Iron Pig Off Road (IPOR) Skid Install - New Design

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HI,
I could not find torque values for the two nuts transmission damper. So I torqued them to 60nm.
This morning I noticed some high frequency buzz in the cabin. If I put my hand on the low gear, the frequency of the buzz is the same.

1. Has any of you how installed the IPOR noticed a buzz coming into the cabin?
2. If the damper nut is tightened, what torque value should I use?

As on observation, I can not see how the IPOR is different from the stock cross member as far as introducing a buzz. Both are bolted to the frame and connect to the car via the damper.

So my hope is that I over tighten the damper nuts...
 
I would check and see if anything is touching/rubbing/interfering with the transmission or transfer case. The transfer case vibrates and torques a lot and tend to produce buzzing noises.
 
The FSM lists the torque spec as 74Nm or 54ftlbs under "engine rear mounting x crossmember".

The "torques a lot" comment was to say that the transfer case twists/moves/vibrates/torques under load, and this movement is, A: normal, and B: known to produce buzzing sounds when things are in contact with it.
 
Ok Found it. So for completeness any one that install the IPOR skid plate please note the following:

1. When I asked Lance for torque values he said "what ever the factory says" with this information we go to the FSM.
2. The FSM section is "Automatic Transmission Unit"
3. The file name is the comp.pdf. There you will find the following values:

Look for "Crossmember with Transfer Under Cover"
The 8 bolts torque values are: 61(n.M) or 45(ft.lbf)
The two nuts for the damper are 74(n.M) or 54 (ft.lbf)

Hope this helps
 
I also found it in the Torque Specifications page of the AT section. It is a list of every torque spec used in the chapter. Each chapter has one and it makes finding all the specs really easy. Glad you got it worked out. How is the buzzing? Better/worse/gone?
 
Not to confuse the issue, but I'm assuming that your specs are from the '96 FSM and for your '96. My '94 FSM calls out the same (45 ft.lbf,) for the crossmember bolts. But, quite different for the trans damper nuts (43 ft. lbf.). Must be that they're different trannys.

I'd also recommend that you check torque on all bolts and nuts after 500 miles or so. I guess my OCD is showing a bit, but in doing this, it revealed 4 out of 8 of the bolts had loosened slightly. The tranny nuts remained tight. I did this on both ends of a 400 mile round trip pavement excursion. Second torque check - all were tight.
 
80toylc,
I have LX450 and I am using the "1996 Lexus LX450 Repair Manual".
I don't know anything about the Toyota Land Cruisers never drove one, never had one. :-)

As indicated in a previous post, I was unable to torque all the 8 bolts to factory specification.
Some were torqued to 60 but some just deformed the washers supplied and I never got the "click" so I stopped.
I am working with Lance to correct the situation and I have no doubt it is going to be resolved to my satisfaction. Lance has been nothing but outstanding to work with.

Adam,
Tonight I am going the torque it to 74nm and will take it from there.
 
I had the same washer problem on my truck. It was from having the bolt right on the edge of the hole so the washer had to support the head of the bolt over the slot.

I'm away on business right now but will check my other truck's hardware tp make sure my previous post on the subject is correct.
 
got my IPOR skid the other day, and I am definetly impressed, it is well made, I as well was going to build one from scratch and it would of worked for sure, but it would not of been this nice. However....

I am PISSED that it got all scratched up in shipping, you guys should really do a better job packaging it when you ship it.

















:) gotcha, totally fing kidding....

Noah
 
flange bolt hardware - optional hardware

For those people that want to use JIS flange bolts for installing the IPOR skid plate.

First IPOR sent me thick washer to replace the original thin ones. I found the new washers to be great.

You will need 8 JIS bolts M10x1.25x40:
M10 is size
1.25 is pitch
40 is 40mm or the length.
You want them to be fully threaded

You will also need JIS M8x1.25x35

You can find 8 here:
M10 X 1.25 X 40 JIS Flange Bolts Qty (1) [MJISFB1040M109] - $1.25 : NutsandBolts.com
tell them you need a fully threaded bolt.

And here:

M8 X 1.25 X 35 JIS Flange Bolts Qty (1) [MJISFB835C109] - $0.75 : NutsandBolts.com

I installed mine without the lock washers, like the OEM.
IMG_0257.webp
IMG_0258.webp
IMG_0262.webp
 
Just got my skid, psyched to install and test at Cruise Moab 2010!
 
Too funny, my IPOR skid was leaning against my desk this morning...dropped by the local ACE and found that they carry the right JIS flange bolts. Just need to sort out thicker fender washers. Thanks for the specs above!
 
Here is the new hardware you asked for! We are now including the Gr 10.9 JIS flange bolts and larger/thicker washers with every kit.. for all current kits they will be shipped with the new hardware, for existing customers we will supply the larger washers upon request. If you want the JIS bolts with the washers they will run $15 shipped if you purchased the skid within the last 60 days, or $20 for all orders older than 60 days. For a comparison between the old and new style washers here is a side by side shot:
washercomparo.webp
 
i guess i don't really understand all the problems with the older hardware?? Mine has held up just fine and i haven't heard of anyone breaking any bolts.
 
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