1967 repop bumper bolts
Does anyone have an opinion on which parts vendor supplies an authentic set of bumper bolts, nuts and washers?
Neal
Neal
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Re: 1967 repop bumper bolts
Neal,
What head mark are you chasing? They were different through the years.
With a 67 I know you might have had RSC, M, perhaps TR. -
Re: 1967 repop bumper bolts
All of them. The car was painted in 1980 and all the original bolts were replaced with new ones. I wasn't astute enough then to appreciate the importance of originality. I have looked at some of the threads and am confused as to what head markings I should focus on and whether they should be mixed, all of one type in the front and different in the back or something else.
NealComment
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Re: 1967 repop bumper bolts
From these threads you should find RSC M and TR are probable top choices for 67. RSC's are being done on a special request basis, M and TR pretty common. Not every car got mixed bolt heads. If they were one side was one mark and the other side another. You see that for 66 and would apply to 67. Not every car survived so if we have one data point that has M on the left side and RSC on the right, it is just one data point out of 25000 cars produced that year.Comment
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Re: 1967 repop bumper bolts
Neal,
If you are looking for bolts that have head marking that look authentic the "M" (7/16" bolts) are the only one's that pass my judgement. The others look "fake".
You would be better off cleaning up the originals (bead blast) and send them out for zinc plate if not pitted.
Do not use lock washers with serrated edges as they are incorrect. The originals were plain. Repop plain washers are in general too big in diameter and not thick enough as compared to originals.Comment
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Re: 1967 repop bumper bolts
Neal,
On the replate - just make sure they do zinc, not zinc di chromate.
Here is an active thread if you did not see it re the nuts, bolts and washers...Comment
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Re: 1967 repop bumper bolts
Ron,
One can spec a clear chromate that will give a little more protection and after a coupe months will not be visible in normal use.
As you say the dye-chromate (as in yellow) would be total wrong.Comment
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Re: 1967 repop bumper bolts
Gene, True. For the purist, zinc only and for how these cars are used, corrosion is the least of the worries. I can tell the difference, so if its a top flight where its going to look new for years, preference is w/o the added chromate.Comment
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1967 bumper washers
Gene,
The plain washers that some folks buy at the hardware store are too big in diameter, as you say, but they are also too thick. Those washers are typically not SAE washers.
I think the best washer available is an SAE washer for a 7/16" bolt, which has a thickness spec of between 0.051" and 0.080". In my experience, all the current SAE washers I've seen are closer to the 0.080" limit. The original bumper washers on my '66 tend to be a little thinner than 0.080".
GaryComment
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Re: 1967 repop bumper bolts
Gary,
I think you will find the original washers to be close to 1/16" thickness which is typical sae of the day.
The junk that's available today is by gosh and by golly china junk of any gauge thickness. And the steel quality is junk too.Comment
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Re: 1967 repop bumper bolts
Gene,
Can't replate mine. All the bumper bolts, nuts and washers that were replaced when the car was repainted in 1980 were replaced with the "Ace Hardware"variety. Anyone have a recommendation for a source for acceptable repop bolts? I take it from the replies that M, TR and RSC head markings are all acceptable for a 67.
NealComment
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Re: 1967 repop bumper bolts
Neal, I sent you an email on this depending upon what you need.Comment
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Re: 1967 repop bumper bolts
Neal,
I have not seen TR on anything newer than 65 on original cars. That does not mean they were not used, just I've not noticed any. The M is the most prevalent for 67 bumpers. But that is not saying the only ones. RBW and C are very viable for 67 but I've not noticed any that were on "untouched" cars. The repops are quite noticeable other than the M's.
I suggest the M usage since no judge should ever question it on a 67.Comment
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Re: 1967 repop bumper bolts
Gene,
Leaving the 4 grade 8 front brace to bumper bolts out of the discussion, there are 3 different bolts in a C2 system:
1. The 4 front brace to cross member 1" short bolts (I've seen TR here un molested) What others - real that is because the long time repor here was the RBW, easily noted?
2. The largest usage are the 1-1/4 bolts, we agree RSC and M.
3. The longer 1-3/4 bolts two in the front, and the rest are in the back inner braces, lots of RBW, I don't recall seeing any others real, like rusted in place on un molested cars 65 67.
Your thoughts as we help Neal?Comment
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