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07-26-2023, 08:23 PM | #1 |
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Flat tappet lifter failure
Curious how many have had this problem regardless of reasoning in last 5 years or so.
Last edited by Terry Cain; 07-27-2023 at 06:49 PM. |
07-27-2023, 01:18 AM | #2 |
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Re: Flat tappet lifter failure
My boy has had issues that have cost engines while
running the expensive billet stuff.
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John Irving 741 Stock 741 Super Stock |
07-27-2023, 09:34 AM | #3 |
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Re: Flat tappet lifter failure
Spring pressure and lifter diameter are factors as well. Stock lifters are good at 380 lb. open and .921" diameter. 500-550 lb. open are another story.
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07-27-2023, 08:51 PM | #4 |
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Re: Flat tappet lifter failure
I lost one cam lobe, I noticed it after about 100 runs. I’m not sure when it went away. Most likely caused by lack of oiling at low rpm. From what I’ve been told the tool steel lifter, cast cam combination is only good for maybe 200 runs if you’re lucky. Go fast stuff can be a P.I.T.A.
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George Mirza D/SA 1236 ‘71 Duster 340 Last edited by Gmirza; 07-28-2023 at 07:47 PM. |
07-27-2023, 09:30 PM | #5 | |
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Re: Flat tappet lifter failure
Quote:
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07-28-2023, 04:06 PM | #6 | |
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Re: Flat tappet lifter failure
Quote:
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07-28-2023, 07:46 PM | #7 | |
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Re: Flat tappet lifter failure
Quote:
I’m not sure. I didn’t check them.
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George Mirza D/SA 1236 ‘71 Duster 340 Last edited by Gmirza; 07-28-2023 at 07:51 PM. |
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07-29-2023, 12:25 PM | #8 |
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Re: Flat tappet lifter failure
Terry you have a PM
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10-05-2023, 08:11 AM | #9 |
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Re: Flat tappet lifter failure
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10-05-2023, 09:09 AM | #10 | |
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Re: Flat tappet lifter failure
Quote:
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