Sub-Frame Lift Kit Installed

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Code Pathfinder
Posts: 133
Joined: Thu May 18, 2017 6:54 am
Location: Minnesota

Sub-Frame Lift Kit Installed

Postby Code Pathfinder » Mon Nov 25, 2019 11:13 pm

2-inch sub-frame lift installed in the rear.

The front sits at 3 inches lifted and the rear now sits at 3.50 inches lifted (the rear sat at 1.75 inches lifted before the sub-frame lift)

Here s a list of the parts I used. (I put this kit together myself.)

3ft cut to the proper length) 2x2 1/4 wall T6 6061 Aluminum Square Tubing (painted gloss black).

6) M14x1.50 130mm long Grade 8.8 bolts from fastenal.com

2) Rancho RS9000XL Armada shocks. These shocks are the proper length for the pathfinder after you lift the sub-frame 2 inches.

2) extended brake lines from performancelifts.com The brake lines I ordered were for the front but it turns out they will work in the rear.


Overall its a pretty straight forward job to do.

I didn’t install my extended brake lines.

The flange nut was seized on both brake lines pretty bad.

I tried heat with some PB blaster but it felt like I was gonna snap the line the second I tried turning it

I’m going over to a 4x4 shop for an inspection on Tuesday and I’ll ask if they can do anything about that.

Here are some install pics (sorry for the tough angles. should've taken them with the wheels off)

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As you will notice, there is alot of washers on that one bolt. It turns out that the 130mm long bolt is too long for that front sub-frame mount. ill be ordering slightly shorter bolts. looking at possibly 100mm in length.

On to the next project :twisted:


MountainAME1981
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Joined: Sun Dec 22, 2019 3:22 am

Subframe lift

Postby MountainAME1981 » Sun Dec 22, 2019 4:24 am

Did you have any suspension lift before hand? you cut 6 spacers? also did you have to remove the sub frame tie by the transmission? do you have part number for the brake lines?

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Code Pathfinder
Posts: 133
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Location: Minnesota

Suspension lift

Postby Code Pathfinder » Wed Dec 25, 2019 9:05 pm

Before I installed this subframe lift, I was running a suspension lift.

3 inch strut spacer in the front

Freedom Off-Road tubular upper control arms

1.75 inch rancho coil spring spacer in the rear

AC Delco Heavy Duty springs for the R51 Pathfinder.

The brake lines are from performancelifts.com

Just search "Extended Front Brake Lines Nissan Frontier"

Those are the extended brake lines I am going to use. They fit just fine on the rear. There wasnt any difference between them or the old ones.

To drop the subframe, make sure you have a floor jack or two on hand. You'll loosen the 3 subframe bolts on each side then slowly lower the subframe to the ground.

You'll place your floor jack(s) under the rear differential to hold the subframe in place while you loosen the subframe bolts. Then lower the differential slowly down. The rear differential is mounted to the subframe so when you lower the differential, the subframe will follow suit.

BEFORE YOU LOWER THE SUBFRAME, REMOVE THE BRAKE CALIPERS FROM THE ROTORS. THE UPPER PORTION OF THE BRAKE LINES ARE ATTACHED TO THE MAIN FRAME AND WILL STRETCH IF YOU DONT REMOVE THE CALIPERS FROM THE ROTORS.

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Code Pathfinder
Posts: 133
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Location: Minnesota

Extended Brake Lines

Postby Code Pathfinder » Sat Jan 25, 2020 8:55 am

Extended Brake Lines are going in as we speak.

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Code Pathfinder
Posts: 133
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Location: Minnesota

Re: Sub-Frame Lift Kit Installed

Postby Code Pathfinder » Tue Sep 15, 2020 9:32 am

I had some freetime yesterday so I installed my 4 inch subframe blocks in the rear to raise the lift in the rear to 5.75 inches.

List of Parts Used for the lift:

2. 2x4 1/4 wall T6 6061 Aluminum rectangle tubing.

