ARP head studs

[usncorpsman]

ok...so i get some head studs from my local shop...and they are too big...they are the ones for the sr20det rn14....a what is an rn14? and b should they be too big? i know arp makes one size smaller than mine for the sr20...so should i get those?

[Nismo_Freak]

RNN14 is a Pulsar GTiR, alot of the parts for that particular motor are proprietary.

You need : 102-4701

[T-rev]

sounds like you got the arp studs for the sr20det GTIR motor, I think thats the fwd, they are slightly bigger, 12mm vs 11mm. I don't know why.

the part number your looking for is ARP102-4701

edit: damn! beat me to it!

[nicku]

is it a must to change head stud when i replace the head gasket?

[Hijacker]

Factory head bolts are torque to yield bolts. When you go through the torquing process, you're stretching them out so the threads engage better and clamp tightly. When you remove head bolts, they stay stretched. I have seen head bolts successfully re-used, but I typically try to recommend against doing that, especially on an aluminum blocked motor like the SR.

ARP studs are a good alternative to getting new factory headbolts and they give better, more even, clamping on the head. ARP suggests that you replace the studs every time you tear the motor down to remove the head. However, I have no real experience with them (yet), so I can't tell you for certain if they're torque to yield or not. First impression is that they're not, but I have been wrong in the past.