i have a 98 gsr with ARP head studs. I know they have 12 point nuts on the bolts, but i didnt have a 12 point socket set so i tryed my 6. it will not hold on the nut it slips off after i try to take it off. used 14mm, it fits right, just cant hold.

so i go buy a 12 point 14mm, and, it does not fit at all. that does not make any sence. 14mm 6 point fits but 12 doesn't. how is that so. there the same size. so i got a 15mm 12 point and that is too big, go figure.

so what i am asking is does anyone know what size ARP head stud nuts are?

could really use the help. i would call ARP but it was to late to call and it being sunday i cant go buy any other tools at the moment.

 

i think they might be 13mm if i remember correctly when i took them off

 

thats what i was thinking i was just out stairing at it messing with the 14 and it look like it might be going over the hole nut. ill get one tomarrow.

 

13mm, 12pt 1/2" drive or 3/8" drive deep-well socket.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IN VTEC &raquo;</TD></TR><TR><TD CLASS="quote">13mm, 12pt 1/2" drive or 3/8" drive deep-well socket.</TD></TR></TABLE>

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I have a 14mm instead. However I just tried it on this Huskey 14mm 6pt and it seems to fit good. I'm gonna see if I can make a trip to sears some time before that 1 nut comes in. lol

 

do it rite. get the rite size you need so you can torqe it rite.