aluminum rods
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aluminum rods

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    Senior Member steele211's Avatar
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    Default aluminum rods

    So what's the deal with these things? I've heard that they have a short life. Any truth to this?

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    Senior Member wagspe208's Avatar
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    Of course it is. They are for race stuff. Not endurance stuff. Now, the argument starts on lifespan, but they definately have a lifespan. Steel rods run forever if all is well. Put in a set of pin bushings every few seasons. Resize once in a while. Aluminum, plan on having paper weights.
    Wags

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    Ain't Right Racin piston in the wind's Avatar
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    We've ran the same Oliver steel heavy weights with the rod bolt upgrade for 9 plus years. Five of those years they were in a 12.7: 1 468 with 30 -38 psi boost. Everytime we've had em checked they were fine. Only broke 1 callies crank but that was due to detonation not the steel rod. My fault ! It may have lived with the aluminum rod though ??
    Last edited by piston in the wind; 07-10-2012 at 07:55 PM.

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    Quote Originally Posted by wagspe208 View Post
    Of course it is. They are for race stuff. Not endurance stuff. Now, the argument starts on lifespan, but they definately have a lifespan. Steel rods run forever if all is well. Put in a set of pin bushings every few seasons. Resize once in a while. Aluminum, plan on having paper weights.
    Wags
    The key is to change them one run before they break.
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    Quote Originally Posted by steele211 View Post
    So what's the deal with these things? I've heard that they have a short life. Any truth to this?
    application, application

    BME has alumi rods in street cars and tow vehicles with over 100k miles on them.

    I have a friend who built a 383 chevy for an 80's Z-28 the guy who owned it put over 75k hard miles on that engine over the years.


    What are you looking to do?

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    Quote Originally Posted by Infomaniac View Post
    The key is to change them one run before they break.
    well of course

    S CP

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    Senior Member steele211's Avatar
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    Drag motor but what I'm hearing already makes me not want to go that route. Rather have the longevity

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    Senior Member ol guy's Avatar
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    Quote Originally Posted by wagspe208 View Post
    Of course it is. They are for race stuff. Not endurance stuff. Now, the argument starts on lifespan, but they definately have a lifespan. Steel rods run forever if all is well. Put in a set of pin bushings every few seasons. Resize once in a while. Aluminum, plan on having paper weights.
    Wags
    Thank God!!! Aluminum rods are great but very short lived! Wags is beyond correct. they are great for qwick H/P and one season if you are lucky. The reasons they are short lived is beyond explanation. If you think about the use and abuse I think it will become self explanitory! Mark

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    Ain't Right Racin piston in the wind's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    application, application

    BME has alumi rods in street cars and tow vehicles with over 100k miles on them.

    I have a friend who built a 383 chevy for an 80's Z-28 the guy who owned it put over 75k hard miles on that engine over the years.


    What are you looking to do?

    S CP
    Yea those deep cycle rods are bad ass. they are a lot more $$ than there regular rods. I don't think they woud last as long as steel would though when u start beating them with boost. Boats seem to be easyer on rods than cars. at least in the 1500 -2000 hp range

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    You guys have an old school opinion on aluminum rods BTW. They can last many years on a lake/race application.

    I don't recommend them for the typical hot lake boat but they live a lot longer these days.

    A set of aluminum rods designed for a lot more power than you are making will last a long time (several years) if aluminum rods are what you are wanting.
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    gn7
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    Unchained beat the hell out of a set of Bill Millers and never broke one. I think his current deal has GRP. Its all about the rod.
    The OLD day 7075 billet rods, and the OLD forgings has put a stigma on aluminum rods they will always carry.
    BUT, by the time you buy an aluminum rod up to endurance use, it will weigh as much as a steel rod, and cost as much or more than a decent steel rod.

    In a pleasure boat that gets hammered every so often, they can work. Unchained has shown that. In a drag boat, you would have to beat the hell of the rod that Force and Shumacher run to use it up. But they are HEAVY.

