Afr head stud problem

Old 06-10-2011, 08:12 PM
  #1  
rhino058
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Default Afr head stud problem

Im building a 406 sbc with afr heads with comp double valve spring the outside and inner most exhaust head stud bolt fit but its semi impossiable to get a socket on it ive milled down and grinded one to fit but it doesn't have the strength anymore i had to take so much out i know afr sells resized bolts for just those holes but wondering if anyone had an idea so i dont have to wait till mid next week to get the motor togther
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Old 06-10-2011, 11:32 PM
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zipper06
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Crowfoot wrench works, however the torque value changes some. i seen it done many times.

JMO

Zip.
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Old 06-11-2011, 03:23 AM
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fla1976
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Here is a site to calculate the torque difference Zip talked about. There is an explanation and calculator.

http://www.engineersedge.com/manufac...e_wrench_1.htm
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Old 06-11-2011, 06:44 AM
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rhino058
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I tried a set of crowfooted and they don't solve problem the nut had to drop down into a sleeve almost i'm thinking of just running down to a fastenal store and see what if they have a nut with small diameter but same thread
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Old 06-11-2011, 09:09 AM
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TheYellaBrick
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GREAT website and info !! Thanks from ME !

---------
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Old 06-11-2011, 09:10 AM
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TheYellaBrick
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Originally Posted by rhino058
I tried a set of crowfooted and they don't solve problem the nut had to drop down into a sleeve almost i'm thinking of just running down to a fastenal store and see what if they have a nut with small diameter but same thread
For sure get a grade 8 !!
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Old 06-11-2011, 04:15 PM
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cncmotorsports
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Yup, that's always a problem. We use a smaller Arp 12pt nut for the center studs. I'm not sure if fastenal will have anything
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Old 06-12-2011, 02:57 PM
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rhino058
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Has anyone ordered the "Abbrivated" nut that afr sells on there site i just want to make sure someone else has tried them before i was going to cal afr monday am but im on the east coast and they're based out of california just be easy to know if they worked for anyone else
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Old 06-12-2011, 04:19 PM
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fla1976
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I have used the 12 points from ARP. Don't see that there would be any difference. Definitely has a smaller footprint.
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