Boot Hinges - Broken

[wixer]

So, this is an annoyance, came to put my bag into the boot after finishing work this afternoon & the boot lid clipped the edge of the rear fender. When I arrived home I investigated further. Initial looks suggested a stiff joint, which I thought was odd but..... after a couple more lifts & lowering of the lid the lid was getting more & more out of alignment. Then I noticed a crack in the paint on the LH hinge. Looking closer & raising the lid a couple more times, the split got worse until I'm now stuck with the lid partly raised as I think if I try & move it again, the metal will snap.

So a couple of questions,

Has anyone seen this before ?

Has anyone got a second hand set of boot hinges, preferably in red ?

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This is the RH hinge, which has signs of the paint cracking, so probably also on it's way to failure.
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[Kaz-kzukNA1]

Not so common as the main relay failure but unfortunately, already enough issue reported.

And indeed, some experienced with snapped hinge.

On many NSX, you will notice that the forward section of the boot lid where the hinge sits doesn't align well against the rear wing.

Mine is doing this and when the boot lid is closed, the right forward section is kind of slightly lifted against the top surface of the rear right wing.

Must be the metal fatigue so one day, would love to replace it but the new one is only primed and not colour coded.

Kaz

[NZNick]

Is it metal fatigue in the hinge, or the boot lid itself? - i can’t tell from the pictures.
The hinges aren’t too expensive, but the boot lid is into 4 digits…
Could a contributing factor to the cause be the gas struts failing at different rates causing a twisting motion?

[wixer]

It's the LH hinge that has fatigued & if I move the lid again, I think it will finally snap. The RH hinge has signs of fatiguing, as there is a crack in the paint.

[Old guy]

This made me go out and look at the hinges on my 2000. On my right hinge, there is no crack in the hinge metal; but, a small piece of the paint had flaked off at the exact spot where wixer experienced the crack in the hinge. It is not uncommon for surface coatings to spall when the underlaying structure is being strained under stress. Makes me wonder if I should purchase a new hinge and a can of custom mix paint to match it up.

Has anybody attempted a repair of the cracked hinge? Looks like a rather fiddly area to do a repair.

[wixer]

Managed to buy some secondhand hinges off Ebay for £70, not ideal but I didn't want the car off the road, while I waited for new hinges from Amayama & getting them painted, will do this over the winter, as this year might be the year I actually get the car painted a single shade of red ;)

The hinges, as you can see are the dark purple colour Midnight Pearl and weirdly, don't really look out of place on a red car.
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This is the broken LH hinge, I may see if I can get it repaired & possibly re-inforced with a small piece of aluminium welded to both sides of the fracture.
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[Old guy]

This is the broken LH hinge, I may see if I can get it repaired & possibly re-inforced with a small piece of aluminium welded to both sides of the fracture.
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When I went out to look at my hinges, I did the magnet test. The hinges on my car are definitely steel which is why I was wondering whether anybody had attempted a repair.

[wixer]

When I went out to look at my hinges, I did the magnet test. The hinges on my car are definitely steel which is why I was wondering whether anybody had attempted a repair.

I assumed they were aluminium without thinking about it but they are steel, which will make a repair an easier thing to do. Pity I gave my MIG welder away.....

[NSXGB]

Just had a peek at mine which seem all good.
I'm assuming some preventative maintenance would be to lube the hinges with some oil.
Just did mine anyway, embarrassingly the first time in 19 years of ownership!

[The King]

Just had a peek at mine which seem all good.
I'm assuming some preventative maintenance would be to lube the hinges with some oil.
Just did mine anyway, embarrassingly the first time in 19 years of ownership!

I'm going to do mine right now!

[Nick Graves]

Just had a peek at mine which seem all good.
I'm assuming some preventative maintenance would be to lube the hinges with some oil.
Just did mine anyway, embarrassingly the first time in 19 years of ownership!

I went a bit mad with white lithium grease when I got mine.

But that was over a decade ago!

Similarly with the silicone & rubber lubricant for the seals.

This sort of stuff used to appear in (now vintage) car handbooks. Who now lubricates their door hinges & retaining straps, etc?