ARP Head Studs?

[Russco]

Does anyone know if ARP head studs are supossed to be a straight fit for a GTR - had to machine the head to fit these as they were thicker in diameter!? Does this sounds right?

[mark99]

yeah this is right, dont know why but they made them over sized, would like to know the theory behind this, seeing as the part that screws into the block is standard size.....

[Merli]

Yep...

It was 12mm on the block side, and 12.7mm into the head if I remember correctly... Had to re-tap the head to fit them...

[Russco]

Yes, spot on - what torque settings are recommended on these?

[wrxhoon]

Yep...

It was 12mm on the block side, and 12.7mm into the head if I remember correctly... Had to re-tap the head to fit them...

i'm sure you didnt have to re-tap the cil head , i think you'll find out that you had to drill the holes out a little so the bolts fit , as they dont screw in to the head , they screw in the block

[CRSRB25DE]

Where do you get the rb26 head studs from!!!!?

Anybody, please?

[retrotec]

ARP=Rocket industries etc... their pricey f#@kers :flamed:

[Sydneykid]

www.performancewholesale.com.au

[proengines]

yeah this is right, dont know why but they made them over sized, would like to know the theory behind this, seeing as the part that screws into the block is standard size.....

You might find they are 1/2" unf on the top but taken down to 12mm to screw into the block. I'm 99% sure the SR20 studs also use an imperial thread on the top of them. It saves making a different nut especially for them.