Rotating Assembly Connecting Rod Weight

[952g63t]

I have my pistons and crank dialed in but am looking at the connecting rods now. The ones I am looking to get are heavier than the second choice by approximately 188 grams. A lighter rotating assembly means a more responsive throttle but would 188 grams be considerably noticeable? I'm not trying to build the worlds fastest DSM but if the differences in weight are significant than I would rather choose accordingly.

Thanks,

 

[Ryannterror]

IMO you will not notice 188 grams on a rod at all.

 

[952g63t]

IMO you will not notice 188 grams on a rod at all.

Yeah, it's the cumalative weight difference of all four rods. Thanks for the input Ryan.

 

[mercaholik]

I would hope cause 188 grams per rod would be for sure noticeable. Even cumulative you might notice it revs easier and faster, but first you need to know if the lighter rods will meet your expected power. Are they I beam or h, what kind of rpm are you gonna spin to and in what application (drag, auto x,etc)?

 

[952g63t]

I would hope cause 188 grams per rod would be for sure noticeable. Even cumulative you might notice it revs easier and faster, but first you need to know if the lighter rods will meet your expected power. Are they I beam or h, what kind of rpm are you gonna spin to and in what application (drag, auto x,etc)?

I intend to eventually track the car to some extent but also keep it streetable with a projected power range around 500hp. Not looking to rev outside of 7500, at least not for any extended periods.

I was comparing Manley and Skunk2 Alpha series H beam rods. The Manley's were the lighter of the two but the Skunks have a wider h beam section which supposedly provides additional rigidity, plus a few other unique features. I ended up going with the Skunk2's. Risky choice maybe, this series of rods seem to be relatively new for the 4g63's so finding information about how they have performed for others has been limited. At any rate, I like taking risks and wanted to give them a shot.

They arrived yesterday actually, so far they look great. I have not had time to confirm all of the clearance measurements yet but was able to test-fit a wrist pin last night, it seemed accurately clearanced.