jeep grand cherokee laredo 4.0i6
my jeep has the infamous lifter tick
so i removed the head to check, pulled all lifters,
and checked them, they all looked good with even wear and no cupping or scoring, so i proceeded to use a dial indicator for my camshaft to check lift.
i checke it while lifters and pushrod was in .
these are my findings .. highest reading was .250 and lowest was .241
now i think i found stock specs wich are
Camshaft Lobe Lift
Exhaust: 6.579 mm - (0.259 in.)
Intake: 6.477 mm - (0.255 in.)
is this cam any good,??

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Unread 06-18-2014, 01:30 PM   #2
BIGBADWOLF
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2004 WJ 
 
Join Date: Aug 2012
Location: Charlotte, North Carolina
Posts: 405
did you remove tension from the rockers? Hydraulic lifters are not solid with engine off and the plunger spring will give a little.
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Unread 06-18-2014, 05:26 PM   #3
coolbreeze48
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Location: capecoral, fl
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yes , pulled head took reading directly off of lifter, even pulled lifters to see if plunger would go down ,it didnt so got good reading
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Unread 06-19-2014, 09:43 AM   #4
BIGBADWOLF
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2004 WJ 
 
Join Date: Aug 2012
Location: Charlotte, North Carolina
Posts: 405
Usually .001 is max for lobe wear. How accurate is your measuring? Are you using a dial indicator?
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Unread 06-20-2014, 06:04 PM   #5
coolbreeze48
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Join Date: Jun 2014
Location: capecoral, fl
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yea, i used a good dial indicator, the worse one was .013 out,
surprisingly the damb thing wasnt missing, just a mild lifter tick is all
hell being that far out the thing should have been missing
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