Is ARP lube necessary?
We recommend using ARP Ultra-Torque lube to ensure an even, accurate clamp load and to prevent thread galling. This is particularly important for stainless steel fasteners. The lube should be used under the head of the bolt or the bearing surface of the nut and on the threads, unless a thread sealer is used.
How many times can you reuse ARP head bolts?
Generally bolts/studs that have a specific torque value to tighten to are reuseable, but bolts that you torque then turn an extra 1/4 turn or a number of degrees are torque to yield bolts and shouldn’t be reused more than once.
Why are ARP bolts so expensive?
ARP stuff is typically more expensive than other brands, but again, that’s because they use more expensive materials, and the manufacturing process, from heat treating to machining, is more involved.
Can grease be used as assembly lube?
Super Lube® Engine Assembly Grease is waterproof and is an excellent lubricant for anti-seize and engine assembly applications.
Can you reuse Arp 425 head studs?
Yes, you can reuse them. No need to send them in.
Can ARP flywheel bolts be reused?
The stock bolts stretch during installation so they’re not reusable – this set of bolts is not only reusable but actually costs about half as much as a new set of Toyota bolts.
How do you lubricate a cylinder head bolt?
As a rule, the threads and underside of the head on most standard automotive head bolts should be lubricated with motor oil before the bolts are installed. The torque values specified by the engine manufacturer are typically based on oiled threads and fasteners – not dry fasteners.
Are ARP bolts stronger than Grade 8?
ARP “Stainless 300” is specially alloyed for durability, and the tensile strength is typically rated at 170,000 to 190,000 psi. To put all of this into context, your typical grade 5 bolt has a tensile strength of around 120,000 psi, and a grade 8 is in the 150,000 psi range.
Why are head studs better than bolts?
Studs provide the ability to obtain much more accurate torque values because the studs don’t twist during tightening as do bolts. Because the studs remain stationary during nut tightening, the studs stretch in one axis alone, providing much more even and accurate clamping forces.
Do I use assembly lube on piston rings?
You can use assembly lube on the piston pin, but the skirt and lands should only have a light wipe with motor oil. Do not oil the rings unless specifically told to do so by the manufacturer. The oil that is already on the bore surface is all that they need.
