 single thrust cam bearing, what is this protrusion? |
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| Mark Henry |
 Dec 5 2021, 08:59 AM
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#21
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that's what I do!  Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada  |
QUOTE(930cabman @ Dec 3 2021, 07:45 PM)  A bit late to the party, I came upon this a few days ago. The tang for this thrush bearing is smaller than the rest of the cam bearings. My gut is telling me to cut a tiny notch in the case, Dremel. And why the single thrust bearing?? Another victim of a bean counter? Type 1 and 4 only ever came with one thrust bearing, for a stock engine it doesn't really need more than one, the 'dual thrust' is a mod that has been done by independent hotrod engine builders since the 60's. The dual thrust is mandatory for any performance build that has heavier than stock valve springs. See my previous post, file the tang off. |
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| Jack Standz |
Dec 5 2021, 12:01 PM
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#22
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Member Group: Members Posts: 272 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None |
Normally, it's less $ to buy two sets of cam bearings & use the thrust bearing from each set to create a "double thrust bearing" for your motor. Or just pay the premium to have the vendor do the same thing for you.
Your choice about what to do with the extra bearing shells (IMG:style_emoticons/default/smile.gif). |
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| 930cabman |
Dec 5 2021, 12:42 PM
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#23
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Advanced Member Group: Members Posts: 3,007 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States 
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I used a tiny (3/8" diameter) Dremel cut off wheel and created a very small notch in the case. All is good.
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| Superhawk996 |
Dec 5 2021, 12:44 PM
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#24
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914 Guru Group: Members Posts: 5,767 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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Nice! Minimizes risk of unwanted rotation.
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| Mark Henry |
Dec 6 2021, 12:25 PM
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#25
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(Superhawk996 @ Dec 5 2021, 01:44 PM) Nice! Minimizes risk of unwanted rotation. Since I've been grinding off the cam bearing DT tangs (30 years) I have not heard or seen of one instance of a spun cam bearing. I use the KS (steel backed) bearings as I don't like the silverline DT sets. I buy two KS sets and one silverline DT set toss the extras and I have an extra trust to make two sets. In the past I've bought 911 intermediate shaft DT's, the hole is wrong, but you just put the 911 bearing half on the dead saddle. |
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