marshall93z

None of those you picked are "cap screws".

1racerdude

I sure did.
They don't seem to make a 3/8 cap screw with 8740Material.
http://adobe.kodakgallery.com/Enhanc...ID=47650241214
Application Material
UHL
(in.)
Thread
Dia. (in.)
Wrench
Dia. (in.)
Set
Qty
Complete
Set
2-Piece
Pack
Ford 427 (LeMans) and general replacement for aluminum rods, w/ washer 8740 1.800 7/16 7/16 16 200-6001 200-6021
Venolia, BRC, aluminum rod replacement, with washer 8740 1.800 7/16 7/16 16 200-6002 200-6022
Manley Elgin replacement 8740 1.800 7/16 7/16 16 200-6003 200-6023
General replacement, aluminum rods, with washers, under cut 8740 2.000 7/16 7/16 16 200-6004 200-6024
Manley replacement rods 8740 1.600 7/16 7/16 16 200-6006 200-6026
Manley replacement, rod part number 14051 and 14055 ARP2000 1.850 7/16 7/16 16 200-6201 200-6221
Carrillo replacement for CARR bolt, with washers ARP2000 1.800 7/16 1/2 16 200-6202 200-6222
Carrillo replacement for H-bolt, without washers L19 1.725 7/16 1/2 16 200-6203 200-6223
Lentz replacement with washers ARP2000 1.800 7/16 1/2 16 200-6204 200-6224
Lentz replacement without washers ARP2000 1.725 7/16 1/2 16 200-6205 200-6225
Venolia, Brooks, KB, Aluminum rod replacement with washer ARP2000 2.000 7/16 1/2 16 200-6206 200-6226
General replacement, steel rods ARP2000 1.600 3/8 7/16 8 200-6209 200-6219
General replacement, steel rods ARP2000 1.500 5/16 3/8 8 200-6210 200-6220
Venolia, Brooks, KB, BRC, Aluminum rod replacement with washer L19 2.000 7/16 1/2 16 200-6506 200-6526
Venolia, Brooks, KB, Aluminum rod replacement with washer Custom Age 625+ 2.000 7/16 1/2 16 300-6706 300-6726
Carrillo, Lentz, Ferrea replacement without washer ARP3.5 1.750 7/16 1/2 16 300-6601 300-6621
Carrillo, Lentz, Ferrea replacement without washer Custom Age 625+ 1.750 7/16 1/2 16 300-6701 300-6721
Carrillo replacement ARP3.5 1.600 3/8 7/16 16 300-6602 300-6622
Carrillo replacement Custom Age 625+ 1.600 3/8 7/16 16 300-6702 300-6722
Carrillo replacement ARP3.5 1.600 3/8 7/16 8 300-6603 300-6623
Carrillo replacement Custom Age 625+ 1.600 3/8 7/16 8 300-6703 300-6723
Carrillo replacement ARP3.5 1.500 5/16 3/8 8 300-6608 300-6628
Carrillo replacement Custom Age 625+ 1.500 5/16 3/8 8 300-6708 300-6728
General replacement, steel rods ARP2000 1.500 3/8 7/16 8 200-6207 200-6227
General replacement, steel rods ARP2000 1.750 3/8 7/16 8 200-6208 200-6228
General replacement Custom Age 625+ 1.500 3/8 7/16 8 300-6704 300-6724
------------------------------------------------
8740 CHROME MOLY: Until the development of today’s modern
alloys, chrome moly was popularly considered a high strength material.
Now viewed as only moderate strength, 8740 chrome moly is seen
as a good tough steel, with adequate fatigue properties for most racing
applications, but only if the threads are rolled after heat-treatment,
as is the standard ARP production practice. Typically, chrome moly
is classified as a quench and temper steel, that can be heat-treated to
deliver tensile strengths between 180,000 and 210,000 psi.
AERMET 100: With a typical tensile strength of 280,000 psi,
Aermet 100 is a new martensitic super-alloy that is stronger and
less expensive than the super-alloy austenitic materials that follow.
Because it is capable of achieving incredibly high clamping loads, it is
ideal for short but extreme environments like top fuel, funny car and
some short track applications. Although Aermet 100 is a maraging
steel that is far superior to other high strength steels in its resistance
to stress corrosion, it must be kept well-oiled and not exposed to
moisture.
ARP2000: An exclusive, hybrid-alloy developed to deliver superior
strength and better fatigue properties. While 8740 and ARP2000
share similar characteristics – ARP2000 is capable of achieving a
clamp load at 220,000 psi. ARP2000 is used widely in short track
and drag racing as an up-grade from 8740 chrome moly in both steel
and aluminum rods. Stress corrosion and hydrogen embrittlement are
typically not a problem, providing care is taken during installation.
L19: This is a premium steel that is processed to deliver superior
strength and fatigue properties. L19 is a very high strength material
compared to 8740 and ARP2000 and is capable of delivering a clamp
load at 260,000 psi. It is primarily used in short track and drag racing
applications where inertia loads exceed the clamping capability
of ARP2000. Like most high strength, quench and temper steels
– L19 requires special care during manufacturing to avoid hydrogen
embrittlement. This material is easily contaminated and subject
to stress corrosion. It must be kept well-oiled and not exposed to
moisture.
INCONEL 718: A nickel based material that is in the high temperature,
super-alloy class, it is found to be equally suitable in lower
temperature applications. This material delivers tensile strengths into
the 220,000 psi range and exhibits improved fatigue properties. Best
of all, Inconel 718 is completely immune to hydrogen embrittlement
and corrosion.
ARP3.5 (AMS5844): While similar to Inconel 718, these superalloys
are found in many jet engine and aerospace applications where
heat and stress attack the life of critical components. The high cobalt
content of this alloy, while expensive, delivers a material with superior
fatigue characteristics and typically tensile strength in the 260,000
psi range. The immunity to hydrogen embrittlement and corrosion
of these materials is a significant design consideration. These
materials are primarily used in connecting rods where extremely high
loads, high RPM and endurance are important factors – Formula 1,
Winston Cup and CART applications.
CUSTOM AGE 625 PLUS: This newly formulated super-alloy demonstrates
superior fatigue cycle life, tensile strength and toughness
– with complete resistance to atmospheric corrosion and oxidation.
ARP is the first to develop manufacturing and testing processes for
fasteners with Custom Age 625+. Best of all it is less expensive and
expected to soon replace MP-35 as the material of choice in the high
strength, super-alloy field. Typical tensile strength is 260,000 psi.

