All of our rods are magnafluxed, heat treated, stress relieved, shot peened, and sonic tested to ensure they provide the strength required for high horsepower applications. Our exclusive “no twist” machining processes guarantee the most accurate pin end to big end parallelism in the industry. We weight match all of our sets of rods to + or -1.5 grams to make balancing easier. Silicon bronze bushings are installed for use with floating pins. Bolt lube and torque specifications are included. ZZPerformance rods are also equipped with ARP 2000 bolts and are rated for 800 horsepower.
The LSJ version of this rod was tested in Ryan's 2006 Cobalt to 898WHP w/o failure!
Torque spec is 55 ft-lbs with ARP lube.
From the factory, tangs are installed facing exhaust side so we do the same. The rods are symmetrical it does not matter which side they face.
Fits the 2.0L LSJ & LNF, 2.4L and '07+ 2.2 engine.
Won't work with the stock pistons, must use forged pistons.
Ecotec rod weights:
Stock LSJ rod is 640 grams
Stock LDK rod is 580 grams
ZZP 4340 2.0 and 2.4L rod is 620 grams
The drop down menu has 2.0L or 2.2/2.4, I am also in the line of thinking that Jesse has in that 2.2 and 2.4 rods are completely different and would like to know if they aren't.
Question by: Trevor on Oct 17, 2015 9:07:00 PM
Our 2.2/2.4 rods work in either 2.2 or 2.4 but the piston bore changes so you have to match accordingly. Please email for specific piston choices to go with these rods for your pistons
Answer by: Zoom Iwuagwu (Admin) on Nov 9, 2015 12:14:00 PM
If I upgrade the connecting rods to the 4340 and forged aftermarket pistons on the 2.2 LAP running the stock compression ratio of 10:1 would I need a tune or could I just wait until I installed a turbo?
Question by: Ricky on Dec 21, 2016 1:15:00 PM
As long as you are running stock compression you shouldn't need to change anything. However, you will always want to have your car scanned just to make sure your vehicle is running correctly. For more inquiries please email firstname.lastname@example.org
Answer by: Ryan D (Admin) on Dec 21, 2016 1:43:00 PM
Will these rods along with your forged pistons change stroke compression ex...
Question by: Jj on Aug 22, 2016 3:20:00 AM
These are stronger stock replacement rods, just like the pistons. If you change your crank and order the appropriate rods/pistons you can then end up having an engine with a different cubic inch. Some of our pistons have different compression ratio options available.
Answer by: Tim Beek (Admin) on Aug 23, 2016 10:38:00 AM
Our rods are made of 4340 Chromoly, a strong steel alloy made principally of chromium and molybdenum, steel as the name suggests. You have nothing to be concerned about, they have been tested to 800+whp on our vehicles and have seen 4+ years of daily driving at high horsepower with zero issues/failures.
Answer by: Ryan D (Admin) on Dec 5, 2016 11:53:00 AM
The listing shows both 2.2 and 2.4 rods as the same thing. However, to my knowledge the two are very different lengths and the LE5 has a tapered slot for piston/rod interface. I was thinking of picking a set up for my hardcore build, but I am concerned about this. Do aftermarket pistons make this irrelevant? Forgive my confusion.
Question by: Jesse on Sep 27, 2015 10:39:00 PM
the photo is just a generic stock photo. if you select the LE5 option, you will get the LE5 style rods.
Answer by: Steve Hickman (Admin) on Sep 29, 2015 2:07:00 PM