Alum rod go-no go gauge

Discussion in 'PSI Superchargers Tech Questions' started by gordon tarbell, Jan 13, 2012.

  1. gordon tarbell

    gordon tarbell Member

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    I saw on an older post mention of a go-nogo gauge for checking condition of Alum rods. I assume this is for checking condition of the threads in the rodbolt holes. I could also see checking on a regular bassis measuring roundness of the big end bore. How often domost people pull the rods and check them, how many times can they be disassembled before the actual act of assembly and disassembly causes a problem. This next set of rods I want to stay on top of, want to catch a prob before it happens. Where can I get these go-nogo gauges? Need to get a real education on Alum rods, been using them for many years and only broke two but sure it was just luck.
     
    #1
    gordon tarbell, Jan 13, 2012
  2. Mike Canter

    Mike Canter Top Dragster
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    I don't think you can undo rods too many times in the lifespan we are talking about. If it is a blown application then it varies from 15 to 25 runs per set of rods and the owner's requirements. I bought my go-no-go from Childs and Alberts years ago. Just as a warning some brand rods will let that gauge screw in more than others so it varies a little from brand to brand. So you need to get one and try out out on a new rod first to see what is a GO. One thing I find important is a rod bolt stretch gauge because the amount of torque required for the correct amount of bolt stretch varies based on how many times it has been tightened and loosened. According to Brian at GRP it is good to map out the required torque values required for .006" stretch over the life of the rod one time then you will know what to torque them at depending on the amount of runs. This only has to be done on one rod and recorded.
     
    #2
    Mike Canter, Jan 13, 2012
  3. gordon tarbell

    gordon tarbell Member

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    Thanks Mike for the reply. Since C&A is no longer, who else should I contact to get the go-nogo gauge?
     
    #3
    gordon tarbell, Jan 13, 2012
  4. Bob69

    Bob69 Member

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    Evening, contact Brandon below on this site, excellent service has the tools you are looking for. Brought the same tools you are asking about.
    Nitrolink
     
    #4
    Bob69, Jan 13, 2012
  5. Creech

    Creech Member

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    I think if you check the straightness of the rod bolts on a set of rods out of a screw blown motor with 15-20 runs on them you will find some bent.
     
    #5
    Creech, Jan 14, 2012
  6. Randy G.

    Randy G. Top Alcohol

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    Great post, Mike. I agree with everything you said except the last sentence.
     
    #6
    Randy G., Jan 14, 2012
  7. gordon tarbell

    gordon tarbell Member

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    I must be blind in one eye and can't see out of the other . Where is this contact info on Brandon for purchasing this stuff? thanks
     
    #7
    gordon tarbell, Jan 14, 2012
  8. 23T Hemmee

    23T Hemmee Member

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    #8
    23T Hemmee, Jan 14, 2012
  9. G. Anderson

    G. Anderson Member

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    Aluminum Rods

    Precision go-no go gauges in just about ANY size, regular or metric

    are available from all precision tool houses.

    MSC, Rutland, Travers TooL, etc.

    Do a Google search for precision tools.

    Your Pal, Gary
     
    #9
    G. Anderson, Jan 14, 2012
  10. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    stretch

    I usually get cussed, but I make my bottom end guys stretch every bolt when time permits. While most of the time it's fairly uniform, sometimes there are a few oddballs.
     
    #10
    Will Hanna, Jan 14, 2012
  11. secondwindracing

    secondwindracing top alcohol

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    any god machinest tool co. will have them. I use go-no on a lot of thing at my shop I do machine work on the side and I find that wholesale tool hah had very good one at a fair price
    1-800-331-4075
    they are around $50.00 to $60.00
    dave
     
    #11
    secondwindracing, Jan 14, 2012

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