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Corkster
Dodge Dakota
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6/02/2003
14:21:29
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 Subject: Broken HO cam on 2000 Dakota 4.7
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Last week had a shop run by a good friend of mine install the HO cam and intake into my 2000 Dakota 4.7. The install went extremely smoothly - just like clockwork. The truck started right up and ran for one day and then just quit. After some diagnostic work we got the error code - it was p0340 - No Camshaft sensor signal. We then replaced the Cam sensor - still no luck. Checked compression and none of the passenger side cylinders had any compression - the drivers side was normal. Decided to look at the passenger side cam so we took the valve cover (Cam cover) off and discovered the the retaining pin on the camshaft that fits into the timing chain sprocket had sheared off. There was nothing keeping the cam rotating causing the timing to be completely off. The mechanic put the old cam back in and low and behold - we had normal compression (did not start the engine - just turned it over a couple of times !!). My questions is has anyone else had such an experience with a 4.7 cam (HO or stock cam). I really intertested if this has happened to anyone else. Also if anyone else has seen this has it led to other problems (bent valves, etc) Thanks.
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kicker01
Dodge Dakota
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6/03/2003
00:57:50
| RE: Broken HO cam on 2000 Dakota 4.7
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that sux man, ive had the HO cams before and now I have the KRC 206 cams. I havent had a problem yet with either sets so far. Sounds like a manufacturing defect to me. Good luck with your next set.
Steve
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Chipster
Dodge Dakota
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6/03/2003
11:48:27
| RE: Broken HO cam on 2000 Dakota 4.7
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Message:
That pin is a locating pin, it is not meant to be
a high strength part. I'm afraid your mechanic
that installed your cams did not follow the
instructions in the manual. The instructions
say to grip the cam with adjustable pliers and
rotate the cam until the cam sprocket dowel is
aligned with the slot in the cam sprochet. That
is a two person work step. What they did is get
the pin lined up and then did not keep the
pressure on the cam with the pliers, while they
tightened the bolt. So they crushed the pin as
they tightened the bolt. I know this cause it has
happened on two installs in So Cal. If you
follow the directions the cams will install with
not problems. When you tighten that bolt, if it
goes in easy it's correct, if it's a bitch to tighten
you have crushed the pin.
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Blkdak
Dodge Dakota
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6/03/2003
21:52:26
| RE: Broken HO cam on 2000 Dakota 4.7
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Some of the First cams had bad metal,My left cam was replaced due to the wrong metal compounds on the cam,Waited for over two months for the replacement.Keep in mind this is a Jeep part and not a MOPAR approved performance part for the Dodge 4.7L.
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4x4Dak
Dodge Dakota
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6/04/2003
03:13:01
| RE: Broken HO cam on 2000 Dakota 4.7
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Message:
Hey kicker01,
Did you notice a big difference in power when you went from the HO cams to the 206's? I've been wondering what happened with those cams. Last I heard was that they were working on that power loss at about 4200 RPMs. I'm guessing that they fixed that problem, since you have them. I'm interested in upgrading if they're working good for you.
01 QC 4x4 4.7L 5spd
HO Cams, homemade intake(Volant on its way), Gibson dumped, OptimizerII(not worth the money), 180 stat, 3" PA, 33" BFG's AT's, R9000's
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Chipster
Dodge Dakota
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6/04/2003
11:48:42
| RE: Broken HO cam on 2000 Dakota 4.7
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Message:
Blkdak..........He's talking about the sprocket
locating pin being crushed, no metal fatigue
here, just a bad installation!!!
4 X 4 Dak, That loss of power after 4200 rpm
is not the cams, not the computer, but the
tuned length of the intake manifold. Cut the
runners shorter, moves the peak RPM up the
chart.
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Corkster
Dodge Dakota
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6/04/2003
19:37:10
| RE: Broken HO cam on 2000 Dakota 4.7
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Message:
Chipster - thanks for the input. I sent you reply to my mechanic. I got a new cam yesterday and he installed it today. I had him recheck the other side to make sure that cam was OK. I should get my truck back tomorrow. I will let you know how it performs and whether I have any more problems with it or not.
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89poboy
Dodge Dakota
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12/03/2012
16:52:45
| RE: Broken HO cam on 2000 Dakota 4.7
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Message:
has anyone had a cam snap in two? the cam on my 2.5L
snapped just behind the first cylinder. it looked like it had
been cut, it was a straight vertical break with no twisted
portion.
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cody alan bar
Dodge Dakota
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8/22/2014
01:44:28
|  RE: Broken HO cam on 2000 Dakota 4.7
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Message:
Hay chipster it was not a poor
installation. do to the fact i just did
one today on a 2003 dodge Dakota. And went
by the books all was going good running
good i was getting ready to take her out
for a spin and all of a Sudan the engine
started running like crap and making
sounds like crazy i pulled the vavle cover
off and and cam gear and seen that the pin
had shear off
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