Anyone find any ARP headstuds for the RB25 yet?

[93semax]

I can't find any headstuds let alone ARP studs. Anyone else have any luck?

[JonPowell]

All I could find were replacement head BOLTS, but no studs...Sorry.

[wcbjr]

Interesting. I called ARP and they are going to make me some head studs. I don't know how much they will cost because I have been too lazy to get the measurements to them.

[Bryson]

once you do, try to give us your order # or something and a price so we can call em up and just tell them hey, we need same studs as #XXXXX order number.. then blaiam there u have it... ARP head studs for RB25

[93semax]

All I could find were replacement head BOLTS, but no studs...Sorry.

Where did you find the bolts? I need anything right now :/

[JonPowell]

Tomei makes them, I am not sure who state side stocks them.

http://www.tomei-p.co.jp/_2003....html

[93semax]

Tomei makes them, I am not sure who state side stocks them.

http://www.tomei-p.co.jp/_2003....html

I don't see head bolts only rb26 head studs :help

[JonPowell]

Those must be new then because 2 weeks ago they only had bolts. I just went into the favorites and copied the link. I never looked at the page again. I think Jun make bolts also...

http://junauto.co.jp/products/...-bolt

Your job is to find someone in the states that stocks them.

Good luck!

[wcbjr]

I sent an RB20 bolt off to Paeco last Friday to make a set of studs, I'll let you know how it goes.

I also sent them my old headgasket to get a copper 1.5mm one made.

[wcbjr]

Got an email saying that Paeco was in the process of making the head gasket and studs and I should have them in 7 to 10 days. Oh, and the price was $175 plus whatever for the nuts and washers.

[93semax]

Are these Paeco made studs? or did they send them to ARP?Thanks.

[[GoaTSLonG]]

whats the difference between a bolt and a stud?

[wcbjr]

I have no idea, 93semax. All I know is that their catalog said it was made from grade 8 steel. They could be farmed out to ARP, be nice if they were.

[Bryson]

A bolt has only one side of threading, they other side is shpaed to fit a socket. A stud usually threaded on both both ends and has no end designed to fir a socket. I think.

[wcbjr]

whats the difference between a bolt and a stud?

A bolt essentially has the nut and washer integrated onto the top of shank. A stud has a separate nut that gets threaded onto the top.

Taken from ARP's site...

Quote »

HEAD STUDS vs. BOLTS... A TECHNICAL DISCUSSION

ARP®’s factory Tech Representatives are often asked which is better, cylinder head studs or bolts. The answer, invariably, depends on the installation. On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.

For most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.

Studs also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode—never crank it in tightly using a jammed nut.

If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run. [/quote]

Here's a pic of a stud...

[wcbjr]

Doh, too slow I am.

[93semax]

I took measurements today and ordered the head studs from ARP. Total with rod bolts came out to $233+shipping.Should be here next week. I hope my measurements are right :o

[Bryson]

hah I just looked back at my post.. I must have posted it at like 4 AM or something that is HORRIBLE grammar haha