Register now to get rid of these ads!

Technical Breaking in new lifters?

Discussion in 'The Hokey Ass Message Board' started by Sporty45, Nov 29, 2016.

  1. Sporty45
    Joined: Jun 1, 2015
    Posts: 691

    Sporty45
    Member
    from NH Boonies

    If you are replacing lifters, but not the cam, do you still need to go through a cam break in routine? This an OT stock mid 70's Olds 350 hydraulic lifter engine, if that helps.

    Thanks in advance
     
  2. 73RR
    Joined: Jan 29, 2007
    Posts: 6,230

    73RR
    Member

    Yes. However, if the lifters need replacing then what makes you think that the cam is good?

    .
     
    bobg1951chevy likes this.
  3. Jalopy Joker
    Joined: Sep 3, 2006
    Posts: 23,437

    Jalopy Joker
    Member

    x2
     
  4. Sporty45
    Joined: Jun 1, 2015
    Posts: 691

    Sporty45
    Member
    from NH Boonies

    No obvious problem with the cam. The only reason I'm just replacing the lifters is because some of them seemed to be collapsed. This motor has been sitting for close to 20 years. It is a freebie that I'm using til I can afford to build what I want. Just trying to freshen it up a bit.
     
    Register now to get rid of these ads!

  5. EZ Cool
    Joined: Nov 17, 2011
    Posts: 260

    EZ Cool
    Alliance Vendor

    I bought a rebuilt nailhead long block a while back that had been sitting for many years and it had the same problem. I removed the lifters that wouldn't pump up, took them apart and found that the discs underneath the plungers that act as a one way valve was stuck to the bottom of the plungers. Cleaned them all up and motor has run for years with no lifter problems.
     
  6. Are the lifters collapsed or are there cam lobs gone or crap lifters with the base gone, that will stuff the cam!! JW
     
  7. DDDenny
    Joined: Feb 6, 2015
    Posts: 12,357

    DDDenny
    Member
    from oregon

    Wasted days and wasted nights.
     
  8. bchctybob
    Joined: Sep 18, 2011
    Posts: 1,675

    bchctybob
    ALLIANCE MEMBER

    The above would be my first thought however, ..... I have successfully put a few new lifters on the old cam after isolating the noisy ones and eyeballing the action to be sure the cam wasn't totally flat. I used a liberal application of Isky's Rev-Lube but no 20-30 minute break-in.
    I don't know the Olds 350 very well but if you have to tear it down like a Chevy to get the lifters out aren't you most of the way into a cam change also?
     
  9. Sporty45
    Joined: Jun 1, 2015
    Posts: 691

    Sporty45
    Member
    from NH Boonies

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.