G37 Sedan

Rusty Front Cross Beam (AWD)

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Old 08-17-2017, 10:40 PM
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monty2003
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Rusty Front Cross Beam (AWD)

Successfully completed a power steering rack replacement for my '09 G37XS. Part of that operation required the removal of the front cross beam. Mine was very rusty and upon removing the flakes I found two large holes! Chicago winters and salt are hard on a car but this garage kept car (home and work) rust surprised me. New parts are $600+. Car has $110k miles

Can;t seem to find a used part. I'm thinking of bringing it to a welder and having them do $50 worth of work to make it sound but not pretty, I've never gone junkyard picking. Have any of you had luck?

Anyone with similar issues?




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Brian
Old 08-18-2017, 12:44 AM
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guy from norcal
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In sacramento we have a few infiniti/nissan wrecking yards. They always post ads on craigslist and say they do shipping.
Thats some really bad rust,If it's possible i would buy a used one from a west coast or southern states.
Old 08-24-2017, 02:28 PM
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monty2003
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Decided to get it welded up. Went to a local place that charges $70/hour expecting it to be about an hours worth of work. They were backed up two weeks so I ended up paying $200 to get it done within two hours.






Installed it and both of the outer bolts on the ends of the cross bar are stripped. FSM says 63 ft-lbs and I set the torque wrench at 60. New thread will be started on that.

Brian
Old 08-24-2017, 02:35 PM
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monty2003
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Forgot that the torque reading in the FSM is NM and the second number in the bracket it Ft-lbs. the right torque was 46 ft lbs (63 NM) and I used 63 ft lbs.

Dumbass.

Brian
Old 08-26-2017, 09:47 AM
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transportchef
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That rust looks similar to some of the bolts underneath my car. I picked the wrong year to keep. What a rust bucket
Old 08-29-2017, 09:54 AM
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CAD
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Welding looks decent. I would have gotten the whole thing sandblasted and powdercoated black while it was out.
Old 08-31-2017, 08:40 AM
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monytx
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Originally Posted by CAD
Welding looks decent. I would have gotten the whole thing sandblasted and powdercoated black while it was out.
I was thinking the same thing. But that weld does look decent, try and apply some sort of protectant.

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Old 08-31-2017, 09:19 AM
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monty2003
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I cleaned it with lacquer thinner and then primed and pained it. On the RHS of the beam air conditioning condensation keeps the area wet which is why I think it rusted so quickly. Not my best work but I needed to drive it!

Have a rust bubble forming on the body at the seam where the rear quarter meets the part of the bumper that wraps around right behind the rear wheel. If only I didn't live in an area that needed to use salt in the winter. At 110k miles and would like to get to 150K without a big nasty cancerous hole in the body.
Brian
Old 08-31-2017, 12:01 PM
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IAG37
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I have the same cross beam rust issue. It really seems to be the first thing that starts to rust on the underbody.
My plan was to replace it with a megan H-brace when it starts looking really bad. Can anyone chime in on if it installs over the cross beam or is it a replacement?
Old 09-01-2017, 12:01 PM
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Quiver
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I also have the same issue. Although mine has only rusted on the passenger side so far. I have a '09 g37x with 82,000 miles.
Old 09-03-2017, 01:00 PM
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IAG37
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Alright so after doing some research it looks like I gotta 86 the Megan H-brace idea. Their brace and similar braces like Soul Function D-brace are only designed for the RWD model. I plan on doing something similar to OP, probably getting a wrecking yard brace in good condition and powdercoating it.
Old 07-24-2018, 05:14 PM
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waynerd313
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I just acquired a G37X and also have this problem. How hard is it to remove this particular cross member?
Old 07-25-2018, 08:58 AM
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Baadnewsburr
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Originally Posted by waynerd313
I just acquired a G37X and also have this problem. How hard is it to remove this particular cross member?
Its not. It comes off with just a few bolts...I don't recall anything obstructing it...just pop it off, use some rust stabilizer/converter, prime and paint...
Old 09-23-2018, 09:33 PM
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flipmode007
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Oh man now when I go to the scrap I will be looking for a better one and also you guys need to check the differential cover mine is rusting fml
Old 09-26-2018, 07:13 AM
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Hotsauce55
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I assume you never had the car oil sprayed? I’m in the midst of getting a 2013 and here in Ontario the salt is nasty. First thing I’ll do is polish up paint, wax, clear bra then oil spray. Every car I have done that to has remained in excellent condition.
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