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#950058 - 03/13/11 04:18 PM Wiped cam?
73challenger_tn Offline
member

Registered: 01/21/07
Posts: 7
Loc: East Tennessee
Hello, I built a new 360 last fall and it has around 500 miles on it. I have had a problem with what I thought was rocker arms backing off. I tighten this one and maybe a hundred miles later it will be loose again. I didn't do anything special when breaking it in since its a hydraulic roller cam. This rocker arm is screwed it alot more than the rest of the rockers. The 89 roller motor was a factory roller so I reused the factory lifters. The motor runs amazing between the ticking. Could the lifter just be compressing? I hope so! Could this have been my problem?Here are the specs.
RHS heads
Indy rockers 1.5
Comp big mother thumper roller
Crane retrofit pushrods

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#950059 - 03/13/11 04:31 PM Re: Wiped cam? [Re: 73challenger_tn]
JohnRR Offline
I Win

Registered: 01/20/03
Posts: 73475
Loc: U.S.S.A.
You need to look in there , if you have a problem it's going to be very hard to diagnose over the computer .

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#950060 - 03/13/11 07:13 PM Re: Wiped cam? [Re: 73challenger_tn]
astjp2 Offline
master

Registered: 01/18/11
Posts: 4103
Loc: Utah and Alaska
You can cut the oil filter and look for metal, they use it on aircraft filters every time the oil is changed. Tim

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#950061 - 03/13/11 08:41 PM Re: Wiped cam? [Re: astjp2]
wannadrag Offline
super stock

Registered: 11/27/09
Posts: 1122
Loc: WI
What oil were you using?Did it have zinc in it?Most off the shelf oil has no zinc and will wipe a cam out in a hurry.

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#950062 - 03/14/11 07:50 AM Re: Wiped cam? [Re: wannadrag]
JohnRR Offline
I Win

Registered: 01/20/03
Posts: 73475
Loc: U.S.S.A.
Quote:

What oil were you using?Did it have zinc in it?Most off the shelf oil has no zinc and will wipe a cam out in a hurry.




He has a ROLLER cam , not an issue .

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#950063 - 03/14/11 02:36 PM Re: Wiped cam? [Re: JohnRR]
73challenger_tn Offline
member

Registered: 01/21/07
Posts: 7
Loc: East Tennessee
Quote:

Quote:

What oil were you using?Did it have zinc in it?Most off the shelf oil has no zinc and will wipe a cam out in a hurry.




He has a ROLLER cam , not an issue .



Well, I bought two new roller lifts and a oil change yesterday. A bad lifter seems to have similar symptoms.

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#950064 - 03/14/11 05:36 PM Re: Wiped cam? [Re: 73challenger_tn]
drew72 Offline
enthusiast

Registered: 08/15/10
Posts: 343
Loc: S.E.Mich
You also could have a valve seat pounding out.

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