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#1 |
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Join Date: May 2011
Location: Auburndale,Florida
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Are there any real advantages to using a roller vs. a Babbitt bearing? I’ve never had any personal experience using them.
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#3 |
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Join Date: Feb 2010
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Really interesting question. A person's intuitive reaction would be "of course, look at things like roller lifters and rockers", but I'll bet there aren't many engine builders who have actually done an A-B-A comparison of cam bearings.
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#4 |
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Join Date: Feb 2003
Location: Glendale, Arizona
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Babbitt is the only way to go.
Roller bearings, when turning the camshaft on the engine stand, the camshaft feels drag free and it turns easily. However, during engine operation and load, there is more drag while turning. When using high spring pressures, the loading may cause the needle bearings to fail. |
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#5 |
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Join Date: Mar 2016
Location: Crete, IL
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The biggest advantage of roller bearings are that they do not need pressurized oiling. So in most V8's you are blocking off 5 oil leaks inside an engine.
__________________
Todd Gross 3323 FS/E,F |
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#6 |
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Join Date: Feb 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
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#7 |
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Join Date: May 2011
Location: Auburndale,Florida
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#8 |
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Join Date: Jan 2012
Location: In between cecil & the grove
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My engine guy told me that Jesel experimented with roller cam bearings and the negative harmonics were real bad. That was quite a few years ago, maybe someone found a way to correct?
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#9 | |
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Join Date: Feb 2003
Location: Glendale, Arizona
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If you have the right cam journal an lifter bore clearance, you will not have to worry. Yes, they are known to create harmonics issues and it shows in Spintron testing. Last edited by SSDiv6; 05-16-2020 at 05:08 PM. |
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#10 |
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Join Date: Aug 2004
Posts: 712
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Not Legal in Stock ,,, correct ?
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