Part 2 pinion angle. A ladder bar or 4 link setup is much more rigid and therefore usually only needs 1 3 degrees.
Experiences 4link Setup Slippery Tracks Page 2 Dragstuff
Setting pinion angle 4 link. A properly designed 4 link will have minimal pinion angle change over the stroke of the suspension. If you are running a 4 link suspension system you can adjust the upper rear end links in or out to bring the variation back into where it needs to be. To start viewing messages select the forum that you want to visit from the selection below. The typical leaf spring rear suspension will need 5 7 degrees of negative angle. Place angle finder on bottom of driveshaft and write down the reading. Be sure to check out all of the other videos in the series.
Part 3 pre load. If this is your first visit be sure to check out the faq by clicking the link above. This is when the yoke of the rearend is tilted upward more than the driveshaft. According to bickel a ladder bar suspension normally requires degree of pinion angle a four link requires 1 2 degrees and a leaf spring suspension requires up to 6 to 7 degrees. On a triangulated four link factory gm or ford the upper bars are also used to set the pinion angle by adjusting both uppers the same direction and same amount. Basically you want 3 5 down on the engine and trans 3 5 up on the rear.
You never want the rearend setup with positive pinion angle. Click the register link above to proceed. Part 2 in our series of tutorial videos that explain drag racing 4 link rear suspension set up shows you how to set pinion angle. What is the most accurate method for setting pinion angle on a 4 link rear. Set the angle finder on the face of the yoke where the u bolts go through. Also look to make sure the transmission mount itself has not collapsed as this could cause a change in angle as well.
You want the pinion angle set equal to but opposite of the enginetrans. Rotate the pinion so that the ujoint caps on the yoke are pointing up and down. You may have to register before you can post. Part 5 ride height. Just think of it like one cancels out the other and youll remember it then. Part 4 anti roll bar.
Part 1 rear end alignment. If the vehicle is equipped with leaf springs then you can use wedge shaped aluminum shims to move the pinion up or down.
Gallery of Setting Pinion Angle 4 Link
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