Pinion Angle
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Pinion Angle
Posted: March 22 2006 09:56 PM
 
Jim Hardy (aka farmer) [ View ] [ vhardy@adams.net ] [ Car Ads ] [ Blogs ]
Carthage, Illinois
(217) 845-3721
 

After searching previous posts on the subject ( as many as available) I need a little enlightenment. My engine, carb base level is at 4 below horizontal, the differential is set at 4 degrees above horizontal. Ride height is set (tractor weights to compensate for fluids, interior etc), and mock up drive shaft installed. Everything looks correct but is spring wrap a concern when setting the pinion angle.



Mild small block, 2004r, 9 inch rear.

 
 
Comments
 
Posted by farmer  -  03/22/2006 10:03 AM

41 olds 2 door sedan. Almost a copy of the 41 chevy 2 door. Chassis Engineering rear spring set up as used for the 41 chevy.
farmer [ View ] [ Email ] [ Blogs ] [ Car Ads ] Carthage, Illinois
 
Posted by bigdude  -  03/22/2006 10:26 AM
Go from the output shaft on your trans,depending on your horsepower- set your pinion at a parallel with it or you can preload it a couple of degrees for spring wrap.
resident know it all [ View ] [ Email ] [ Blogs ] [ Car Ads ] Three Rivers, Michigan Charter Member since January 2004
 
Posted by bigdude  -  03/22/2006 12:25 PM
Down,the pinion will move up under power.
resident know it all [ View ] [ Email ] [ Blogs ] [ Car Ads ] Three Rivers, Michigan Charter Member since January 2004
 
Posted by Rods & Customs by Leon  -  03/22/2006 09:56 PM
With a mild small block, Pre-loading the pinion angle should not be done. You not working with enough horse power to be a concern. Pre- Loading a pinion angleis something thats done with Drag cars that are under a hard and then constant load. Your driving a basic street car, Its smart to build it like one. Pre-loading it will also give you a vibration at normal highway speed. Set it up normal, you`ll be much happier.
Rods & Customs by Leon [ View ] [ Email ] [ Blogs ] [ Car Ads ] Highlands, Texas Charter Member since May 2004
 
Posted by farmer  -  03/22/2006 01:42 PM

Thanks bigdude. The car is over the service pit and I'm just trying to make sure everythign is right before the body comes back off and everything gets welded.
farmer [ View ] [ Email ] [ Blogs ] [ Car Ads ] Carthage, Illinois
 
Posted by pasadenahotrod  -  03/22/2006 09:52 AM

What kind of car are you working on here?
pasadenahotrod [ View ] [ Email ] [ Blogs ] [ Car Ads ] Pasadena, Texas
 
Posted by Crazyhorse Rod Shop  -  03/22/2006 10:44 AM
ole big dude showin off again but he's right on. but carb level has no bearing. your working with crankshaft/pinon.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by farmer  -  03/22/2006 11:57 AM

I think faster than I type and my typing is really slow. I left out transmission/crankshaft is at 4 below horizontal wich makes it parallel with the pinion. Would that be a couple of degrees up or down... can't see it in my mind.

farmer [ View ] [ Email ] [ Blogs ] [ Car Ads ] Carthage, Illinois
 
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