Masnart39

If these are 3/8-24 thread 8740 cap screws, torque them to 45 ft lbs w/ ARP moly, or 55 ft lbs w/30 wt. oil.

Eagle's bolts, like many rod manufactures, are made to their specs, and are not available directly from ARP. That's why they aren't listed in the applications in their catalog.

marshall93z

http://store.summitracing.com/partde...0&autoview=sku

1racerdude

Well it seems they do Make them.
ARP catalog don't show them if I didn't overlook them.

marshall93z

Yeah, I emailed Eagle about them, so we'll get the numbers straight from the horse's mouth!

1racerdude

marshall93z

Got tired of waiting for the email reply so I called them.

43ft/lbs with moly lube. And he said "PLEASE don't use anything but moly lube!".

I would have never guessed that low!


EDIT: 43 ft/lbs, not 40.

1racerdude

Seems the 60-70 foot lbs that was posted about was a TAD high.
Always trust the book made by the manufacturer and use it.

marshall93z

Will any kind of moly lube work? Like this stuff from Advanced Auto...even though it says NAPA on it!

Says it for ignition stuff.


http://www.partsamerica.com/ProductD...egoryCode=3244

1racerdude

I would call Eagle back and ask for a known substitute.

marshall93z

He said I could get at a place like NAPA.

1racerdude

Make sure that what ever you get that it has the right % of moly and other lubricants so as to equal what Eagle recommended.

marshall93z

Called him back and he said moly engine assembly lube. And make sure I get ALL the oil out of the rod threads and off the bolt.

1racerdude

There ya have it.
Commence torquing.