Aluminum Rods
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Aluminum Rods

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    Senior Member steele211's Avatar
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    Default Aluminum Rods

    I have 2 sets of Brooks rods out of my alky motor and was curious where people are sending there old rods to have them checked or if this is something that just isn't done. im in central cali but dont mind shipping them off somewhere.

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    Senior Member steveo143's Avatar
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    Grose racing in lodi!
    steveo143 AKA DiMarco 21 II



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    Quote Originally Posted by steele211 View Post
    I have 2 sets of Brooks rods out of my alky motor and was curious where people are sending there old rods to have them checked or if this is something that just isn't done. im in central cali but dont mind shipping them off somewhere.
    Aluminum rods? How many runs on them? Anything over 75 hard passes I'd use them for paper weights!

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    Any good machine shop should be able to verify dimensions. Don't know that anyone can tell where they are in their fatigue cycle. Top of the stroke is tick bottom is tock and that's the clock running out. The manufacturer should be able to give you an idea on how they see the rods lasting for a given use.

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    Senior Member SHAWN DAVIS's Avatar
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    Brooks been closed for a couple years now

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    LP-25.com Infomaniac's Avatar
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    Metal fatigue cannot be measured.

    If you don't know the number of cycles on an aluminum rod it's junk. If it's been in a situation where it needs resized it's a roll of the dice.
    If For Some Reason I Do Something Worthy Of Recognition. God Provided The Ability And Deserves The Credit.


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    What the Hell is That? 72Hondo's Avatar
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    Quote Originally Posted by Infomaniac View Post
    Metal fatigue cannot be measured.

    If you don't know the number of cycles on an aluminum rod it's junk. If it's been in a situation where it needs resized it's a roll of the dice.


    Not exactly true.

    Airplanes for instance have very special eqt in which a dye penetrates the metal then they put some sort of scanner thing on there to check for metal fatigue, hairline cracks, the works. They use it on Wing bolts & landing gear.

    I think its called NDT or Eddy Current. Usually only certain people and companies can do it due to strict regulations. It's also very very expensive.


    Theres probobaly more to it that I dont know.
    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

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    Distinguished Member David 519's Avatar
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    Quote Originally Posted by 72Hondo View Post

    Not exactly true.

    Airplanes for instance have very special eqt in which a dye penetrates the metal then they put some sort of scanner thing on there to check for metal fatigue, hairline cracks, the works. They use it on Wing bolts & landing gear.

    I think its called NDT or Eddy Current. Usually only certain people and companies can do it due to strict regulations. It's also very very expensive.


    Theres probobaly more to it that I dont know.
    NDT stands for Non Destructive Testing and includes a lot of techniques of which Eddy Current is one of them. I'm not an airplane expert but I can't imagine a single part in an aircraft that puts up with as much abuse as an aluminum rod in a racing engine and no form of NDT could adequately quantify their remaining life.
    Personally, if I didn't buy the rods new and know the engine tune for every single pass, I'd never reuse an aluminum rod. Old aluminum rods account for many engine explosions. Now a days, steel rods are so good, I wouldn't use an aluminum rod in anything short of a big HP blown alcohol or very high RPM PS deal. All that said, some people seem to get away with stuff I don't so YMMV and good luck!!
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    ....... David 519 is 100% correct........

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    What the Hell is That? 72Hondo's Avatar
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    Funny we just had to change an entire engine because the temp was 880 C for 10 seconds.

    The manufacture states 850 or so for a maximum of 2 seconds or some where along those lines.

    Better safe than sorry.


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    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

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    Senior Member TurboNova's Avatar
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    We ran GRP aluminum rods on this years Drag Week race where we drove 1500 miles and raced at each race track each day. idle, cruise down the highway and raced. Same engine and same rods last year same race. It's a small block that spins 8600 rpms and 35psi of boost 2000 hp. I have run them way more than 75 passes. Same thing is going into my 598BB twin turbo engine.

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    Quote Originally Posted by TurboNova View Post
    We ran GRP aluminum rods on this years Drag Week race where we drove 1500 miles and raced at each race track each day. idle, cruise down the highway and raced. Same engine and same rods last year same race. It's a small block that spins 8600 rpms and 35psi of boost 2000 hp. I have run them way more than 75 passes. Same thing is going into my 598BB twin turbo engine.
    2000hp,I wish you good luck and many miles of happy motoring!

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    How did you do this year Brian? That car is bad ass!

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    Back into Boats Beal Motorsports's Avatar
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    We had a fellow racer show is what he was doing with is used parts. He would buy clocks from KlockIt.com that fits into the crank end of the rod. Then take your old pistons and assemble them on the rods. He used aluminum pipe as the wrist pin the spot weld them all together so they don't move. Makes awesome gifts for sponsors or friends for their desk. We are planning on trying a few this year.

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    Quote Originally Posted by Beal Motorsports View Post
    We had a fellow racer show is what he was doing with is used parts. He would buy clocks from KlockIt.com that fits into the crank end of the rod. Then take your old pistons and assemble them on the rods. He used aluminum pipe as the wrist pin the spot weld them all together so they don't move. Makes awesome gifts for sponsors or friends for their desk. We are planning on trying a few this year.
    I weld a piece of 2 X 2 to them and sell them as hitch covers.

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