Main bearings recomendation
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Main bearings recomendation

  1. #1
    21' Daytona DaytonaTunnel's Avatar
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    Default Main bearings recomendation

    What bearings are you using in an extreme enviroment like boosted engines ? Why ???

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    Clevite Ms829H
    In a performance or endurance application such as marine always use a hard coated such as the "H" series. "P" series bearings are for passenger apps. Bearings ending in AL are aluminum coated and will be eaten alive in a performance app.

  4. #3
    Frst Round Runnerup Hondog's Avatar
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    What about the "V" series bearing? I have been running Vandervells and then Childs and Albert for about 20 years and have found them to be excellent bearings. Most times I took bearings out that looked almost brand new just for cheap insurance. (BTW the Clevite "V" and C&A are the same bearing)

    Bob

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    Blown application I would recommend the Clevite HK bearings. These are coated bearings. They are double the cost of the H's but for the insurance they provide they are well worth it.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

  7. #5
    B.A.M aka "Black Azz Mike 396_Ways_To_Spit's Avatar
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    Speedpro makes a killer performance bearring too........

  8. #6
    Brendella 2" Runner NoS Arneson's Avatar
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    I am running a set of King bearings and have recently heard more and more good things from machinists and other builders.
    - Gary "Mr Scary" Arneson
    1978 Brendella 2" Runner 463 Nitrous BBC

  9. #7
    Distinguished Member David 519's Avatar
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    Quote Originally Posted by cstraub View Post
    Blown application I would recommend the Clevite HK bearings. These are coated bearings. They are double the cost of the H's but for the insurance they provide they are well worth it.
    +1 what Chris said. IMHO, the H's are fine for N/A racing applications, but turbo/blown require the coated bearings.

  10. #8
    Senior Member H20MOFO's Avatar
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    Bump there for ya Rod.
    Another Hot Boat refugee

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    Quote Originally Posted by H20MOFO View Post
    Bump there for ya Rod.
    I thought I saw a thread on here about this subject but I couldn't find it so I thought - maybe I am loosing my marbles... Thanks

  12. #10
    Senior Member H20MOFO's Avatar
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    Lets get that thing runnin!
    Another Hot Boat refugee

  13. #11
    mo balls than $cents$ IMPATIENT 1's Avatar
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    coated clevite h bearings and fagetaboutit i took straub's suggestion to use them on my blown 475 deal last summer, had a black water passage failure, filled the block up with water while i was spinnin 7krpms, and the crank looked perfect when i pulled it out. not sure if it'd survived with regular ole h bearings in it. from then on, i'll never use another kind of bearing, the new motor is rocking a full set, expensive but the peace of mind was worth it.
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  14. #12
    Cantard 71hallett's Avatar
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    mmm.... Vanila shake?

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    Quote Originally Posted by IMPATIENT 1 View Post
    coated clevite h bearings and fagetaboutit i took straub's suggestion to use them on my blown 475 deal last summer, had a black water passage failure, filled the block up with water while i was spinnin 7krpms, and the crank looked perfect when i pulled it out. not sure if it'd survived with regular ole h bearings in it. from then on, i'll never use another kind of bearing, the new motor is rocking a full set, expensive but the peace of mind was worth it.
    I agree, it's a done deal. Oh yea, besides ordering or paying for it.


    Thanks!

  16. #14
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    Default The Crankshaft

    Bearing selection kinda depends on the crank you're using. The factory GM stuff, 7414, 1063, kinda likes to flex under severe conditions. Bob, "Fiat 48" took me to school about crank flex and oil flashing across the the mains. A good solid crank can make most bearings look like heroes. The combination of a straight, solid crank, and some moderately hard bearings will take what most of us are putting out without any issues. Yes, some of the suffexes are used in extreme conditions, without problems, and may or may not be designed for your/our hotboat uses. The proper bearing is not always the stoutest, the proper bearing is the one designed for your use...........Sure, build it like you were rich and drive it like you stole it, works some time, but not always...........I have a feeling Bob is gonna jump in here any minute............MP
    LOUD BOATS SAVE LIVES

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