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undercarriage color


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i have some good stock images of the undercarriage but can someone confirm the color type they use. It looks to me like a gloss black but i could be wrong

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well i feel stupid now. I didnt realize that. All images i was looking at seemed to have bottom of floor pans and everything black

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  • 1 month later...

Hi Wally,

Color and type of finish depends on the year.  My two 240z's had a black coating applied at the factory  What model and year are you working with?

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9 hours ago, inline6 said:

My two 240z's had a black coating applied at the factory 

I don't think so if i may say.. the following statement seems more correct to me..

On 6/15/2021 at 2:07 AM, Patcon said:

Some dealers added undercoater.

 

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On 7/30/2021 at 5:40 AM, dutchzcarguy said:

I don't think so if i may say.. the following statement seems more correct to me..

 

 

Have a look at this thread.  Both my 12/70 and 6/71 cars had this tough, black coating applied to the bare metal before the bodies were sprayed with color.

 

 

Additionally, if you look very close at the pic showing the transmission tunnel in that thread, you will see a reddish over spray that came through the shifter opening onto the black coating.  That overspray... is the first coat of primer that was applied at the factory.  You can see it here on the fender I stripped back to bare metal:

IMG_20181104_193121.jpg

 

Over this red "oxide" primer, which was sprayed over the entire top surface of the car, they sprayed a coat of grey primer before the paint:

IMG_20181111_145515.jpg

 

Note that this picture is of the front wheel well area where the cowl drain hose passes from the inside of the passenger compartment of the car to the outside - left hand side of the car.  We are looking at the place where the fender support panel bolts to the unibody.  To the left of where the support was bolted, you can see a "black" coating in the picture.  To the right of where the support was bolted, you see no black coating.  The support panel also had the black coating on it.  

IMG_20181111_145433.jpg

 

The same is true for the front fender.  The black coating is only on the inside of the fender, in front of where the support panel contacts the back of the fender.    

Those last facts are a bit off point, but circling back the thread for which I provided a link, you can clearly see the silver is on top of the black, and the black is on top of bare metal.   All of this is what I provide as facts that the black coating was applied at the Nissan factory.  I also have chips of the black coating which flaked off in some places.  And I have sanded it in various places.  So, I know it is the same stuff all over the car.  No other black substance was sprayed on this car (6/71) after the original silver paint. 

Edited by inline6
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14 hours ago, inline6 said:

Have a look at this thread.

Sorry but i'm not gonna read it all.. is your car a first owner car.. are you the first owner? if not you can't know where the car has been and there are always exceptions.. (Like the cars with total different serialnumbers but same month and year dates.. the factory sometimes did put cars aside and later on after "repair" they came back in the proces line..)

It's possible that your cars had some extra black stuff but this does not mean they all got it.. 

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I am the first owner of a 280Z.  Mine has black coating (looks like truck bed liner).  In some places it is still firmly attached; in others it could be peeled off.  Underneath it was not exactly body color, but more like a primer.  I had assumed that it was factory applied.  I would not have thought that a dealer in Houston had applied it, or they would have padded the sticker price.  There is no paint on top of the black coating.

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7 hours ago, dutchzcarguy said:

It's possible that your cars had some extra black stuff but this does not mean they all got it.. 

Agree totally. 

With regard to my car (two cars actually), I think my investigation and my conclusions about the origin of the black coating being at the Nissan factory are accurate.  Evidence is there if you take the time to look. 

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2 hours ago, Roberts280Z said:

I am the first owner of a 280Z.  Mine has black coating (looks like truck bed liner).  In some places it is still firmly attached; in others it could be peeled off.  Underneath it was not exactly body color, but more like a primer.  I had assumed that it was factory applied.  I would not have thought that a dealer in Houston had applied it, or they would have padded the sticker price.  There is no paint on top of the black coating.

I am not familiar with the 280z undercoat.  I have seen some evidence that the factory coating changed near 72-73 to a much rougher texture.  If you look through some of the cars on Bring a trailer, you can get an idea of what is original and what is not.

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Unfortunately, I have destroyed the evidence:

image.png

The original coating did NOT extend to the tops of the upper frame rails.  Also note that the inside of the fenders was also coated.  My guess is that the coating was factory-applied, with the fenders attached, before the suspension and fender liners were installed

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I was under mine replacing some fuel lines in the rear today (with the fuel tank out).  HLS30-08215 has body color (paint only) on the under side at least in the rear where the fuel tank goes.

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6 hours ago, texasz said:

I was under mine replacing some fuel lines in the rear today (with the fuel tank out).  HLS30-08215 has body color (paint only) on the under side at least in the rear where the fuel tank goes.

Have any pics?  Lots of factory overspray in that area on mine. Interestingly, they used tape of some sort over the holes in the rail for the rear suspension hangers to keep the threads from being coated with the black "undercoat".

IMG_20200426_163710.jpg

Edited by inline6
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10 hours ago, Roberts280Z said:

Unfortunately, I have destroyed the evidence:

image.png

The original coating did NOT extend to the tops of the upper frame rails.  Also note that the inside of the fenders was also coated.  My guess is that the coating was factory-applied, with the fenders attached, before the suspension and fender liners were installed

I think it likely that it was applied with the fenders attached and before the suspension and fender liners were installed.  That would be the same treatment my car received from the factory, judging by where the coating was and was not upon inspection at dis-assembly.   With regard to color, my factory coating has a semi-gloss appearance.  Paint overspray covers a whole bunch of it though.

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  • 2 weeks later...

We were installing the fuel tank this morning and I noticed some stuff peeling off of the under side of the car in the VERY rear.  While most of the under side does have body paint this area seems to have some kind of coating over the orange paint and that is what is flaking off.  See pix.  The fuel tank is back in the car now so I no longer have access to this area, hope these pix help.

 

20210815_090922.jpg

 

20210815_091022.jpg

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thanks. i ended up doing i deep clean on everything underneath. There was basically no rust on the car anyway when i got it (that was the selling point to me). I bought about 6-7 cans of good black Rustoleum undercoating. i sprayed everything down good. So now its all protected really good. I am fairly certain i could go 

back over it with 918 orange if i wanted but i am not going to. i think it looks good black. 

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