Never used them, but I can say by the looks of them the seller is a thief, and the buyer thinks so too.
The **** being said ain't even close to the **** he sells.
Seller stated "good to go" right?
Maybe you should buy them if "that" is perfectly normal?
View attachment 1716493280
If I had a big block and I wanted aluminum rods I would buy them.
I can’t tell you how many aluminum rods Ive knocked the pins out of, resized the big and pin end and put them back in service.
Every heat cycle causes the big end (and to a smaller extent the pin end) to close up. If you watch the oil pressure you can see the hot idle oil pressure creeping up because the rod is shrinking and the clearance is getting tight.
On my engine I knew once the hot idle oil pressure was up over 5 pounds I needed to pull the rods and resize them.
Shockingly to some, most of the aluminum rod failures I have seen (NA) aren’t because the rod failed but because the rod got tight and the bearing grabbed the crank and rapped out the rod.
When I first started using aluminum rods (my first set was Childs and Albert) the minimum oil clearance they wanted was .0035! I was stunned but that’s where I set the clearance. Which meant that I had to run a minimum of a 50 grade oil, which I don’t care for.
It took a long time for the oil pressure to start going up. And the bearings always looked like ****.
I went through my first set at 225 runs. My next set I went in at .0028 and the bearings looked better, I could run a 40 grade oil in the spring and fall and I could see the oil pressure changing sooner.
By the time I switched back to gasoline from alcohol I was down to .0023-.0024 and I could run a full synthetic 30 grade oil. The bearings looked new when I pulled it down (which was every 50 runs or so to get a look at ****) and the rods went longer between resizing.
BTW, a heat cycle on an aluminum rod is basically a day at the track. Not how many runs. Unless you are talking blown alcohol then it’s a bit different. You start counting runs.
But NA it’s a day at the track, not every run. And on the street it’s the same. If you drive the car but shut it off several times during the day it’s still one heat cycle.
The heat cycle is from ambient to full temperature.