Homemade Pushrod checking tool

Discussion in 'Tips 'n' Tricks Topic' started by TypeLT1, Apr 28, 2002.

  1. TypeLT1

    TypeLT1 Veteran Member

    Messages:
    477
    Likes Received:
    0
    Joined:
    Jul 8, 2001
    Location:
    Cumming, Georgia U.S.A.
    Build your own homemade adjustable checking pushrod. Take a common 5/16-inch OD stock-type pushrod, cut in two, tap each end internally with 1/4-20 thread, and insert a piece of 1/4-20 threaded rod between the two cut ends...
    Car Craft July 1996 Issue

    ------------------
    A roll of duct tape, bailing wire, and a little luck! It should hold together....
     
  2. Morkai

    Morkai Veteran Member

    Messages:
    1,250
    Likes Received:
    0
    Joined:
    May 8, 2001
    Location:
    Tifton, Ga USA
    Oh, I'm gonna have to try that. [​IMG]

    ------------------
    Eric aka(Morkai)
    '79 Z28, Silver, T-Tops, 388-roller...back on the engine stand ;)

    "186,000 miles a second, it's not just a good idea... it's the law."
     
  3. zeebad1

    zeebad1 Veteran Member Lifetime Gold Member

    Messages:
    900
    Likes Received:
    0
    Joined:
    Nov 24, 2001
    Location:
    Northern IL USA
    What do you use to measure the tool with? I thought about doing this, but my digital caliper only goes to 6". I ended up borrowing a Manley tool & checked with a feeler guage.
     
  4. Tunedup

    Tunedup Veteran Member

    Messages:
    1,473
    Likes Received:
    0
    Joined:
    Feb 28, 2002
    Location:
    Cocoa Florida
    You could do it with a 6" dial caliper. Just mesure the lenth of each peice after you cut it in half, then mesure the space between the 2 peices and add the 3 numbers up.

    ------------------
    79 z28 305 h.o., 200r4, C&C T-tops, factory rust option ;)
    Like a rock.... It sits.
     
  5. Nick76

    Nick76 Veteran Member

    Messages:
    1,990
    Likes Received:
    0
    Joined:
    Feb 27, 2002
    Location:
    Ottawa, Canada
    Don't mean to be dense, but what is the purpose of this tool?
     
  6. Morkai

    Morkai Veteran Member

    Messages:
    1,250
    Likes Received:
    0
    Joined:
    May 8, 2001
    Location:
    Tifton, Ga USA
    Cutting one of those (even stock) rods is easier said than done. [​IMG]

    You didn't have to drill them out to tap them to 1/4-20? What is the standard sbc rod length anyways? Once you measure each half, all you should have to do then is measure the gap with a dial caliper and you're set.

    ------------------
    Eric aka(Morkai)
    '79 Z28, Silver, T-Tops, 388-roller...back on the engine stand ;)

    "186,000 miles a second, it's not just a good idea... it's the law."
     
  7. zeebad1

    zeebad1 Veteran Member Lifetime Gold Member

    Messages:
    900
    Likes Received:
    0
    Joined:
    Nov 24, 2001
    Location:
    Northern IL USA
    The purpose of checking pushrod length is to make sure you have the correct valvetrain geometry. One important part of this is to keep the rocker arm tip centered on the valve tip. I had my block decked, and found that I needed .100 shorter than stock pushrods to keep the roller centered on the valve. Stock length is 7.80". I'll probably buy the Manley checker tool ($8.00) before I do the cut pushrod thing.
     
  8. Morkai

    Morkai Veteran Member

    Messages:
    1,250
    Likes Received:
    0
    Joined:
    May 8, 2001
    Location:
    Tifton, Ga USA
    I got one cut at work no problem (I love power hacksaws), but man I couldn't get a tap to start in that hard#%@ metal.

    You may be right about just buying one, but I can tell you one thing half a rod is good for. It's pretty great for knocking in the oil dipstick sleave that goes into the block/pan. [​IMG]

    ------------------
    Eric aka(Morkai)
    '79 Z28, Silver, T-Tops, 388-roller...back on the engine stand ;)

    "186,000 miles a second, it's not just a good idea... it's the law."
     
  9. TypeLT1

    TypeLT1 Veteran Member

    Messages:
    477
    Likes Received:
    0
    Joined:
    Jul 8, 2001
    Location:
    Cumming, Georgia U.S.A.
    May be better to just buy one.... Thought this may work for someone and I am sure it will...
    May try it myself and see how hard it is to do...


    ------------------
    Break away from the pack,dare to be different..
    A roll of duct tape, bailing wire, and a little luck! It will run just fine...
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.