How to lower a Nissan/Datsun pickup truck

1 Oct 2014 | Author: | Comments Off on How to lower a Nissan/Datsun pickup truck

Nissan Datsun

DIY guide to lowering a Nissan/Datsun truck

Many people to be curious as to the lowering of their when they get them. is the simple process to lower a or Datsun truck. It covers all the way from back in the Datsun through the hardbody days.

The uses lowering blocks in the and adjusting the torsion bars in the

Skill Level: 2 of 5

Time 1 to 3 hours depending on your

Tools Required: You will need a socket wrench and an end wrench. The size socket and end will likely depend on the your truck was produced so it is to check what size you need before starting.


You will need a set of blocks which can be found at local parts stores as checker. You simply go up to an employee and them what you#8217;re for as they are typically in the back. come generally in 2#8243; and 3#8243; blocks and will the truck accordingly.

Longer u-bolts will be needed; your best bet is to the old ones off once you get going to out the size as different model may have different sizes. The will need to be extended in to the size block you purchase. New and washers are typically included the u-bolts. Lastly you will new #8220;drop shocks#8221;.

These are specifically made for the change in height that your is giving you.

For the front, of model Datsun truck you may need longer bolts in of the stock torsion bar anchors as Make sure these are grade 8.



I. With chucks around your tires jack up the rear and put under the vehicle. Once the is up, release the jack so the springs drop to full extension, but full extension is reached use the as support for the axle while

II. Unbolt all four nuts the u-bolts (see pic 1). The typical size is a 19mm deep though it should always be as your truck may be different. unbolt both the top and bottom of the shock and remove it. The top is typically and the bottom a 16mm.

Once the is removed, the u-bolts can be removed the lower plate and the whole can be removed from the axle.

Repeat on other side of the

IV. Jack the axle back up as to the axle from the leaf

V. Slide the lowering block place in between the axle and springs. There is a tab on the block and will face down a hole in the leaf spring. The tab on the axle will fit into a found on the opposite side of the tab on the

VI. Repeat on the other side of the A partner may be helpful for this as the other side may be unseated putting in the second side#8217;s The bet way is for one person to set in the blocks and then the axle while a second then lowers the jack to full extension.

Leave under for support.

VII. Put the new around the axle.

VIII. the lower plate and torque the new to the u-bolts at 75-85 ft lbs. after 100 miles!

IX. Repeat on other side.

X. new shocks. Attach the lower end of the new in to both sides. You may need to the axle up a couple inches in to attach the tops of the shocks.

attached and everything is tight, the jack stands and lower the

Here is a picture of the leaf with the blocks, and new shocks

Nissan Datsun


I. With the e-brake on and chucks around rear jack the front end of the truck up and put it on stands.

II. Proceed to the torsion bar bolts which are shown in 2. If you are having trouble finding refer to picture 3. Picture 3 the path the torsion bar takes to the anchor bolts from the suspension.

III. Put your socket (typically 17mm) on the bolt and the open end wrench (typically on the nut on top of the bolt.

IV. Turn the bolt (loosen) to lower the front You will need to choose own ride height when this as there is not a 1:1 ratio for movement to lowering height. means you may end up jacking the truck up and several times before you get it right.

Each time you let the shocks settle before height. With older trucks keep in mind you may longer bolts to achieve desired drop.

V. Remove stands and drop the truck.

VI. Go get a end alignment because both toe and camber will be out severely. You may that if you have frame your camber may not be able to be readjusted due to the new drop.It took me an hour by myself to lower the and you can bet on about 5 minutes for the front if you get the height right the first otherwise jacking up again and so on take a bit longer.

Here is a picture of the torsion bar bolts, notice the clean showing where the bolts adjusted.

Here is a shot of the bar itself, where it connects to the arm.

This is what the will look like finished. It could be slightly depending on what size you use.

If you have any questions you may them here: Lowering a pickup truck.

This was written by Anthony Perez )

Nissan Datsun
Nissan Datsun
Nissan Datsun
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