 Cam Thrust bearing too tight, I've tried 3 sets |
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| Al Meredith |
 Feb 18 2023, 05:58 PM
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#1
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Senior Member  Group: Members Posts: 980 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061  |
The last couple of TY 4s I.ve built all have had a problem with the thrust cam Bearing. The side with the shoulders is always too tight. The cam will not spin freely . The other side , without the shoulders spins free. I 've tried three different brands and they have the same problem . The used ones have the gray finish warn but they spin fine. AL
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| Geezer914 |
Feb 18 2023, 08:09 PM
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#2
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Geezer914 Group: Members Posts: 2,107 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States 
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Single thrust or double thrust? Lay a sheet of 220 wet/dry sand paper on a sheet of glass. Put a few drops of oil on it and sand off a few thousands from the shoulder until you get close to the clearance you need. Polish the end with 400-600 grit.
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Posts in this topic
Al Meredith Cam Thrust bearing too tight Feb 18 2023, 05:58 PM
rick 918-S Never toss out T4 stuff. Never know when the used ... Feb 18 2023, 06:04 PM Jack Standz +1 Yep, just sand it, clean it, then install it. Feb 19 2023, 01:21 AM 930cabman What cam are you running? As you know anything N... Feb 20 2023, 10:09 AM rfinegan ....don't forget the "tap a tap a" t... Feb 20 2023, 11:36 AM
rfinegan not mine, but worth a look
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