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?




Pictures



Brian

 

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.

 

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

 

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

 

That rust looks similar to some of the bolts underneath my car. I picked the wrong year to keep. What a rust bucket

 

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.

 

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

 

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?

 

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.

 

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.

 

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...

 

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