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Old 06-12-2012, 09:04 PM   #1
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pelikaan's Avatar
 
Country: netherlands
Location: Epse, the netherlands
Interests: boats..
Boat name: facta non verba
Boat make: freedom 230xl 8.2 merc
Engines: mercruiser 502
Cruising area: everywere

Join Date: Jun 2010
Location: Epse, the netherlands
Posts: 17
can you guys help me..

is this a good camshaft for mij merc 502. standard motor forced pistons?
http://www.compcams.com/Company/CC/c...?csid=404&sb=2

does this increase the power and does anyone know what to expect?
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Old 06-12-2012, 10:01 PM   #2
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Country: Guernsey
Occupation: Engineer
Interests: Restoration
Cruising area: Channel Islands & northern French coast

Join Date: Jan 2009
Posts: 154
Only if you have an early Gen 4 502 with split rear main seal and flat tappets. However if you have a later unit (Which are far more common) you'll need a Hydraulic roller tappet camshaft. Have a look here

http://www.cpperformance.com/c-362-comp-cams.aspx

Keep smilin

Chris
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Old 07-12-2012, 02:48 PM   #3
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Country: netherlands
Location: Epse, the netherlands
Interests: boats..
Boat name: facta non verba
Boat make: freedom 230xl 8.2 merc
Engines: mercruiser 502
Cruising area: everywere

Join Date: Jun 2010
Location: Epse, the netherlands
Posts: 17
almost for sure a merc 502gen v has got a hydraulic flattappet camshaft.

HYDRAULIC FLAT TAPPET CAMSHAFT
ENGINE MODEL 7.4L

502 MAGNUM
8.2L
Lobe Lift ± 002 (0 051)
Exhaust .300 (7.62)

Intake.300 (7.62)
Duration at .050 In. ( 1.27mm)
C f
Exhaust 224°
Intake 224°
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Old 07-12-2012, 07:52 PM   #4
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Country: Guernsey
Occupation: Engineer
Interests: Restoration
Cruising area: Channel Islands & northern French coast

Join Date: Jan 2009
Posts: 154
Then yes that cam will work on your motor.
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