    From Bill Miller's website:


    The Only Streetable Aluminum Rod

    Urban legends abound in the gearhead community. One is: aluminum connecting rods don't work in street engines. Prior to the mid-'70s, that might have been true, however, introduction of the Bill Miller Engineering Forged Aluminum Connecting Rod in 1975 provided an exception to that myth.

    The BME Rod has great durability in high-end, high-power, street/strip or hot street engines because it is die-forged, rather than cut out of a plate. Bill Miller Engineering's unique, aluminum alloy further enhances fatigue strength such that the durability of BME Rod rivals that of many forged steel rods and exceeds that of a few.

    About 20 years ago, a few resourceful engine builders, led by H-O Racing's, Ken Crocie, began using BME Rods in very-high-performance street engines. Crocie, a racing and street/strip Pontiac V8 specialist, faced with a shortage of acceptable steel rods for Pontiacs, began to use BME Aluminum Rods. While a few other engine builders followed Crocie's lead, admittedly, use of the Bill MIller Engineering Rod in street engines has not been widespread, but that's only because of its higher cost and the stubborn belief that any aluminum rod is unsuitable for street use.




    "In a street application, using the aluminum rod is a no brainer," BME President, Bill Miller, recently said in an interview with an automotive magazine. "I don't know how the myth that aluminum rods can't be used on the street got started, but I'll guess that, back in the 60s and early-70s, they weren't making them using the process we're using, today. With the material we've got and they way we manufacture the connecting rods, they'll live a couple hundred thousand miles on the street because a street application is, for the most part, low load. Our basic Aluminum Rod is made for 10,000 rpm and 800-hp. The design criteria for the connecting rod is way overkill for what it's going see on the street. We been running aluminum rods on the street for 20 years."

    Why build a street engine with BME Rods? One reason is the "cool factor." Bill Miller Engineering Rods are unique, high-end racing parts and there always will be people who spend extra money to have the same rods in their engines as Tony Schumacher or John Force puts in theirs. More importantly, there are practical reasons for using BME Rods—the same reasons racers use them: less reciprocating and rotating mass due to their comparative lightness. That allows the engine to accelerate quicker and make more power as it does so. Lighter rods also improve throttle response and allow the engine to run reliably at a higher rpm than it could with steel rods
    .



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    Last edited by gn7; 07-10-2012 at 08:23 PM.

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    since we are all family here I'll let you guys in on a little secret.

    BME has brand new rods in their "over-stock" bins(special order stuff that was not delivered mostly), if you contact them at just the right time you never know what you just might be able to pick-up for $500 per set:



    I was talking to them back in April and just happened to ask, " hey what do you have in the over-stock bin right now?"

    Kind of hard to beat a set of $ 1,200+ rods for $ 523 w/tax and delivery. I have no ideal what I'm going to use them for, but when something comes up I have them. The other set I got will be going in the turbo motor they were the same price but a different size.

    S CP

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    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

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    Senior Member ol guy's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    since we are all family here I'll let you guys in on a little secret.

    BME has brand new rods in their "over-stock" bins(special order stuff that was not delivered mostly), if you contact them at just the right time you never know what you just might be able to pick-up for $500 per set:



    I was talking to them back in April and just happened to ask, " hey what do you have in the over-stock bin right now?"

    Kind of hard to beat a set of $ 1,200+ rods for $ 523 w/tax and delivery. I have no ideal what I'm going to use them for, but when something comes up I have them. The other set I got will be going in the turbo motor they were the same price but a different size.

    S CP
    After a steel like that do you sleep good at night? Just kidding but what a deal! Mark

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    Quote Originally Posted by ol guy View Post
    After a steel like that do you sleep good at night? Just kidding but what a deal! Mark
    Just fine Mark, just fine

    I think a glass of wine might help tonight.

    And yes a hell of a deal. It was hard to pass on the second set that I don't need anytime soon.

    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

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