connecting rods
#1
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connecting rods
im starting my build already have stock bore ams pistons now im looking to buy so connecting rods ive been looking around and there is alot to chose from so i would to get some suggestions on what other people have used im lookin to put down a solid 550 to 600 whp.....please help
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#9
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I agree 150%. I've always been cautious in motor mods to remain totally reliable. I went with the Manley H-beams because I wouldn't be reaching 500whp and preferred the lighter weight. The result was two rods breaking in half at around 5000rpm, 11:1 pistons, 26psi, E-85. The tune was not agressive and no knock was measured. The lower halves of the rods remained connected to the crank and beat holes in the block. My engine builder surveyed the damage and found a .020 thickness variance in a critical part of the failed H-beams. Not going with an I-beam rod cost me a $6000+ rebuild. There are several good I-beams including those from Manley, Pauter and Howard. If you want to save money, do it smart. Howard makes top quality, 1000whp+ rods that are only a little more than the H-beams.
#11
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Chris, if I'm not mistaken... Your rods are also 100lbs a piece, correct?
heavy weight=destroying rod bearings (prob only last 15k miles if your luck)
Mikey
#12
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I totally agree! I would recommend I-beams to anyone, unless they were 1000hp H-beams which I like more. I would personally look into GSC's new lightweight H-beam that is rated to 1000hp. Not sure if they are released yet but I know Greg is making them/testing them as we speak. I have GSC rods in my car
Chris, if I'm not mistaken... Your rods are also 100lbs a piece, correct?
heavy weight=destroying rod bearings (prob only last 15k miles if your luck)
Mikey
Chris, if I'm not mistaken... Your rods are also 100lbs a piece, correct?
heavy weight=destroying rod bearings (prob only last 15k miles if your luck)
Mikey
Last edited by ChrisCarey; Jan 5, 2011 at 08:39 AM.
#13
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Haha 630 grams (lighter than Manley I Beams by 40 grams) but you were in the ballpark Its all personal preference I guess, I'd rather have a beefy rod to ensure there is sufficient material in all the right places (thus the purpose of finite element analysis) than try and cut weight out of a critical engine component. Additionally our rods feature the early 4g63 rod bearings that are wider to support additional load, we have yet to hear of a bearing issue with any build utilizing our rods
Mikey
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