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post #1 of 5 (permalink) Old 09-26-2017, 12:48 PM Thread Starter
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Aluminum Rods

Hi, I'm looking to swap from h-beam rods to aluminum. Can anyone please give their opinions on which brand they like over another? I'm new to these rods, so not sure how to go about getting a set. My current h-beams are 2.220 mains(bbc), 6.800 long, .990 pin dia, and Diamond Racing pistons w/ 12.2 ish CR made for an 871 on alky. By switching to these rods, do I have to change pistons too? Any and all info is welcome!

Thanks, Mike
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post #2 of 5 (permalink) Old 10-01-2017, 01:57 PM
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I do not have aluminium rods but if I did I'd most likely have these:

BME Forged Aluminum Rods

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post #3 of 5 (permalink) Old 10-01-2017, 02:22 PM
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Quote:
Originally Posted by MrScharfenberger View Post
I do not have aluminium rods but if I did I'd most likely have these:

BME Forged Aluminum Rods


what no alum rods in your b uild?

ever run it thru the 1/4 yet?

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post #4 of 5 (permalink) Old 04-14-2018, 05:22 AM
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Garage
BME 396 casting for NA, or 426 casting for NOS or blown. I've had mine in for over 100 runs , checked by BME agent here in Aus about 20 laps ago and still perfect. 1000+ hp @ 8500rpm, have zinged it to 8800 a couple of times. Run big clearances and big oil (Lucas racing 50+) Good rods. Of course you will have to get the balance looked at as the Ali rods will be lighter.
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post #5 of 5 (permalink) Old 10-09-2019, 02:53 AM
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coefficient regards

Please realize that 1) everything will have to be rebalanced. 2) Aluminum has a different coefficient of expansion and, as such, you should consider a minor change to your piston height. Warm rod stretch will be greater, and if you are running a minimal piston-to-deckheight clearance as I suspect you are, perhaps think of giving yourself a little more clearance to be on the safe side.
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