Carb ID

[Jdiesel25]

I’m assuming this is a cheap reproduction? I have a correct M5 just curious as I never saw this before

[Jdiesel25]

Additional pics

[T. Cotten]

How is your 'correct' M5 different, Jdiesel?

Thanks in advance as always,

....Cotten
PS:
So far, it only appears to me that the somebody ground upon the idle side casting, for some unknown reason...



image_53045.jpg


Probably to remove hammermarks.

[Jdiesel25]

M5 Linkert

[Jerry Wieland]

I don't think it is repop but it looks like it was lightly polished and maybe chromed at one time.

With those numbers gone on the left side maybe somebody took a different carb and faked it as a M%.

Jerry

[Steve Slocombe]

There are reproduction M88, M51 and M51L Linkerts coming out of Europe and I think they made some M5 versions at the time. I would not call them cheap, say $800.

[grease monkey]

those obscured letters can result from using too much pressure or aggressive medium and method in your blast cabinet.

[T. Cotten]

those obscured letters can result from using too much pressure or aggressive medium and method in your blast cabinet.

Why wasn't the boss with the stamped 4 obliterated, Grease Monkey?

(My ALOX cabinet at average 90 psi would take days to remove that much bronze!)

...Cotten
PS:
My notes show only M5s had a 4 stamp there.

Here is a comparison of the model stamp,

m5diesel.jpg

with others:

M5STAMPS.jpg

[Steve Slocombe]

Dear Tom, do you think two of those M5s have dots after the numbers? Some of the M21s have a punch mark after the number to show the idle hole has been slightly enlarged after some early backfiring and fires. The M5 would also have been new on the 61s so maybe also received some mild tinkering?

[T. Cotten]

Dear Tom, do you think two of those M5s have dots after the numbers? Some of the M21s have a punch mark after the number to show the idle hole has been slightly enlarged after some early backfiring and fires. The M5 would also have been new on the 61s so maybe also received some mild tinkering?

I don't have the reference handy, Steve,

But I seem to remember something about one of the idle bleeds opened a bit more by the factory, which was eventually applied to all, and then the dot eliminated.

We may never know for certain,

...Cotten
PS:
Just for mystery's sake:

51DOTSTP.jpg

bonstmps.jpg

image_53064.jpg