Jump to content
DeesZ

Media Blasting Resurrection of the Horns

Recommended Posts

Poindexter, thanks for the air horn pictures! They should wake up the neighborhood!

Mike B, I'll look forward to the horn pictures!

rtaylor and Arne, thanks for the input on this. If you ever get around that area with the camera, snap a picture or two. (I know it's not the easiest shot to get!)

So, thus far there are at two paint schemes; flat black and dark olive-drab. I wonder, perhaps different manufacturers or lot numbers?

Just wondering, does the paint on these cover everything front and back? I guess I'm asking 'do they look as if they were painted after assembly, or are the nuts & bolts bare metal as if installed after the painting was done?'

Share this post


Link to post
Share on other sites

Here are pictures of the original horns from my 1972 240z (manufactured 5/72). The fronts of the horns look like a semi gloss black. I think the rest is zinc plated and the bolts are cad plated. They are stamped H and L on the bottom front for High and Low. The 6/74 USA and Canada parts catalog shows the same part numbers are used up to 7/73.

The horns in HLS30-00032 are not black. They have blue overspray from a repaint, but it looks like they could have been the olive color originally. I'll see if I can clean them up some and take some pictures sometime this week.

-Mike

post-9102-14150804572064_thumb.jpg

post-9102-14150804572723_thumb.jpg

post-9102-14150804573299_thumb.jpg

post-9102-14150804573876_thumb.jpg

post-9102-1415080457435_thumb.jpg

post-9102-14150804574895_thumb.jpg

post-9102-14150804575318_thumb.jpg

post-9102-14150804575753_thumb.jpg

post-9102-14150804576201_thumb.jpg

post-9102-14150804576631_thumb.jpg

Share this post


Link to post
Share on other sites

dammit, I HATE it when I have to buy new tools!!!! You got me thinking a blast cabinet will fit really nice next to my toolbox.....now I just gotta find a way to pay for it. Let's see, 100 gallons of heating oil or a bead blaster? such hard decisions........

Great job on the parts, DeesZ! I may have a handful of stuff to send your way as well, if you're interested.

Share this post


Link to post
Share on other sites

Mike B - Thanks for the horn pictures! That tells me some important things about the way they were finished off for the 05/72 mfg. date (mine is an 05/72 as well!) Now I'd like to see some of the olive-drab ones with dates as well!

trykflyr - It may be a cold winter for you (with the fuel oil trade off).... If you have a compressor, you're half way there! And yes, I'd be interested in doing some blasting.

I found some real ratty stuff that I'll post before & after pictures of as soon as I can find the time to do them up. Time has been at a premium for me.... just got done helping my boy with his homework - he's a special needs guy who has been mainstreamed for science and a few other things at my request.... first year of high school and the demands on him are considerably more than what they had been up to this point, so I'm doing all that I can to help him get some study habits, etc..... challenging and time consuming, but priority-one.

Share this post


Link to post
Share on other sites
Now I'd like to see some of the olive-drab ones with dates as well!

Me too. How about it rtaylor or Arne?

-Mike

Share this post


Link to post
Share on other sites
Me too. How about it rtaylor or Arne?

-Mike

OK, I was wrong. I went out and looked, my 7/71 car has the black horns as pictured above by Mike B. The dark olive horns must have been on one of the two cars I parted, either 10/70 or 4/71. I'll look through my notes and pictures to see if I can figure out which.

Share this post


Link to post
Share on other sites

I'll take a picture tomorrow night, I won't get home until late this evening. It may be hard to see the olive color, what with it being such a dark shade, but I'll try. My horns are in the car. Come to think of it, I have to look in my home computer, but I may have a picture of the horns on my work benchwhen I took them out for cleaning.

Edited by rtaylor

Share this post


Link to post
Share on other sites
.....I'm still looking for a ratty slave cylinder that I replaced on my '71, but it just won't surface... can't believe that I pitched it, pack rat that I am... I want to show some good before & after results... I found a really ratty looking 280Z brake master that I'll get to soon...

Well, I found the brake master that was turning into a cake of rust.... also found a 240Z master that cried for attention.... and lots of other stuff to experiment with. Here are several before & after pictures that I promised to post. I find the results quite pleasing to the eye.

Comments and/or suggestions are welcome. I'd like to learn more, so feel free. I'm considering making a service available, so comments about that are welcome as well. Thanks, all!

Attachments:

Here are two of the junk master cylinder before cleaning:

post-9676-14150804643618_thumb.jpg

...and two after a refreshing:

post-9676-1415080464463_thumb.jpg

Another one that was on the 'to be saved for later' shelf....

before:

post-9676-14150804645648_thumb.jpg

..after....

post-9676-14150804646617_thumb.jpg

post-9676-14150804647115_thumb.jpg

post-9676-14150804642944_thumb.jpg

post-9676-14150804644232_thumb.jpg

post-9676-14150804645007_thumb.jpg

post-9676-14150804646105_thumb.jpg

Share this post


Link to post
Share on other sites

John. I looked at my old picture that I took when I pulled the horns and tried to get an color accurate photo last evening. The dark olive drab comes out black in the picture so it does no good to post it, sorry.

The color is similar or identical to the dust cover on my front axel.

Share this post


Link to post
Share on other sites

I finally got my own blast cabinet set up today and started blasting a few things. It is addictive. I started blasting the overspray off the horns from HLS30-00032 and then I remembered this old thread about the color of the horns. Once I got the overspray off, I could see that the horns from #32 were originally the olive color that others described. I took one of the horns apart to get a better view of the original paint and some comparison pictures next to the black horns from my 5/72. I think they were originally the darker olive color that you can see on outer edge of the center section and the back of the disassembled horn. The silver color in the middle section is the bare metal where the paint was completely removed. The horns from my 5/72 are definitely original and they are black, not olive.

-Mike

post-9102-14150807188827_thumb.jpg

post-9102-14150807189349_thumb.jpg

post-9102-14150807189775_thumb.jpg

post-9102-14150807190198_thumb.jpg

post-9102-14150807190618_thumb.jpg

post-9102-14150807191218_thumb.jpg

post-9102-14150807191639_thumb.jpg

post-9102-14150807192073_thumb.jpg

post-9102-14150807192504_thumb.jpg

Share this post


Link to post
Share on other sites

Mike B,

Nice pictures of #32 horns. I found some olive drab paint to pretty closely match the color of the seat rails and have just painted the fronts of my horns. Boths sets of your horns have been a big help in determining the correct finish for mine. I plan on spraying the backs, mounts, and phillips screws and nuts with a clear satin finish, but I do have one question. In your fifth picture above, it appears that the phillips screw heads are also painted olive on #32's horns. I assumed that they were clear zinc colored like the backs of the horns. And in the next two pictures of #32's front covers, the area around the screw holes looks to be painted olive. If the screws were painted on the horn, wouldn't these screw hole opening have a clear metal ring around them as if blocked by the screw head?

I know, way too anal, but curious minds need to know these things. Great job, Mike B.

I'll post pics of mine when completed.

Dan

Share this post


Link to post
Share on other sites
If the screws were painted on the horn, wouldn't these screw hole opening have a clear metal ring around them as if blocked by the screw head?

Good question Dan. The screws and nuts look like they were painted separately, so maybe the olive colored components were painted separately and then assembled? Notice the olive paint on the back of the screw heads and on the threads in the attached picture.

I also took the horns off #210 today and cleaned them up a little bit (no sandblasting) and took some comparison pictures of them with the other two sets. Notice that the heads of the bolts used to attach them to the radiator frame also look to be painted olive, but the bolts used on my 5/72 are cad plated with no paint. It also looks like the horns from #210 may have some olive overspray on the back side, or maybe its just dirty. Its hard to tell.

What brand of paint did you use to paint yours? I found some semi-gloss dark OD paint on the internet today that I am planning to order tomorrow.

-Mike

post-9102-14150807209557_thumb.jpg

post-9102-14150807209898_thumb.jpg

post-9102-14150807210334_thumb.jpg

post-9102-14150807210756_thumb.jpg

post-9102-14150807211185_thumb.jpg

post-9102-14150807211614_thumb.jpg

post-9102-14150807212133_thumb.jpg

post-9102-14150807212564_thumb.jpg

post-9102-14150807212989_thumb.jpg

Share this post


Link to post
Share on other sites

Media Blasting is fun!

When I first started cleaning up my parts I really enjoyed the before and after.

I use Glass Bead more than anything else, and control the air pressure to make a difference in cleaning times(at the expense of the media), but I do keep walnut Shells and Aluminum Oxide on hand as well. Sometimes I just toss the parts in my Revibratory cleaner and let it go. One thing I noticed is that thoroughly degreasing the parts to be cleaned really helps out and keepy the media from being contaminated-and spreading the grease to everything else in the cabinet. Now I have a stainless steel pot that I boil most parts in with a water/degreasing agent (Whisk, Marine Clean, Simple Green, etc) for a while before I blast them, When boiling a part would not be a good idea(Master Vac), I clean it thoroughly with clean rags, a spray bottle of the above mixture, and give it a final rinse with Mineral Spirits(spray bottle). Let it dry and spray media at it!

Will

PS

all of the unrestored/NOS Horns I have seen have the Olive Drab coating on them

Share this post


Link to post
Share on other sites

I just noticed something else about the horns. All four of the horns from #32 and #210 have a date code of "S10" and the horns from my 5/72 car have a date code of "V5". I am guessing that "S" translates to the year 1969 and "10" is the month of Oct (#32 has a production date of 10/69 and #210 has a production date of 11/69). "V" would then be 1972 and "5" would be May. What is the date code on yours Dan?

-Mike

Share this post


Link to post
Share on other sites
I just noticed something else about the horns. All four of the horns from #32 and #210 have a date code of "S10" and the horns from my 5/72 car have a date code of "V5". I am guessing that "S" translates to the year 1969 and "10" is the month of Oct (#32 has a production date of 10/69 and #210 has a production date of 11/69). "V" would then be 1972 and "5" would be May. What is the date code on yours Dan?

-Mike

My date codes are not going to be accurate to the manufacture of my car.

Pierre Z did most of the restoration and he had a tendancy to swap parts out from other cars. He probably did this with the Vintage Restorations also.

One horn is T10 and the other is U3.

I will try to attach a couple of pictures of the olive drab I used. The color went on a little too glossy, so I used some super fine steel wool to knock down the gloss and then do a quick polish. I think the final result came out real close to the original. Tell me what you think.

Dan

Mike, I just noticed (not able to absorb too much at once as an old person) that #210's mounting brackets also appear to be painted olive along with the mounting bolts. Your right, not able to tell if the backs were painted or left metal colored. I think I may just paint the phillips screws, nuts, and mounting brackets olive also, and leave the back natural metal. My mounting bolts are new gold zinc which I will leave alone.

post-2148-14150807213754_thumb.jpg

post-2148-14150807214401_thumb.jpg

Edited by AZ-240z

Share this post


Link to post
Share on other sites

Looks good Dan. I think the center of the horns in the second pictures of post #37 are pretty representative of the original color and it seems to be a good match. The paint number on your can (#24087) is the same color number on the paint I am planning to order tomorrow.

-Mike

Share this post


Link to post
Share on other sites

Thanks, Mike. The color matches up pretty good with the seat rail color so I think you will be happy with that paint color code. I bought it at my local auto paint supplier. I would also like to create a stensil for the "H" & "L" on the mounting brackets, but my just pass on that because it would have to be perfect to look correct and original.

Dan

Share this post


Link to post
Share on other sites

I finally finished restoring my horns and thought I would add a few pictures of the results.

I made a set of gaskets for each side of the diaphram as the old paper diaphram material was pretty much toast. Also having a tough time getting these horns to work properly using the adjustment screw on the back plate, probably because of these new diaphram gaskets. There is a proceedure for volume adjustment in the Electrics section of the FSM but I'm doing it by trial and error for now.

I was tempted to paint the heads of the phillips screws, but this thread shows both painted and bare metal.

Anyhoo, I'm glad they are done for now.

Dan

post-2148-14150807427478_thumb.jpg

post-2148-14150807428196_thumb.jpg

Share this post


Link to post
Share on other sites

Mine are the same. Same color as used on the seat sliders.

Yes, mine are also the olive drab and original. There is a pick of them on the '70 refresh thread.

Share this post


Link to post
Share on other sites

Thanks, Randy. The color is not exact, but very close to the seat slider rail color. It is difficult to see the difference unless the colors are viewed side by side, and then the new paint just appears a little less faded.

Motorman7, it'l be fun watching the refresh of your extremely nice survivor. Hope you will have as much fun as I have had doing mine.

Dan

Share this post


Link to post
Share on other sites

I ordered the same paint code that Dan used (24087), but from a different manufacturer (Gillespie). I found two places that sold it online (Rapco is the place I bought it from). After I painted a set of horns with it, it seemed a little more brown than what was originally on the horns from my 1969 production cars. So I ordered the exact same paint that Dan used (Aervoe) and painted a spare set. That paint seems to be slightly darker green, and a little more glossy than the original paint. Like Dan, I used some steel wool on the darker green horns to make them a little less glossy. I think either paint would be close enough for most people. Here are some comparison pictures with and without flash (it is an overcast Seattle evening here). The Aervoe brand is on the left, the original is in the center, and the Gillespie/Rapco is on the right. I decided to paint the screws and nuts (including the mounting bolts) since that is how they were on my cars.

-Mike

post-9102-14150807479685_thumb.jpg

post-9102-14150807480205_thumb.jpg

post-9102-14150807480625_thumb.jpg

post-9102-14150807481088_thumb.jpg

Share this post


Link to post
Share on other sites

These are mine. Pretty close to original but with some minor corrosion. build dat 3/70

Rich

post-19125-14150807481515_thumb.jpg

Share this post


Link to post
Share on other sites

Not having a soda blaster I used a wire wheel on a bench grinder followed by several applications of naval jelly which got a lot of the rust off and then I painted the horns with primer and then black. Would have painted drab green if I had known that was the original color. Had to have a shop weld on new nuts where the horns originally installed because I couldn't get the horn mounting bolts to go all the way into the rusty bolt holes. PO had removed horns. Lots of anti seize went on the relatively short new bolts to prevent corrosion of the new bolts.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Who's Online   0 Members, 0 Anonymous, 315 Guests (See full list)

    There are no registered users currently online

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.