ConcoursMustang Forums
1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1966 Mustang => Topic started by: Shasmu on December 07, 2014, 03:09:26 PM
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I noticed these castings are different on these 2 proportioning valves. Is one type early, and one type later production, and are the internals identical?
The bottom example is known to be removed from a low mileage '66 k-code coupe and appears to have been painted grey originally.
The origin of the upper valve is unknown, but is from a Mustang.
The seal kit available from Drake doesn't have the correct size seals for the upper valve. .http://www.drakeautomotivegroup.com/Store/Product/C5ZZ-2B091-K.aspx?wid=141
Not sure if the seal kit will fit the '66 prop. valve till I get it taken apart.
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Mine from 66 Metuchen car. Just rebuilt, was black (and rust), now just black.
I believe the top valve might be from a Corvette, they were also using KH prop valves. Never seen them side by side but thought I read somewhere that the vet didn't have a machined end near the cap with the date stamp. The vet also didn't have a date stamp and one of the seals inside wasn't the same either.
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Thanks for the info. The '66 is from a San Jose car.
I see your valve has a brass lock nut.
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Here's the thread about corvettes
http://www.corvetteforum.com/forums/c1-and-c2-corvettes/1673636-j-56-kelsey-hayes-proportioning-valve.html
The nut on mine is plated steel. Camera in phone makes it look like brass.
What's the build date of the K it came from?
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There are two different types of valves for Mustangs, A and B. The size of one of the
O-rings is different so I buy both types from NPD and use the one fitting on the
valve I am working on.
Texas Swede
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Thanks Swede!
Dave
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I am rebuilding mine now as we speak. There is a really good site that shows the differences between the early and late valve.
Check it out http://www.stangerssite.com/brakevalve.html
Here is a picture of the insides of mine.
Good Luck.
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Interesting reading between the Corvette Forum an the Stangerssite. I have two of these valves one is, I presume, OE to the car and the other rescued from a swap meet. Both have the ' A ' piston with the purple outer sleeve, both have the machined/grooved end and both have date stamps on the removable butt plate. One date stamp is 327 4 and the other 329 4. Brian
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Not mine, saw this service replacement on ebay tonight. Top edge appears flat compared to originals I've seen. Date code looks like it starts with a 7?
http://www.ebay.com/itm/65-66-Shelby-Mustang-Kelsey-Hayes-Disc-Brake-Proportioning-valve-NOS-w-box-/281722002554?hash=item4197f09c7a&vxp=mtr
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Not mine, saw this service replacement on ebay tonight. Top edge appears flat compared to originals I've seen. Date code looks like it starts with a 7?
Looks like when they restored the valve they remachined the top surface and cut off enough to make the top surface an oval - without the two (for lack of a better term) V's we often see. Can't seem to make out the PAT on the side facing the camera. Might just be the glare off what appears to be a fresh paint job
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Guess I should learn to read not just look at pictures :o
"The number on the end cap is 1402"
Also didn't read that it was sleeved, rebuilt, painted and as you point out, probably machined. A stretch for NOS
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Can anyone confirm whether the paint daub in the pic attached is factory correct?
More interested in San Jose examples.
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Can anyone confirm whether the paint daub in the pic attached is factory correct?
More interested in San Jose examples.
What year car do you have?
IMHO I wouldn't use that mark at this time or suggest it on a 65 or 66 Mustang
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What year car do you have?
IMHO I would use a mark like that or suggest it on a 65 or 66 Mustang
Would or wouldn't? ;)
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Would or wouldn't? ;)
Fixed/corrected. Answering too late a night
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There was no trace of a yellow mark like that on the original prop valve on my 9/65 SJ car.
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IMHO I wouldn't use that mark at this time or suggest it on a 65 or 66 Mustang
There was no trace of a yellow mark like that on the original prop valve on my 9/65 SJ car.
Thanks for confirming