Aftermarket connecting rods?

[SliM3]

over revs and blows engine into smithereens due to rod failure --> buys povo spec rods............what could go wrong

Says the guy who regurgitates wikipedia and google searches but has never offered any real-world results. But since you know how to build everyone else's engine and dyno everyone else's car post links.

[digger]

over revs and blows engine into smithereens due to rod failure --> buys povo spec rods............what could go wrong

[timmo]

God Speed to you.

Nah the rods aren't from Godspeed, they're from Maxspeedingrods 😂

[WestBankM4]

You son of a *****, you really did it.

God Speed to you.

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[SliM3]

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[Darbshaw]

Stupid ass name, but they are basically Molnar/Eagle/K1 rods direct from the manufacturer. TUV certified to be true SAE 4340, ARP hardware verified to be genuine & weights well within the tolerances they stated. BE and SE measurements verified consistent and round.

Only thing you need to do is clean-up all the knife edges left from machining process, e.g. quick swipe with a file. Other than that no one really has any qualifying proof that these are shitty rods because they're 1/2 the price.

This I can agree with, a dumbass name for sure. I have them at the shop right now to check the little and big ends on them while I have it all there.
Even the guy at my machine shop was super impressed with the quality of these.

He brought up a good point with the rods nowadays though. In his words, “Computers are the ones left doing a lot of the manufacturing and processing for these. No longer is it someone who’s just punching away at a 9-5, as long as the metal and material is good Youre usually pretty set”


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[SliM3]

Took the leap and will throw the maxspeedingrods connecting rods (I really hate posting that name)

509g’s without ARP2000’s
565g’s with em


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Stupid ass name, but they are basically Molnar/Eagle/K1 rods direct from the manufacturer. TUV certified to be true SAE 4340, ARP hardware verified to be genuine & weights well within the tolerances they stated. BE and SE measurements verified consistent and round.

Only thing you need to do is clean-up all the knife edges left from machining process, e.g. quick swipe with a file. Other than that no one really has any qualifying proof that these are shitty rods because they're 1/2 the price.

EDIT: Also, lightly sand the bearing tang recesses in the BE's as they are also very sharp and might gouge the bearing shells during final stretch. My weights are the same as yours 565 grams.

[Darbshaw]

Took the leap and will throw the maxspeedingrods connecting rods (I really hate posting that name)

509g’s without ARP2000’s
565g’s with em


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[Mike RT4]

My research for the race car led me to these weights, in grams, on forged rods and pistons that I could find information on. Stock S54 rods are 632 grams and stock pistons are 470 grams.

Forged Rods
CP-Carrillo: 491
Pauter: 483
Arrow-Precision: 567
Supertech: 532

Forged Pistons
JE Pistons: 330
Mahle: 357
Wiseco: 370
Wossner: 316
Supertech: 306
CP-Carrillo: Surprisingly, couldn't get weight figure

Using CP-Carrillo rods and JE Pistons instead of stock saves 1,686 grams, or the weight of 1 1/3 rods and 2 1/2 pistons. I'm sure there are other rods/pistons out there, but these are those I'm willing to spend money on for my internals.

Feff

The CP pistons are 333g:

https://store.langracing.com/cp-forged-piston-set-bmw-s54/#gallery-7

[digger]

You’d want to check the big end and little end size with professional equipment and to make they are straight/flat and bores are perpendicular

[SteelGreyM]

They’re not finished in the USA? Well there’s your answer on why they’re so cheap

Is cutting $200-300 really worth it?

[Mspir3d]

😆 it all depends on your risk tolerance. What’s the worst that could happen?

[Arith2]

Idk, maybe the fact that they’re strictly just imported? No rebrand, no final finish in USA. Just supplier direct. They’re metal has been tested and holds up to standard. Maybe I’ll give them a swing after all and help open a new avenue for us.


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Hopefully Ian isn't reading this thread...

I think it's fairly safe to test them.

[Darbshaw]

Pretty much. Like any rod manufacturer, if they're way off or something, they'd probably send another set. I just want to know what corners they cut make them that cheap.

Idk, maybe the fact that they’re strictly just imported? No rebrand, no final finish in USA. Just supplier direct. They’re metal has been tested and holds up to standard. Maybe I’ll give them a swing after all and help open a new avenue for us.


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[Arith2]

Every other community has good experiences with them


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Pretty much. Like any rod manufacturer, if they're way off or something, they'd probably send another set. I just want to know what corners they cut make them that cheap.