Master Cylinder date/timing

[Mel H.]

Question: Would a casting date on '63 master cylinder of 12 days before car assembly be reasonble? Or is this too close?

[Sydney G.]

Re: Master Cylinder date/timing

Seems reasonable to me Mel.

Syd

[Mel H.]

Re: Master Cylinder date/timing

Seems reasonable to me Mel.

Syd

Thnx Syd... its kinda close, but I assume in the world of assembly lines, your bound to have some 'last in/first out' usage, as inventory wasnt likely rotated. So I'd say its highly probable... and hoping the NCRS judge sees it the same way.

Mel

[Edward J.]

Re: Master Cylinder date/timing

Thnx Syd... its kinda close, but I assume in the world of assembly lines, your bound to have some 'last in/first out' usage, as inventory wasnt likely rotated. So I'd say its highly probable... and hoping the NCRS judge sees it the same way.

Mel

Mel, in the judging the master cylinder there is 6 month window and technically it could be the day before production, but we all know that is almost impossible.

[Mel H.]

Re: Master Cylinder date/timing

Mel, in the judging the master cylinder there is 6 month window and technically it could be the day before production, but we all know that is almost impossible.

Thnx Ed.. agree one day preceeding is really questionable, but with no explicit records, and so many exceptions... can only get 'zone accurate'.

By the way, would you know if same '6 months' rule would apply to a 3461S carb date? I assume it would, but you never know.

Also need to verify if a 609 is the right water pump for 340hp... or is a 326 acceptable for a Jan 21 car. Read a number of threads but cant find definitive answer. Any suggestions appreciated.

Mel

[Edward J.]

Re: Master Cylinder date/timing

Mel the 6 mon. rule applies to all dated components that are judged.

There has been some recent discussions on the 609/326 water pump,I that at this point either would be okay depending on the judges knowledge of the pumps, but would say that the judging manuel maybe the sure way at this point to be correct, just follow

[John H.]

Re: Master Cylinder date/timing

Also need to verify if a 609 is the right water pump for 340hp... or is a 326 acceptable for a Jan 21 car. Read a number of threads but cant find definitive answer. Any suggestions appreciated.

Mel

Mel -

The 326 water pump didn't exist in 1963 (or 1964).

[Tracy C.]

Re: Master Cylinder date/timing

Mel the 6 mon. rule applies to all dated components that are judged......

Except window, vent, windshield and back glass. These are allowed up to a full year.

tc

[Paul J.]

Re: Master Cylinder date/timing

Mel -

The 326 water pump didn't exist in 1963 (or 1964).

But John what can we do, the 64 JG says 326. I read all of the recent threads about 609 being correct for 63-64, and the arguments are compelling, but there must be a good reason for the reference in the JG.

[Jack H.]

Re: Master Cylinder date/timing

While judges might know the day before is unlikely, the dating rule embraces ZERO to six months prior so the judge is helpless to deduct for the interval being too close. Heck, the interpolated build date of the car based on VIN is NOT that accurate to start with!!!

That's why owners should become conversant with our judging rules, understand their 'rights' and be prepared to calmly and intelligently discuss things with the judges. This is essentially an 'open book' test...

[Edward J.]

Re: Master Cylinder date/timing

Except window, vent, windshield and back glass. These are allowed up to a full year.

tc

Tracy, I forgot about the glass. thanks Ed

[John H.]

Re: Master Cylinder date/timing

But John what can we do, the 64 JG says 326. I read all of the recent threads about 609 being correct for 63-64, and the arguments are compelling, but there must be a good reason for the reference in the JG.

Paul -

Experienced judges should know by now that the reference in the 5th Edition '63-'64 JG about the 326 water pump is an error; it has been discussed, documented, and verified to death over the last year. I expect it will be corrected in the Sixth Edition. The folks who wrote the first four editions didn't have access to the Saginaw Foundry production records like we did.

[Tracy C.]

Re: Master Cylinder date/timing

But John what can we do, the 64 JG says 326. I read all of the recent threads about 609 being correct for 63-64, and the arguments are compelling, but there must be a good reason for the reference in the JG.

Paul, I doubt experienced 63/4 mechanical judges would deduct for a 609 and I hope the same can be said for a 175 because my very late 63 has one of those .

By default however, cars with a 326 get a pass until the manual is corrected.

tc

[Gerald C.]

Re: Master Cylinder date/timing

Hi,

In following this thread, I have a question on my 1963 master cylinder. It has the correct cast# 5462389. However, there is a R 2 below the casting #. In addition, the date code is J-20-2. Under normal determinations, it should indicate 10/20/62. However, was the "I" code implemented in this sequence? If not, the date should represent 9/20/62. The reason I'm questioning is that my build date is 10/31/62. Any thoughts?

Jerry

[Edward J.]

Re: Master Cylinder date/timing

Jerry, I have never seen a (I) in dating of master cylinders, pretty sure that (J) is Oct. Your M/cyl. is the closest I have seen to build date. But would say there is no way to truly know. I have a Jan. date on my Mar. 63 car.