ARP wheel studs in S14 hubs

[Rittmeister]

I'm about to go 5-lug on my S13. I'm using Attain front hubs, which I've found use S14-size studs. Either when I do the swap or not long in the future I want to upgrade to longer wheel studs. You can get ARP studs for S13/Z32 all day long, but for S14 front everyone seems to point to a set of Moroso studs with off-the-wall thread pattern, which I'd prefer not to use.

I'm wondering if anyone's using ARP studs in the front of their S14, and if so which part number you used.

I've done a bit of research on the sizes; SPL and a few other sources say the S14 knurl size is 14.3mm, which works out to about .5629 inches. We'll round to .563 in.

ARP makes two studs that are close to that, as seen here:

ARP Wheel Studs - summitracing.com (http://store.summitracing.com/egnsearch.asp?N=700+300117+115&Ne=110914&NeXID=110914)

One is .558 inches, one is .565 inches. So, .005 to small or .002 too big?

SPL sells studs they say will fit but of course they don't mention the part number. I have no problem ordering from SPL but I kind of want to know what I'm getting first...

Any input appreciated.

[evilrps13]

get the .565. i have them they work. too small would not work. .002 larger is perfect.

[Rittmeister]

Truly?

I'm looking at the 12x1.5 threaded ones, just so I can have all the same lug nuts. Is the extra length an issue at all - do they stick out and look funny? They're a half-inch longer than the S13 studs... Also - the knurl is a different length. Any issues there, either with the install or with using them in the long term?

[jamlanta]

there is an article with all the info you need on doing this, i have it saved

http://www.zilvia.net/f/tech-talk/121418-s14-front-extended-wheel-studs-using-moroso-extended-wheel-studs-mor-46160-a.html

check it out