Group Evo IX Engine Build
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Joined: Jul 2012
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From: California
This is strictly my opinion. This is my thinking:
The H Rod has cross sectional metal where it matters as rods rotate. It distributes the rotational energy better within the rod. I Rods are stronger at the extreme ends, which are the two thick ends when those are in compression and (especially) tension. But the strength from the larger mass is also the cause the the extra moment, which isn't there on the H Beams. My opinion is that for rotational purposes, H Rods are the better design.
And Carrillo because of their quality control. The rod bolts are the weakest part of high revving rods. Carriage bolts are like ARP's 625 bolts.
I almost forgot the best part. These rods are about 100g less than Manley Turbo Tuff rods. This is a huge reduction in forces at 8500 RPM. And that makes crankshaft happy
The H Rod has cross sectional metal where it matters as rods rotate. It distributes the rotational energy better within the rod. I Rods are stronger at the extreme ends, which are the two thick ends when those are in compression and (especially) tension. But the strength from the larger mass is also the cause the the extra moment, which isn't there on the H Beams. My opinion is that for rotational purposes, H Rods are the better design.
And Carrillo because of their quality control. The rod bolts are the weakest part of high revving rods. Carriage bolts are like ARP's 625 bolts.
I almost forgot the best part. These rods are about 100g less than Manley Turbo Tuff rods. This is a huge reduction in forces at 8500 RPM. And that makes crankshaft happy
Last edited by 2006EvoIXer; Jul 4, 2018 at 12:02 AM.
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