i have the 9mm ARP rod bolts for b18c1 engines. i figured it was metric, but i guess it isnt. 11mm was a little lose, and 10 mm didnt fit.

is it 3/8" or something?

 

i know somone has arp rod bolts in here.

 

i used 11mm 12pt socket, worked fine

 

yea 11mm fits but is kinda loose IMO.

AFAIK, ARP uses SAE, i just want to see if anyone else did it with SAE tools, the only thing that im comming up with thats inbetween 10 and 11mm is 13/32" which is eqivalent to like 10.3mm. is this the correct size?

 

no one has done this with sae tiools?

 

Yes, as far as I know, ARP uses standard sizes. I know I used a standard size for my head studs (1/2 inch) and rod bolts. Unfortunately, I don't know what size it was. I forgot.

Can't you just try a size and see if it fits? I assume you have a set of standard sockets?

 

i dont have a set of std. 12pt sockets. i have no use for them. im just gonna buy the individual sockets for this. 1/2" 12pt for the head studs, and whatever the size rod bolt nuts are.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRCRXsi &raquo;</TD></TR><TR><TD CLASS="quote">i dont have a set of std. 12pt sockets. i have no use for them. im just gonna buy the individual sockets for this. 1/2" 12pt for the head studs, and whatever the size rod bolt nuts are.</TD></TR></TABLE>

Yeah, you should actually get a set of standard ones. Never know when you'll need them.

Don't get a 12 point for the head studs. It's a 6 point bolt, and you don't want to risk stripping anything when you're messing with head bolts/studs. Also make sure it's a deep socket too. 6-point 1/2" deep socket for the ARP head studs =

 

why would i use a 6 point 1/2" on a 12pt 1/2" bolt? thats asking to strip.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRCRXsi &raquo;</TD></TR><TR><TD CLASS="quote">why would i use a 6 point 1/2" on a 12pt 1/2" bolt? thats asking to strip.</TD></TR></TABLE>

ARP head stud bolts are 6 pt. At least that's what mine were.

 

what engine were yours for? were yours bolts or studs?

mine are definitely 12pt. i just looked at them in the package to double check.

 

Mine were head studs for a B18B. And the bolts that went on them were 1/2" 6 point. Sorry, didn't specify.

 

yea mine are for a b18c

 

anyway, this is way off topic.

back to the sie of the rod bolt nut. anyone know the correct sae size?

 

The ARP 9mm GSR rod bolts use a 7/16" 12 point socket.The ARP GSR head studs use a 1/2" 12 point socket.
Glenn