Topic: 1970 scj horns

[rayms69]

I just tried bolting up my horns, there is a tab that juts out and doesnt allow for flush mounting. Do I have the wrong horns?

[J_Speegle]

More likely (just guessing) that your radiator support has been replaced/changed and lacks all the right holes

Some pictures to help










And a shot of a 69 with the passenger (both) side mounting location

[rayms69]

 AHA .the pass side was not moved right? Just the drivers side horn was just moved over. I am with you on your guess, I really doubt it was replaced. There is a hole that is tapped, no additional hole drilled(the 4th hole on the grey/red oxide primer example). So are you saying someone on the assembly line was supposed the drill a hole by hand or was it stamped in the every support assembly headed for SCJets. But I agree seems fishy.

[rayms69]

Can someone give me measurements for drilling holes for the drivers side horn move, this shroud is suspicious, i think your right Jeff. I do have a 69  scj horn shroud brace,  should spacing be the same, 70s didnt have this brace/bracket

[rayms69]

never mind, gonna use that 69 bracket as a template, i have one that is not going to be installed,may as well get some use out of it

[Brian Conway]

Liked your idea about the assembly line workers drilling holes.  Thought you might get a kick out of what my horns look like.  Brian

[rayms69]

looks fine to me, took out the carbide tips today, they look proper, besides im gonna keep her until i cant drive no more and handing the keys to my daughter that fateful day, so i dont care what A$$ might say something about it, thanks for everyones input

[J_Speegle]

never mind, gonna use that 69 bracket as a template, i have one that is not going to be installed,may as well get some use out of it

Creative idea of a template - nice

Liked your idea about the assembly line workers drilling holes.  Thought you might get a kick out of what my horns look like.  Brian

Am I missing something??  Looks like my 69 - Of course Rayms69 will be not drilling that middle hole since its it was a punch hole on all radiator supports

[Brian Conway]

I did not know that was a pre-existing hole and generic to all 69 radiator supports.  Learned something new there.  On my car the ' punch hole ' has been enlarged in an attempt to get a home for the horn locating pin.  Thats my best guess anyway.  The out board horn has two holes one for the mounting bolt and one smaller hole for the locating pin.  I am curious about the grounding strap on the left in the other photos and the ' V ' shaped hole on the right in your photo.  I don't have that ground nor a hole indicating that it was ever there.  Where are the date stamp locations for the support other than at the very bottom @ right.  NJ built 9/19/68  Thanks,  Brian

[J_Speegle]

........I am curious about the grounding strap on the left in the other photos and the ' V ' shaped hole on the right in your photo.  I don't have that ground nor a hole indicating that it was ever there.  Where are the date stamp locations for the support other than at the very bottom @ right.  NJ built 9/19/68 

So somewhere in the 110,000 range I would guess. Yes noticed the odd "V" - had not seen that before either. Since this was/is a restored car I wondered if its a repo or later service replacements. SO with your inquiry off to the picture vault again

Yes the "V" does  not show up on any other so likely a reproduction or PO thing

Looks like the prepunched hole is used for AC cars - for the condenser mount

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The examples (yes it looks like - have plenty of more examples) that the passenger side ground wire goes there. Cars just from your car's time period and plant

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[rayms69]

i have the ground wire, wrong screw im sure,its a flat head screw, i have seen hex and phillips in pics, need to examine pics closer, probably more of the hex head seems, oh yeah, that center hole lined up on the template too, i thought that was cool, maybe that was just a template all along, assembly lne guys leaving them on  69s and not 70,maybe cost savings

[Brian Conway]

Interesting idea about the brace.  Actually seems more likely that it would be used as a template rather than a brace.  Would tend to explain why some cars had them and not others.  FWIW my car does not have one. 
Thanks Jeff for the ground wire explaination.  No AC on my car and I would have guessed lighting. 
. 
The only date stamp I have found on the the entire radiator support frame is at the very bottom right.  Stamped on the forward facing portion of the tubular frame.   Below the battery area and between the bumper braces.  Brian

[J_Speegle]

Still think the plate was something the engineers came up with (they would not have had many hundreds of them at the plants if they were templates) and like many things changed after some other engineers (or bean counters) found out.

Many examples of running changes (early Boss 302 rear shock mount welds come to mind) that were done for a while then eliminated as a cost saving thing