We have rebuilt a ton of these 4 and 5cyl atlas motors and they all seem to fail due to one single component. The balance shafts.
By nature these wobble around and make it feel like the motor vibrates less. Think of it as noise canceling headphones for your motor...
The less often you change your oil and the poorer quality oil you use the more likely you'll be calling us to build you a brand new motor.
OR.............
You can delete these stupid balance shafts entirely with our kit.
Whether you're fitting these unique 4 and 5cyl Atlas Motors into your project car or daily truck, this delete kit will replace the very things trying to kill it.
The 4.2l Atlas motors made popular by most notably Richard Holdener and NIVLAC57 over on YouTube are awesome baselines for making some really impressive power and ironically don't require balance shafts. Unfortunately, they're super long and require custom oil pans to be made to fit your project.
The smaller 4 and 5cyl options may be a better choice as they're considerably shorter and already come with a rear sump oil pan.
The only unfortunate part is that they came with balance shafts and if the bearings loose tolerance you will absolutely destroy your motor.
Previously you could just delete the rear timing chain and leave the shafts in but you're still at the mercy of the oil tolerance and the weight of these shafts still being inside your motor.
With these shafts deleted there will be some increase in vibration at lower RPM. Certainly not unbearable but worth noting.
Advantages:
Weight reduction ~12lbs
Increased oil flow to crankshaft mains, connecting rods, cams, lifters and front timing chain.
Reduced risk of motor failure by removing the things that destroy these motors.
Disadvantages:
Increased vibration under 1500-2000rpm
KIT INCLUDES:
-Necessary bushings to block all the oil passages
-Installation Tool
We strive to do the absolute best job possible in sourcing and designing all of our products. We guarantee they'll fit and work, as designed, right out of the box. On the off chance something is lost or damaged in transit, we will do everything in our ability to make it right. Please understand we cannot warrant against faulty installation, driver error, acts of God, or whichever Covid variant
is currently laying waste to society as we know it.
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Effective January 1, 2018 all canceled orders will be subject to a 15% cancellation fee.
Installed items are not available for return for any reason.
Rebuilt motors are not available for return for any reason.
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