2. 2.5 inch diameter 4 inches long T6 6061 Aluminum solid round bar

4. M14x1.50 80mm bolts. These screw the rectangle tubing into the frame of the truck. They are the upper lift block bolts.

4. Grade 8 1/2 13 4 inch long bolts. These are the bolts that connect the sub frame to the lower part of the lift blocks.

2. Grade 8 1/2 13 7 inch long bolts. These are the bolts used for the round bar spacer that goes on the front part of the subframe.

6. Grade 8 1/2 13 Flange Locking Nuts

An assortment of 1/2 grade 8 washers

2. Extended brake lines. These were already installed on the truck.

Pictures:

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Drivers side:

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Passengers Side:

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Under the Truck View:

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Overall, id say its a medium to hard job to do. Definitely have multiple floor jacks and jack stands ready to help slowly lower the subframe to install the blocks.

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Code Pathfinder
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Location: Minnesota

Re: Sub-Frame Lift Kit Installed

Postby Code Pathfinder » Tue Sep 15, 2020 9:39 am

So after doing the lift I had noticed a vibration in the driveshaft in the rear.

Crawled under the truck to take a peek and noticed this:

Image

The yoke is not fully engaging the Transfer Case when driving around. Its not fully removed but its definitely something you want to get taken care off.

To fix this issue and the vibration, you have to order a driveshaft spacer from PRG.

Link to the spacer:

https://performancelifts.com/prg-nissan ... pacer.html

It does say its for the titan but it also works on the frontier, xterra, and pathfinder without any issues. Its the same pinion flange as ours. 4 bolt, 29 spline, M205/M226/R200 Rear Differential pinion flange spacer.

That has been ordered and hopefully will get to my place sometime this week or next week.

The front suspension lift kit is getting installed on the 28th. Stay tuned for what is to come next!

silverarrow27
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Location: Banning, CA

Re: Sub-Frame Lift Kit Installed

Postby silverarrow27 » Thu Sep 17, 2020 12:17 am

Man, I'd use loctite and RTV gasket maker on that spacer when installing.

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Code Pathfinder
Posts: 133
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Location: Minnesota

Re: Sub-Frame Lift Kit Installed

Postby Code Pathfinder » Fri Sep 18, 2020 7:14 am

silverarrow27 wrote:
Thu Sep 17, 2020 12:17 am
Man, I'd use loctite and RTV gasket maker on that spacer when installing.
On the Driveshaft spacer or the Sub frame Blocks?

The sub frame blocks do not budge at all period. Even when I am rounding tight corners. The wheels begin to articulate with the suspension before the blocks will ever try to shift. The sub frame blocks all utilize the strongest possible bolts and flange Lock Nuts on the market. Grade 8 1/2 bolts and Metric Grade 10.9 M14x1.50 bolts.

Gasket Maker would most likely make a bigger mess under the truck IMO but you could use it if you wanted to.

silverarrow27
Posts: 90
Joined: Sat May 02, 2020 1:40 am
Location: Banning, CA

Re: Sub-Frame Lift Kit Installed

Postby silverarrow27 » Fri Sep 18, 2020 3:50 pm

I was talking about that driveshaft spacer because that is going to see a lot of torque and spinning thousands of revolutions.

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Code Pathfinder
Posts: 133
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Location: Minnesota

Re: Sub-Frame Lift Kit Installed

Postby Code Pathfinder » Mon Sep 21, 2020 8:23 am

silverarrow27 wrote:
Fri Sep 18, 2020 3:50 pm
I was talking about that driveshaft spacer because that is going to see a lot of torque and spinning thousands of revolutions.
The new Driveshaft spacer will come with Grade 8 bolts and hardware. Most people who do this mod are Frontier and Titan owners since they can do a rear lift with blocks, leaf spring packs, and shackles.

Now that I am lifted this much in the rear though, I am joining the driveshaft spacer club.

Loctite is recommended but gasket maker is not because if you need to service your diff and the spacer wont come off, then you are in trouble.


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