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Thread: Adjustable Panhard Rods

  1. #1
    Join Date
    May 2010
    Location
    Mullaloo, Western Australia
    Posts
    1,076

    Adjustable Panhard Rods

    Since installing the HRA 2" lift kit and Arnott Gen 111 bags I have been getting tyre rub with the 265/75/16's at maximum articulation on the chassis rail on the RHS rear due to the axle no longer being centred under the car. Thanks to others on the forum who have pinned it down to the Panhard rod that that needs lengthening when the vehicle is lifted. I am estimating approximately 10 mm is all that is needed. and so began the project.

    Step 1. Source a second set of Panhard rods for modifying. These were sourced for $22 each from Linn Rover in Perth.

    Step 2. Source adjusters. These were sourced from Technico Automotive Components in Melbourne. Cost for these to be custom made was $65 ea + $14 P&H. The bosses were bored to 30.05 mm and have 3/4" threads for the adjustment. The great thing about these adjusters is that the adjustment can be made with the Panhard rod attached to the car.

    If anyone else is interested, Andrew at Technico Automotive Components has suggested a cheaper price is available for a group buy

    Step 3. Get them professionally welded. I have very basic welding skills with my ark welder, so for this vital part of the vehicle I elected not to do this job myself. I made contact with Mike at XLR8 Fabrication. The cost for cutting of the panhard rods, pressing on the bosses (they needed a bit of encouragement), then plug weld and circumferential weld the 4 bosses cost me a slab of Cougars (the drink not the women) at $70.
    Panhard Rods welded.jpg

    Step 4. Get them painted in a rust proof paint

    Step 5. Fit them on the car, adjust to cenralise the axle

    Step 6. Get out and have some fun

    So far I'm up to getting them painted when I get home this afternoon. I'll allow a couple of days for the pant to dry so all going well I should get them fitted over the weekend or Monday at the latest .

    Total cost $258 for 2 adjustable Panhard rods

    Gary

  2. #2
    Join Date
    Feb 2012
    Location
    Carnegie
    Posts
    1,227
    Jolly good work. Top job. Get those wheels centred - but in which height position? The quandary. I'd favour in the highway height (former standard height'ish with lift). Then get an alignment.

  3. #3
    Join Date
    May 2010
    Location
    Mullaloo, Western Australia
    Posts
    1,076
    Quote Originally Posted by davidsonsm View Post
    Jolly good work. Top job. Get those wheels centred - but in which height position? The quandary. I'd favour in the highway height (former standard height'ish with lift). Then get an alignment.

    I was thinking half way between highway and standard as a compromise. Either way it's still going to be much loser to central than it currently sits, even at highway height.

    Gary

  4. #4
    Join Date
    Jan 2011
    Location
    melbourne
    Posts
    108
    That looks great! Gary, I agree somewhere between highway and standard heights, as the diff really starts to step out in standard height.. did you need to tell them the measurements of where to cut the rod or did you just give them the instructions supplied with the adjusters. .
    Cheers
    Sam

  5. #5
    Join Date
    May 2010
    Location
    Mullaloo, Western Australia
    Posts
    1,076
    Quote Originally Posted by DANMAL View Post
    That looks great! Gary, I agree somewhere between highway and standard heights, as the diff really starts to step out in standard height.. did you need to tell them the measurements of where to cut the rod or did you just give them the instructions supplied with the adjusters. .
    Cheers
    Sam

    Sam
    I had already done the first cut on each of the rods to determine the internal diameter of the rods, XLR8 cut the 102mm from one half of the rods for both front and rear. So much easier with a drop saw with a metal cutting blade than me with a hack saw . The instructions were just for how I wanted them welded, as the dimensions on the p38 adjusters are different to the instructions. The end of the Panhard rod on mine goes into the boss 30mm before it is seated. Then allow 102 mm for the remainder of the boss plus the adjusting nuts at their minimum setting. Effectively the rods when in their minimum length are equivalent in length to the originals.

    Gary

  6. #6
    Join Date
    Jan 2011
    Location
    melbourne
    Posts
    108
    Cool thanks for that, interested in seeing how it goes as I think, it seems only you and I are the only p38s with that rear right rubbing problem hahaha.. ill upload some photos I took the other day showing the limited flex on the right rear..
    Sam

  7. #7
    Join Date
    Jan 2011
    Location
    melbourne
    Posts
    108
    Ok just realized I took pic from wrong sidebut clearly other side has much more travel with still 2" before hits bumpstop
    Attached Images Attached Images

  8. #8
    Join Date
    Feb 2010
    Location
    Truganina ( Hoppers Xing )
    Posts
    555
    Been thinking about this since I fitted my Hard Range 2" lift & Gen III bags!
    However my thoughts are along the lines of - why not just extend the original panhard rod mounts by extra 2"?? That compensates for 2" spacers!

    Yet to get under & measure up everything, maybe you guys already looked at this option and decided to go down path of adjustable panhards.
    Interested to hear any other thoughts on this!

  9. #9
    Join Date
    Feb 2010
    Location
    Townsville, QLD
    Posts
    2,456
    By lengthening the Panhard you increase the arc in which it sweeps, thus minimising potential return scrubbing issues. If the rod was simply moved across you could potentially move the scrubbing issue to the other tyre on that particular axle.

  10. #10
    Join Date
    Feb 2012
    Location
    Carnegie
    Posts
    1,227
    Yeah that, plus it's not straightforward. The existing chassis brackets are a little more complicated than you'd imagine they should be.

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