Originally Posted by JohnRR
Originally Posted by PhillyRag
[CTquote=ThermoQuad]I work in the world of dimensional metrology so i understand gears, gear sets manufacturing etc.

Noisy gears are from poor dimensional tolerancing meaning the parts are not made to print specifications so they are essentially wearing on each other hence the noise.


Wasn't the 833 18spline known to be noisier then the 23spline?
So by your statement: was the 18spline intentionally made "poorly"?


Quote
The 18 spline is noisier because of the pitch of the gear teeth is different than the 23 spline.


Actually it's the angle of the teeth not so much the pitch that makes the noise. Straight teeth are the strongest and that is what you will find in a dedicated race transmission like a Liberty or Jericho. It's stronger but sounds like an old dump truck. Oem style gears are angled to reduce noise. Since the 18 spline Hemi gear sets are expected to handle more torque than a 23 spline they were designed with less angle than the 23s which makes them slightly stronger but somewhat noisier.

Last edited by GomangoCuda; 06/12/23 10:03 PM.
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