Cam noise
#2666672
06/16/19 09:18 PM
06/16/19 09:18 PM
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Joined: Jan 2003
Posts: 3,831 N.E. Ohio
6bblFLASH
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,831
N.E. Ohio
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Have an odd problem that is probably stiction from the break in oil. Mocking up valve train on a new build and the cam "creaks"like a door hinge. Remove any 8 pushrods ,noise goes away .Only with full load of all 16 pieces. New roller etc.It's not the lifters or the pushrods or rockers
No intake on engine,can clearly see and hear it is the cam. Bar it either direction, "creaks". Remove some push rods,no sound. Cam turns free by hand. Primed the oil system and rotated. Still does it. I come to believe it's the oil,it's break in oil with whatever is in that stuff. If you ever tried to tighten a headbolt more ,that chatter /creak is how it sounds
Anyone ever experienced this?
Last edited by 6bblFLASH; 06/16/19 09:18 PM.
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Cam noise
[Re: 6bblFLASH]
#2666683
06/16/19 10:01 PM
06/16/19 10:01 PM
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Joined: Nov 2005
Posts: 690 New Hampshire, USA
oldiron
mopar
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mopar
Joined: Nov 2005
Posts: 690
New Hampshire, USA
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Kind of had this problem last week, but don't know if its the same noise. What was happening was that the cam was walking forward and the chain was creaking because it was out of alignment. It was almost as if the cam was screwing out. I thought maybe because I replaced the #3 cam bearing (scored from oil feed hold directly toward the edge of the bearing. At any rate I looked from the side and saw a pretty good gap between the cam gear and the thrust surface. Took off the rockers and tapped the cam back and noise went away. Just a thought
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Cam noise
[Re: 6bblFLASH]
#2666687
06/16/19 10:13 PM
06/16/19 10:13 PM
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Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
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master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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I know the noise!I had tight main bearings though and had the block line honed and .001 king bearings done.
Last edited by Clanton; 06/16/19 10:14 PM.
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Re: Cam noise
[Re: oldiron]
#2666715
06/17/19 12:12 AM
06/17/19 12:12 AM
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Joined: Jan 2003
Posts: 3,831 N.E. Ohio
6bblFLASH
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,831
N.E. Ohio
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Kind of had this problem last week, but don't know if its the same noise. What was happening was that the cam was walking forward and the chain was creaking because it was out of alignment. It was almost as if the cam was screwing out. I thought maybe because I replaced the #3 cam bearing (scored from oil feed hold directly toward the edge of the bearing. At any rate I looked from the side and saw a pretty good gap between the cam gear and the thrust surface. Took off the rockers and tapped the cam back and noise went away. Just a thought I was wondering if it could be the nylon cam button. Cam has very little endplay. I thought rollers didn't have anything to make them walk? Cam gear has a torington thrust bearing. Will check alignment, thanks. Just ain't finding a reason so far. 1st roller cam I've ever touched. Maybe the last too....
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Cam noise
[Re: Clanton]
#2666716
06/17/19 12:14 AM
06/17/19 12:14 AM
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Joined: Jan 2003
Posts: 3,831 N.E. Ohio
6bblFLASH
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,831
N.E. Ohio
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How strong are your valve springs? They are K Motion 1100. 500in/rate "HiTorq" cam lobes. 4208 304-7 Comp Cam .609 lift. It's pretty darn hard to bar over. Gonna need a pony motor to start it..!!
Last edited by 6bblFLASH; 06/17/19 02:31 AM.
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Cam noise
[Re: 6bblFLASH]
#2666759
06/17/19 09:14 AM
06/17/19 09:14 AM
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Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
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master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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. If you ever tried to tighten a headbolt more ,that chatter /creak is how it sounds
Anyone ever experienced this? You can go 10# more on tq with ARP head bolts/studs to help seal the head.
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Re: Cam noise
[Re: 6bblFLASH]
#2666817
06/17/19 10:59 AM
06/17/19 10:59 AM
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Joined: Jan 2003
Posts: 17,844 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,844
S.E. Michigan
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Only time I ever had that kind of noise, I convinced myself it was a rocker arm during mockup.
A little bit more oil was used from then on.
Rich H.
Esse Quam Videri
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Re: Cam noise
[Re: DoubleD]
#2666823
06/17/19 11:10 AM
06/17/19 11:10 AM
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Joined: Jan 2003
Posts: 3,831 N.E. Ohio
6bblFLASH
OP
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OP
master
Joined: Jan 2003
Posts: 3,831
N.E. Ohio
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sounds to me like there is a bind somewhere - did you check for interference around the retainers and rockers - how about push rods and the heads ? Dave,no contact anywhere. 1st heard it checking V/Piston clearance. Had all 16 in and heard this sound [censored]? As I removed pieces to take measurements ,sound stopped. Thought,well maybe Iv`e turned it so many times Iv`e dried out the journals. Primed the system. No change. Cam is free,floats freely against the button. Should have expected something not right. 1st set of cam bearings I think Iv`e ever installed that DID`NT require shaving to get the cam in. Drove`m in,,cam fit 1st try.........
Last edited by 6bblFLASH; 06/17/19 11:25 AM.
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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Re: Cam noise
[Re: DoubleD]
#2666897
06/17/19 01:26 PM
06/17/19 01:26 PM
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Joined: Jan 2003
Posts: 3,831 N.E. Ohio
6bblFLASH
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,831
N.E. Ohio
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Hmmmm,never gave the springs any thought. Possible I suppose. Getting the car back out after 5 years has turned into a reality show. You just can't believe the "never had any problems before " list of things. I am not giving up on it tho.....
70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas 9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ! 2013 StickShift Challenge Winner@ Mopar Nationals!
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