what do you guys have against eagles? they're forged, H beam rods tht have been proven in numerous domestic applications they wont break before a stock rod will and the ARP bolts are better than anything toyota would ever put out
aluminum rods
- Thread starter Tun_x
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(sorry off topic)89supturbo said:
Those domestic applictions use a larger 7/16 rod bolt. The 7m eagle rods use a 3/8 rod bolt. I know it's better material but They look smaller than the factory units. I personally would still think the eagles would be stronger than the factory rods (probably not a whole lot), I'd be afraid to spin them much past the factory red line.
I bought eagle rods, but only because my stock rods were pooched. I'm not going for huge hp either.
i'm currently about to install the eagle rods.
i'm sure they will hold up.
I hate how people knock the product when they have no first hand experience with them.
I haven't heard anyone break an eagle rod on a 7m yet, so i'm gonna be confident that it will hold a decent amount of power.
i'm sure they will hold up.
I hate how people knock the product when they have no first hand experience with them.
I haven't heard anyone break an eagle rod on a 7m yet, so i'm gonna be confident that it will hold a decent amount of power.
Ok... I just wanted to point out that rods are not rotating mass like a crankshaft, flywheel, etc. They are reciprocating mass, like pistons and valves. In other words, at constant rpm they are still absorbing energy because they are rapidly changing direction, whereas the crank and flywheel are spinning with a constant velocity and not absorbing energy (besides friction, which is a seperate thing)
Any reduction in reciprocating mass increases efficiency. That's part of why smaller engines are more efficient, the other parts being reduced friction and better thermal efficiency.
Any reduction in reciprocating mass increases efficiency. That's part of why smaller engines are more efficient, the other parts being reduced friction and better thermal efficiency.
just to clear things up....obviously eagles are better then stock rods...however i would NEVER trust my engine past around 600hp on them.... same as i wouldnt with stock rods... if im building an engine to spin fast and hold 600hp+ im going with the BEST.
stock<eagle<crower/pauter
that simple
stock<eagle<crower/pauter
that simple
i'm just curious how some people are suggesting that eagles aren't good shy of 600hp?
is there something i'm missing? Did someone break one?
Until i see one break at 600+rwhp, i'm not gonna knock the product.
is there something i'm missing? Did someone break one?
Until i see one break at 600+rwhp, i'm not gonna knock the product.
spoolint78 said:
the rods....no... did you change the bolts they came with? or ask for a different kind?
no those bolts were another 400 bucks and change from what i've gathered.
But even with the standard bolts that come with the eagle rods, i haven't heard of anyone snapping one in a mk3 supra, so until i do i'm not gonna knock it.
But even with the standard bolts that come with the eagle rods, i haven't heard of anyone snapping one in a mk3 supra, so until i do i'm not gonna knock it.
oscolivar1 said:
heres a post from someone on another forum:
Originally Posted by 65vette396
O.k. I did some reasearch directly from ARP's website:
MATERIALS USED IN THE MANUFACTURE OF CAP SCREW TYPE CONNECTING ROD BOLTS
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—ARP®2000 is capable of achieving clamp loads
in the 215,000-220,000 psi range. ARP®2000 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 ARP®2000 and is capable of delivering clamp
loads in the 230,000-260,000 psi range. It is primarily used in short track
and drag racing applications where inertia loads exceed the clamping
capability of ARP®2000. 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.
MATERIALS USED IN THE MANUFACTURE OF CAP SCREW TYPE CONNECTING ROD BOLTS
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 super-alloys
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 270,000 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.
BTW, ARP will custom make rod bolts for you in any material they have available, however you will pay for it. Drew
flubby posted this info a bit ago:
well, after hearing horror stories of failed eagle rods, and then about people fitting "bigger" bolts to the Eagles... i started asking around and doing a little bit of research. Im sure you all are going to rip me a new butt hole because your friend's grandmother's cousin's aunt uses Eagle rods in their High horsepower (insert Domestic or 4 cylinder import here). the Truth is that the rods themselves are not weak... sure they are made in china, but thats not the problem. The problem lies within the Cap screws. the Cap screws, if you look at a set of current production Eagle Rods, are fitted with "ARP 2000" series rod bolts. these are what come with the Eagle rods if you just order a set Off-the-shelf, no questions asked. As it turns out, these rods have been rumored to fail in high horsepower 2jz's. Eagle rods have gotten the Stigmata that they are WEAKER than the stock 2jz rods. typically, the weakpoint in the stock 2JZ's are their rods. they fail at a lower stress level than the pistons do. so theoretically, you can do 1000rwhp on stock pistons and upgraded rods. however, due to the fact that the Eagles come w/ the ARP 2000's, and the urban legend of rod bolt failure is abound; its general consensus that the Off-the-shelf Eagle rods are a DOWNGRADE for 2jz's. this worries me. if an off-the-shelf Eagle rod has failed in a 2jz before hitting 1000rwhp, how are any one of Us supposed to expect to hit that mark?
Turns out, if you want High horsepower-capable rods, you need to specify that you do NOT want the ARP 2000 series bolts. the SAY that the bolts can handle 1000hp in our applications and that Domestic guys are making those power figures... but just tell them you want at least the L19 series bolts. i personally think that for any one of us shooting for the 1000rwhp mark (i know a couple of us are), then you should order up the ARP3.5 (AMS5844) or Custom Age 625+ series rod bolts for your Eagle Rods. with these optional rod bolts, the price may jump up, but the added insurance is worth it for anyone trying to Rev past 6500 and make over 700rwhp.
hope that explains....
http://www.briancrower.com/makes/toyota/7mgte.shtml
these crower rods i assume are the arp's 2000 bolts as well because its tensile strength is 220,000 p.s.i which is on par with the eagles.
my buddy has the crowers and he rev's his motor to 7000rpm all the time.
I'm sure the arp bolts in the eagle rods are good, but to an extent which i don't know, and until i do know, i'm gonna give them a shot.
Didn't someone on this forum make 660+rwhp on the eagles?
these crower rods i assume are the arp's 2000 bolts as well because its tensile strength is 220,000 p.s.i which is on par with the eagles.
my buddy has the crowers and he rev's his motor to 7000rpm all the time.
I'm sure the arp bolts in the eagle rods are good, but to an extent which i don't know, and until i do know, i'm gonna give them a shot.
Didn't someone on this forum make 660+rwhp on the eagles?
BME (Bill Miller Engineering) does custom Forged Alum . Rodsthey can be found at www.bmeltd.com these are one of the best alum. rods on the market.IMHO