Powered by Team Mondor
Results 1 to 6 of 6

Thread: oil grade vs. bearing clearances

  1. #1
    Regular Supramaniac
    adampecush's Avatar
    Join Date
    May 2006
    Location
    Edmonton
    Posts
    2,122

    Default oil grade vs. bearing clearances

    Hoping somebody could lend their $.02 on oil weight.

    My bottom end was built fairly loose, with the clearance of my mains at .0024" and rods at .0021". I've got a 15W50 break-in oil in the car right now (first start-up is going to be tonight), but wondering what I should switch to after the first few oil changes (will switch to straight 40w after draining the 15W50). This car will be seeing the track (time attack-style events) and is set up with dual remote filters, remote thermostat, cooler, and -10 lines. Given the clearances, I'm leaning toward a 5W40 or 5W50 oil. Any suggestions?

  2. #2
    Established 1994
    Nick M's Avatar
    Join Date
    Sep 2005
    Location
    U.S.
    Posts
    8,771

    Default Re: oil grade vs. bearing clearances

    If it is a 40 grade, it won't have a "W", unless you live on Venus. Suggestions? Don't build the engine with .024 clearance.
    Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other.

    www.thereligionofpeace.com <------- stay in the know, religion drives political beliefs

  3. #3
    Grumpy Old Man
    IJ.'s Avatar
    Join Date
    Mar 2005
    Location
    I come from a land down under
    Posts
    39,070

    Default Re: oil grade vs. bearing clearances

    What are your power goals Adam?

  4. #4
    Regular Supramaniac
    adampecush's Avatar
    Join Date
    May 2006
    Location
    Edmonton
    Posts
    2,122

    Default Re: oil grade vs. bearing clearances

    Quote Originally Posted by IJ. View Post
    What are your power goals Adam?
    500-600 whp is what I'm aiming for.

    I would have gone tighter on clearances if this was going to be more of a daily driver, but that's not the case.

  5. #5
    Grumpy Old Man
    IJ.'s Avatar
    Join Date
    Mar 2005
    Location
    I come from a land down under
    Posts
    39,070

    Default Re: oil grade vs. bearing clearances

    Quote Originally Posted by adampecush View Post
    500-600 whp is what I'm aiming for.

    I would have gone tighter on clearances if this was going to be more of a daily driver, but that's not the case.
    I had great results with those clearences and 10/60 Adam.

  6. #6
    Regular Supramaniac
    adampecush's Avatar
    Join Date
    May 2006
    Location
    Edmonton
    Posts
    2,122

    Default Re: oil grade vs. bearing clearances

    Quote Originally Posted by IJ. View Post
    I had great results with those clearences and 10/60 Adam.
    Well that makes it easy then, as that's what my daily runs.

    Thanks IJ.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •