Results 1 to 3 of 3

Thread: no flow

  1. #1
    Member CRAFTSMAN
    Join Date
    Jan 2004
    Location
    grove city,oh.
    Posts
    58

    no flow

    Have had my sbc assembled and on a stand for about a year now. couple day ago put a drill on pump drive tool and spun ,got 40 lbs on gauge. Ran drill/pump for about five mins. and had vary low flow out of four rocker arms? rotated engine several times while pump was running and no change!Used assembly lube when I put motor together and have no restrictors in motor.And of course I`m pretty dam sure cam bearings are in right?

  2. #2
    Member JUNIOR BUILDER jayvee34's Avatar
    Join Date
    Dec 1969
    Location
    St. Augustine, Fl.
    Posts
    92
    Seeing as how the engine has been sitting for about a year, the bypass plunger
    and spring in the oil pump could be stuck in a position as to not allow full
    pressure. Another thought is to much clearance on the crank mains and rod insert
    bearings. I would pull the pan, check the spring tension, and plunger on the pump bypass, also check you clearances while the pan is off. Hope this helps.

  3. #3
    Senior Member RACING JUNKIE curtisreed's Avatar
    Join Date
    Feb 2004
    Location
    KIEFER, OK.
    Posts
    1,309
    One thing I have seen that will cause this is lifter bore clearance. On my race engine I have a little more lifter bore clearance than I like and I have heck trying to get oil to the rocker arms with a primer. Zero problems once the engine is running. This can be easily verified with the intake off, but little tougher with it on. I can't say with absolute certainty that this is your problem, just something else to look at. I was surprised at how much oil the lifter bores will dump when you are spinning it with a primer.

    Curtis


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Email us - Support@RacingJunk.com
Call us - 866.326.9227
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy