Page 1 of 2 12 LastLast

Thread: AC 4x4 Rear Shackles

  1. #1
    Join Date
    Jul 2007
    Location
    Wp-GHC-WA-USA
    Posts
    1,364

    Default 2005 Nissan Frontier Project

    Going to do the shackle lift on the rear like so many here.

    My question is, do I NEED the polyurethane bushings the offer for the lift? If not, what is the benefit of adding them?


    FWIW, I have an '05 Nissan Frontier Crew Cab 4x4.
    Last edited by CoastalDefender; 07-21-2007 at 05:25 AM. Reason: Thread content expanded past original question

  2. #2
    Join Date
    Jul 2005
    Location
    San Antonio, TX
    Posts
    1,819
    My first reaction would be yes. Also make sure they're the correct width before you start tearing everything down. I didn't a few years ago and had to use an angle grinder to make 'em fit. Dumb but it worked. Only need a fraction to get them to swing freely.

    Also welcome to ExPo! Where do ya hail from?
    Peace and Mud,
    Patrick, Cyndi, Genavieve, & Rhyse
    www.nissanoffroad.net

  3. #3
    Join Date
    Jul 2005
    Location
    Chandler, Arizona
    Posts
    2,410
    Quote Originally Posted by CoastalDefender
    FWIW, I have an '05 Nissan Frontier Crew Cab 4x4.
    Actually the bushings from AC are not necessary. You re-use the OEM bushings. I presume they sell them in case you (somehow) damage the existing bushings, or feel better by replacing them. But you could also get the bushings from a local Nissan dealer, too.

    Having dealt with both the AC shackles and the AC add-a-leaf for the same truck, it's my opinion that you are better off with the AAL.

    PRG sells a really nice shackle, too. As far as shackles are concerned, PRG makes a better one - several mounting positions to vary your lift and a superior center support. I don't think it's on his website yet, so you'd have to call. He put up some photos here.

    Hope it helps,
    Mark
    Mark Stephens
    AdventureParents.com

    Get a bicycle. You will not regret it. If you live.
    -- Mark Twain, Taming the Bicycle

  4. #4
    Join Date
    Jul 2007
    Location
    Wp-GHC-WA-USA
    Posts
    1,364
    Quote Originally Posted by The BN Guy
    Also welcome to ExPo! Where do ya hail from?
    Washington State. Grays Harbor to be exact. I have the ocean 300ft off my front porch.

    How does AC's shackles hold up to the weather? Rust is a HUGE concern being so close to the ocean.
    Last edited by CoastalDefender; 07-11-2007 at 03:44 AM.

  5. #5
    Join Date
    Jul 2007
    Location
    Wp-GHC-WA-USA
    Posts
    1,364
    Quote Originally Posted by articulate
    Actually the bushings from AC are not necessary. You re-use the OEM bushings. I presume they sell them in case you (somehow) damage the existing bushings, or feel better by replacing them. But you could also get the bushings from a local Nissan dealer, too.

    Having dealt with both the AC shackles and the AC add-a-leaf for the same truck, it's my opinion that you are better off with the AAL.

    PRG sells a really nice shackle, too. As far as shackles are concerned, PRG makes a better one - several mounting positions to vary your lift and a superior center support. I don't think it's on his website yet, so you'd have to call. He put up some photos here.

    Hope it helps,
    Mark
    I can't see bushings being worth that much extra (~$60?), so I could just go with the OEMs.

    So you replaced your shackles with the AAL? How does the ride differ with the AAL in back? Any chance in heck the AAL pack will make a substantial difference in weight capacity? (without risking damage to the drivetrain). And do I need separate U-Bolts to add the pack? Which ones do I get?

    I know these are a lot of questions, but I'm genuinely interested in your conclusions on some of the things you've done.

    Thanks!
    CD
    Last edited by CoastalDefender; 07-11-2007 at 04:32 AM.

  6. #6
    Join Date
    Jul 2007
    Location
    Wp-GHC-WA-USA
    Posts
    1,364
    Quote Originally Posted by articulate
    Having dealt with both the AC shackles and the AC add-a-leaf for the same truck, it's my opinion that you are better off with the AAL.
    That's the standard on that AC has for $165, right?

    http://www.4x4parts.com/public_html/...427bf254721473

  7. #7
    Join Date
    Jul 2005
    Location
    Chandler, Arizona
    Posts
    2,410
    No worries about the questions - it's rare that I actually have more answers than questions. I recently did a bunch of research about shackles, though, so it's all fresh in my brain.

    This page has some great information regarding shackles. My abbreviated version is this: shackles change the geometry of the rear suspension and tend to flatten an OEM spring pack in a spring-over-axle set up, thanks to leverage. They work best with an after-market spring pack that is slightly longer than the OEM pack. In general, though, an AAL is going to be a better improvement than a longer shackle.

    See my attached images.

    You can see how my original leaf packs are slightly inverted, or bending downward. This is also without a load in the rear. Incredible, huh? This is the result of those longer shackles.

    I am installing that AAL I mentioned (same one in your link) and will test it in conjunction with the longer shackle, as we've got the Eezi-Awn mounted all the time and a custom bed cap (more weight than the average truck). According to Automotive Customizers, their AAL improves the load capacity, but that was from a person over the phone who had to ask someone else. I think that information is fishy; no mention of how much, but they probably just mean that the spring packs won't compress as much with the same load. We'll see how it works out.



    Longer u-bolts, yes. They ought to sell them with the packs, but you should also be able to get them from auto parts stores, a spring shop, off road supply, or perhaps a specialty hardware store. U-bolts aren't that difficult to find. Obviously, they just need to be the same width and then you trim off extra length after the installation is complete.


    I suggest, though, getting this stuff through PRG. Just an opinion.

    Edit: I cut the tailpipe, too, in order to make space for the longer shackle to swing backwards. I don't know if that was totally necessary.
    Mark Stephens
    AdventureParents.com

    Get a bicycle. You will not regret it. If you live.
    -- Mark Twain, Taming the Bicycle

  8. #8
    Join Date
    Jul 2007
    Location
    Wp-GHC-WA-USA
    Posts
    1,364
    Quote Originally Posted by articulate
    No worries about the questions - it's rare that I actually have more answers than questions. I recently did a bunch of research about shackles, though, so it's all fresh in my brain.

    This page has some great information regarding shackles. My abbreviated version is this: shackles change the geometry of the rear suspension and tend to flatten an OEM spring pack in a spring-over-axle set up, thanks to leverage. They work best with an after-market spring pack that is slightly longer than the OEM pack. In general, though, an AAL is going to be a better improvement than a longer shackle.

    See my attached images.

    You can see how my original leaf packs are slightly inverted, or bending downward. This is also without a load in the rear. Incredible, huh? This is the result of those longer shackles.

    I am installing that AAL I mentioned (same one in your link) and will test it in conjunction with the longer shackle, as we've got the Eezi-Awn mounted all the time and a custom bed cap (more weight than the average truck). According to Automotive Customizers, their AAL improves the load capacity, but that was from a person over the phone who had to ask someone else. I think that information is fishy; no mention of how much, but they probably just mean that the spring packs won't compress as much with the same load. We'll see how it works out.



    Longer u-bolts, yes. They ought to sell them with the packs, but you should also be able to get them from auto parts stores, a spring shop, off road supply, or perhaps a specialty hardware store. U-bolts aren't that difficult to find. Obviously, they just need to be the same width and then you trim off extra length after the installation is complete.


    I suggest, though, getting this stuff through PRG. Just an opinion.

    Edit: I cut the tailpipe, too, in order to make space for the longer shackle to swing backwards. I don't know if that was totally necessary.
    Thanks for the links and info.

    And you're right, those stock springs are almost unbelievable!

    Are '01-'04 Frontier springs the same width as the '05+ years? Think I could just get U-bolts for that model?

    And does PRG carry all this stuff, I am not seeing any of it on their site.


    FWIW, I'm a complete noob when it comes to this stuff. Learning as I go.

  9. #9
    Join Date
    Jul 2007
    Location
    Wp-GHC-WA-USA
    Posts
    1,364
    Did you have to do any front end realignment after installing the PRG spacers? And did you upgrade from the PRG's to something else (comparable price, but better for the setup)?

  10. #10
    Join Date
    Jul 2007
    Location
    Wp-GHC-WA-USA
    Posts
    1,364
    Quote Originally Posted by articulate
    See my attached images.

    You can see how my original leaf packs are slightly inverted, or bending downward. This is also without a load in the rear. Incredible, huh? This is the result of those longer shackles.
    I had my truck looked at by a local Tire Shop out here (Les Schwab is local I think?), checking out the brakes before our road-trip to Disneyland in Aug. All is well with the brakes.

    Since we had her jacked and the wheels off, I took a look at the rear springs. Same inverted-stance as in your pics, so this must be a Nissan thing? Or they just under-engineered the springs?

    Regardless, I ordered the springs from AC, and I just received in the mail today the PRG front spacers.

    So after I get the springs, I am going to get them all installed by a local 4x4 joint that does all the Logging Rigs in the area (they have a lot of experience in lifts).

    Figure I'll let them do it and watch, so I don't fugger it up.

    Thinking 33" Open Country Mud Terrain tires on the stock wheels aftewards. Only $1100 for 4.

    that will give me a 2" in front, and a 3" in back. After I add the Shrockworks bumper, it will be a 1.5"/3". So I may end up re-doing the front with a 3", so I end up with a 2.5"/3". Really don't like that pre-runner/2WD look.
    Last edited by CoastalDefender; 07-17-2007 at 02:54 AM.

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •