Horns

[57_BN4]

I have almost completed rebuilding the horns and have a couple of questions: What finish did the brass nut in the middle have? I carefully scratched off the multiple layers of paint and found only body colour overspray and crud. Were they left natural?

Were the horns mounted upside-down? IE is the LUCAS writing at the bottom when fitted to the car or have I put the face on the wrong way round?

Also, I managed to snap off one of the BSF screws that hold the front rings on as they were very corroded. Fortunately I managed to reclaim the thread in the horn body but nobody has sold BSF screws in NZ since waaay back. Does anyone have a screw they'd be prepared to part with for some beer money?

Cheers,
Andy.

 

[andrea]

Hi Andy
Good work- bras nut in the middle must be natural
You put the face in the correct way -LUCAS must be read upside down
this photos is from Dreams on wheels a guru in the AH restoration
https://picasaweb.google.com/lh/photo/UwyGmLhvgOOahQNj0uxpWQ?feat=directlink
it is on a 100M car
I have some screw but are very damaged an corroded

https://www.polished-stainless.com/phdi/p1.nsf/supppages/3534?opendocument&part=2
if you can find the corect screw on this site
please advise me (I am one absolute beginner in BSF
measurements)
cheers
Andrea

 

[57_BN4]

Hi Andrea,

Thanks kindly.

BSF is pretty much the same as UNF but has 26 instead of 28 threads-per-inch (the thread angle is 55deg instead of 60 too but for a corroded as heck ali casting who's really counting). I didn't have a BSF tap so used a UNF one from either side, just holding it in my fingers to clean up the threads. It begins to bind after five threads or so but that's ok as there are only about ten threads in the ali casting. Worked a treat.

I had a look through your album and my horns weren't any better than yours by the looks of things. It took massive amounts of heating on the propane flame to get the screws out and they were rusty brown colour with white powder caking up the threads when I got them finally undone. After an overnight dunk in 20% hydrochloric acid, polish on the wire buff and re-plating they look almost new. If I can't find some locally I'll PM you, you'd be surprised how well fasteners come up after the above treatment.

Cheers,
Andy.

 

[John_Progess]

Andy,
I have a couple of that style horns in my parts bin. The screws are painted but look new. My car is a BJ8 so it has a different style horn. Let me know if you still need a screw or two. Have a good day!

John

 

[57_BN4]

Hi John,

Thanks for the offer. I found a guy selling exactly these screws on ebay but he is a little shy about getting back to me on shipping costs. If he doesn't get organised soon I'll send you a PM.

Cheers,
Andy.