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-   -   Afr head stud problem (https://www.racingjunk.com/forums/showthread.php?t=30541)

rhino058 06-10-2011 07:12 PM

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

zipper06 06-10-2011 10:32 PM

Crowfoot wrench works, however the torque value changes some. i seen it done many times.

JMO

Zip.

fla1976 06-11-2011 02:23 AM

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

rhino058 06-11-2011 05:44 AM

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

TheYellaBrick 06-11-2011 08:09 AM

GREAT website and info !! Thanks from ME ! :D

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TheYellaBrick 06-11-2011 08:10 AM


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 !!

cncmotorsports 06-11-2011 03:15 PM

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

rhino058 06-12-2011 01:57 PM

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

fla1976 06-12-2011 03:19 PM

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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