Lifter replacement do I Use break-in oil?
#2728340
12/30/19 04:09 PM
12/30/19 04:09 PM
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Joined: Jan 2004
Posts: 367 Newark DE
Dogpro
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OP
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Posts: 367
Newark DE
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70 Challenger stock 318 I am changing the lifters due to some noisy ones. The question is do I need to use a break-in oil to prevent damage to the cam or once a cam is broke in is it good to go? I don't want to ruin something for the price of an oil change. Thanks, Lou
Lou P. Newark DE
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Re: Lifter replacement do I Use break-in oil?
[Re: Mopar Guy]
#2728349
12/30/19 04:56 PM
12/30/19 04:56 PM
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Joined: Jan 2003
Posts: 4,270 Morrow, OH
markz528
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Yes i would use break in oil and run engine on startup like if it whas a new cam so dont let it idel ! Fully agree................
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Lifter replacement do I Use break-in oil?
[Re: markz528]
#2728574
12/31/19 03:15 PM
12/31/19 03:15 PM
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Joined: Sep 2003
Posts: 19,406 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
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north of coder
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i bought a 73 plymouth 4dr one time with a 318 that had a bad misfire. turned out to be two push rods went through the rockers, allowing the lifters to jump around and come apart. it was run quite a while by the previous owner, and by the time i got it, the lifter parts were MIA. i just got a couple lifters off the shelf, plus a couple of rockers, and stuffed everything together. ran it for several years after that with no problems. but in the OP's case, use new lifters with a dab of cam paste on the bottoms, break in oil, and treat it like a cam change. as said, NO idle time.
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Re: Lifter replacement do I Use break-in oil?
[Re: Twostick]
#2729002
01/01/20 02:53 PM
01/01/20 02:53 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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You could just disassemble and clean the lifters and see if they quiet down. that's what I'd do. In the same hole(s) of course. No (related) changes preceding this? I would check preload. they got noisy all of a sudden for a reason.
live every 24 hour block of time like it's your last day on earth
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Re: Lifter replacement do I Use break-in oil?
[Re: RapidRobert]
#2729108
01/01/20 07:03 PM
01/01/20 07:03 PM
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Posts: 367 Newark DE
Dogpro
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Newark DE
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Thanks for all the replies guys. I actually forgot about using cam lube. I'm not sure why they started to get noisy but they have been in the engine 20 years but only about 10,000 miles on them I figured maybe sitting in one spot over the winters may have taken a toll on them . I figure if i'm going through the trouble of taking it apart I might as well change them.
Lou P. Newark DE
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Re: Lifter replacement do I Use break-in oil?
[Re: 6bblRoadrunner]
#2729341
01/02/20 02:00 PM
01/02/20 02:00 PM
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Joined: May 2003
Posts: 6,562 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
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Downtown Roebuck Ont
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Have you checked oil pressure? Maybe your pump is going south and causing the lifter noise. Just a thought. If it's the original 318 and never been apart or hasn't had a timing chain in decades, the pump pickup could be plugged up with assorted nylon timing gear teeth too. Kevin
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Re: Lifter replacement do I Use break-in oil?
[Re: Twostick]
#2729607
01/03/20 10:42 AM
01/03/20 10:42 AM
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Dogpro
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The engine was rebuilt in the mid 90's with new pump and timing chain. I only have the rallye dash oil gauge but it still shows good pressure. The lifters do quiet down after a few minutes but it tells me some of them are leaking down. I currently have the motor out of the car because my power steering box was leaking which I sent out for rebuild so I figured I would pull the the motor for easier access and while it was out detail it and perform some maintenance.
Lou P. Newark DE
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Re: Lifter replacement do I Use break-in oil?
[Re: Twostick]
#2729819
01/03/20 09:16 PM
01/03/20 09:16 PM
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Joined: Jan 2004
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Dogpro
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For the last 4 or 5 oil changes I have used Mobil one 10w30
Lou P. Newark DE
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Re: Lifter replacement do I Use break-in oil?
[Re: DrCharles]
#2730416
01/05/20 10:38 PM
01/05/20 10:38 PM
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Joined: May 2014
Posts: 179 California, U.S.A.
Torquemonster440
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Mobil 1 15w-50 sounds like a diesel blend that may have enough ZDDP, but the 10w-30 is a modern synthetic oil that is engineered for modern roller cams, ... not flat tappets. Hopefully it's just an issue with lifter bleed down, but for future reference when choosing a flat tappet cam oil, make the Zinc/ZDDP level your first priority.
1966 Satellie.. 12.55 @107.75. 906 heads. 3780 lbs.
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Re: Lifter replacement do I Use break-in oil?
[Re: Torquemonster440]
#2730419
01/05/20 10:44 PM
01/05/20 10:44 PM
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Posts: 4,220 West Plains, MO
DrCharles
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I thought he was running a flat tappet cam. From the Mobil chart I linked (15W-50): "Boosted, higher viscosity, advanced full synthetic formula designed for performance vehicles. For high HT/HS applications. Racing and flat tappet applications."
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Re: Lifter replacement do I Use break-in oil?
[Re: Dogpro]
#2730651
01/06/20 09:44 PM
01/06/20 09:44 PM
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Joined: May 2014
Posts: 179 California, U.S.A.
Torquemonster440
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Ok, cool.. that ZDDP content is the key to making these flat tappets live a long healthy life, aside from proper break in if course. And yes, to your original question, definitely use a "break-in" oil with a new set of lifters. No idling, bring it up to at least 2k and vary the rpm between 2k and 2,500 rpm over a 20 min heat cycle. This method has worked for me several times over the years. Joe Gibbs break in oil is great stuff.
1966 Satellie.. 12.55 @107.75. 906 heads. 3780 lbs.
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