Can someone look up a screw with part number 156253. I would like to know if the original screws were countersunk phillips or slot. I would guess that all of them have been replaced by now and the screws in the bumper now are probably not original. Judges look for countersunk slot heads.
1960 Tail Pipe Through-the-Bumper Insulator Screws
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Re: 1960 Tail Pipe Through-the-Bumper Insulator Screws
Joe,
P&A 24 March 1970 shows 156253 as a 1/4-20 x 3/4" long CAD/Zinc with CR (cross recess) head.
Didn't find any earlier reference in P&A books.
Gary
....NCRS Texas Chapter
https://www.ncrstexas.org/
https://www.facebook.com/profile.php?id=61565408483631- Top
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Re: 1960 Tail Pipe Through-the-Bumper Insulator Screws
Joe,
My car has phillips head screws. Upon closer inspection there also appears to be an external tooth style lockwasher under the screw head. I don't think these bumpers have ever been off the car but I can't say for sure.
I'm going to a flight judging event tomorrow (as a spectator) and I'll scope out the C1's there. You have piqued my interest......
TomPA201836.jpg
edit: Just read judging manual, calls for slotted like you say. I suppose the insulators on my car could have been replaced at some point, but given the shape they are in, I thought they may have been the originals. I have a pile of old receipts for the car. Maybe one of the ones I could not identify the P/N on was for replacement exhaust insulators. Time to start digging...........1958, 283/245, White/red - Top Flight, October 2016
1960, Black/black, 283/230 4sp
1966, Black/Red, 327/350 4sp w/AC
1967, 427/390, 4sp, Goodwood Green, Coupe
1971 LS5, 4sp, coupe, Bridgehampton Blue
2007 Z06, Lemans Blue
Newsletter Editor, Delaware Valley Chapter- Top
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Re: 1960 Tail Pipe Through-the-Bumper Insulator Screws
Yeah Joe, I thought that was unusual when I saw it. I believe the exhaust was replaced in the early 70's and maybe the insulators were replaced then. I need to go through the receipts and see what I can find. Either way, the screws / insulators are most likely not the originals.
Tom1958, 283/245, White/red - Top Flight, October 2016
1960, Black/black, 283/230 4sp
1966, Black/Red, 327/350 4sp w/AC
1967, 427/390, 4sp, Goodwood Green, Coupe
1971 LS5, 4sp, coupe, Bridgehampton Blue
2007 Z06, Lemans Blue
Newsletter Editor, Delaware Valley Chapter- Top
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Re: 1960 Tail Pipe Through-the-Bumper Insulator Screws
Went to the judging event at County Corvette in West Chester PA today and there was only 1 58-60 car there (several other C1's though). It had the phillips screws. I did not get a chance to ask the owner how it judged.
I believe they had over 40 cars there today. Nice turn out.
Tom1958, 283/245, White/red - Top Flight, October 2016
1960, Black/black, 283/230 4sp
1966, Black/Red, 327/350 4sp w/AC
1967, 427/390, 4sp, Goodwood Green, Coupe
1971 LS5, 4sp, coupe, Bridgehampton Blue
2007 Z06, Lemans Blue
Newsletter Editor, Delaware Valley Chapter- Top
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Re: 1960 Tail Pipe Through-the-Bumper Insulator Screws
Here's my original '59s. Never been apart with the original insulators still intact. I have owned this car well over 40 years. They are Phillips.
TomAttached Files- Top
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Re: 1960 Tail Pipe Through-the-Bumper Insulator Screws
My '59 has phillips (cross-recess) too; mine is a one-family car and I disassembled the original insulators last winter (the cad plating is long gone.)- Top
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Re: 1960 Tail Pipe Through-the-Bumper Insulator Screws
The evidence is overwhelming that the cross head, recessed were original, but at least two NCRS judges did not agree. A year ago, different judges did not indicate that cross recessed were incorrect. The good news regarding Flight judging is that the majority of the judges agree on the big point items, but not always on little details like cross head vs. slot head, coil capacitor mounted above or below the coil bracket.- Top
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