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FAQs

30. What the rod bolt materia?

The rod bolt material is L19

25.What is the difference between ARP 625 and ARP 2000 bolts?

The tried, true, and very popular ARP 2000 material is a quench and tempered heavily alloyed martensitic steel with a typical 44-47 C- scale Rockwell hardness and rated at 220,000 psi tensile strength.

The ARP Custom age 625 + counterparts are comprised of a higher tensile strength super-alloy corrosion resistant material, also quench and temper heat treated, to a robust 260,000psi. 

3. What is the bolt torque required on rods?

Hongtai Performance Replacement ARP2000 5/16-1.500" Bolts Torque  45N*m     
Hongtai Performance ARP2000 3/8 -1.600" Bolts Torque  75N*m
Hongtai Performance ARP2000 7/16-1.600" Bolts Torque  95N*m

2. What is the difference between Hongtai Performance Replacement ARP2000 bolt and Original ARP bolt?

ARP8740 bolt                180,000PSI(YIELD STRENGTH)          200,000PSI(TENSILE STRENGTH)
Hurricane Replacement ARP2000 3/8 bolt                          211,829PSI(TENSILE STRENGTH)
ARP 2000 bolt                200,000PSI(YIELD STRENGTH)         220,000PSI(TENSILE STRENGTH)
ARP L19 bolt                 220-230,000PSI(YIELD STRENGTH)       260,000PSI(TENSILE STRENGTH)
CUSTOM AGE 625+ bolt  235-255,000PSI(YIELD STRENGTH)      260,000 PSI(TENSILE STRENGTH)
ARP AERMET bolt         260-280,000PSI(YIELD STRENGTH)       290-310,000PSI(TENSILE STRENGTH)

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