Washer pump manifold screws for 1967
Does anyone have a picture of one of these screws or can tell me the difference between a real one and a repo.
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Re: Washer pump manifold screws for 1967
That would be a yes.Comment
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Re: Washer pump manifold screws for 1967
Keith,
In that case, I may be able to help, or at least advance the discussion. The wiper motor that was in my '67 was incorrect. It looked almost the same, but was wrong in some way, I would have to check the archive discussion about it to remember exactly how it was different. May have been an assembly line substitution, or not.
In any case, I exchanged it for a correct rebuilt and restored wiper motor, has "13" embossed on the main case facing the distributor (I read in the TDB archives that "13" and "14" are both correct for '67). The screws that attach what should be the off-white plastic piece (manifold) are indented hex head screws with a washer-head or flange-head, and a flat tip that is cut (a.k.a. "BT" tip). They have an "S" inside a circle headmark.
The flange-head is about 11/32" diameter, and has "spin-loc" ridges on the underside of the flange-head. The screw is Cad or zinc plated, measures #8-18 x 27/32". However, it looks too new to be original, and seems too long, sticking out well past the metal part of the wiper motor into which they are screwed, so I think these are reproductions. (see pics 1 & 2)
What should have been an off-white plastic nozzle or manifold was bright white on the restored wiper motor, so I bought a used off-white nozzle that came with what were described as original screws (see pics 3 & 4). These screws have an "S" headmark inside a rectangle with rounded ends, which in turn is inside a circle. These screws also have an indented hex head with a washer-head or flange-head, with a "BT" tip (flat tip, with cut).
These screws measure #8-32 x 9/16", and they look "old". The washer-head measures 3/8" diameter, without any "spin-loc" ridges on the underside. It appears to be too short to securely attach the plastic nozzle to the wiper motor assembly, not to mention the different threading (#8-18 vs. #8-32).
That's what I have, hopefully someone with known original parts can say whether either one is correct. If neither is correct, then I would also like to know what IS correct for a '67 wiper motor.Comment
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Re: Washer pump manifold screws for 1967
I have seen originals with a triangle marking .Thanks JOHNComment
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Re: Washer pump manifold screws for 1967
Screws for 64-67 WW motors can be a (can of worms) as there was again as usual several manufacturers of this commonly used screw. The most common are "S" with a Circle, Three Dots in a triangle, and "C". All were the same length and had the self tapping feature at the start of the screw.
The screws supplied today with pump rebuild kits are the same style but slightly longer with no self tapping feature and no logo on the head.
Also as a note the WW casting with the number 13 or 14 on the motor head has NOTHING to do with a 67 date. It is the mold cavity number! The most numbers seen on 63-67 WW motors is 13, 14, or 15. Those are the most common! It has nothing to do with the date the casting was made! If the 67 judging manual states the mold cavity number associates with the year of the Corvette the judging manual needs to be reviewed.
JRComment
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Re: Washer pump manifold screws for 1967
John or Joe Ray,
Can either of you confirm the correct SIZE screw for the wiper motor nozzle?
The #8-32 x 9/16" looks period correct but is too short, unless something about the manifold/nozzle is incorrect. The #8-18 x 27/32" screws that came with the rebuilt wiper motor seem longer than necessary, not to mention the threads-per-inch difference. Since I don't know what the correct screw part number is, I don't know how to locate the GM spec, if it's even listed in any of the parts books.
ScottComment
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