gtam original gauges - Alfa Romeo Bulletin Board & Forums
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post #1 of 29 (permalink) Old 03-23-2019, 03:02 PM Thread Starter
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gtam original gauges

hi guys
i bought this two years ago...and payed a lot..
i been told they are original gtam corse..
its stamped behind giulia 68
id like to here your opinion..
they are nos
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post #2 of 29 (permalink) Old 03-24-2019, 05:59 PM
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I don’t have answer but those are cool.
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post #3 of 29 (permalink) Old 03-25-2019, 06:35 AM
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GTAm gauges with stamps from 1968

Hello domo75 and members,

I checked the book "Alfa Romeo GTA" written by Maurizio Tabucchi and published in 1994 by Giorgio Nada. In the colour section after page 79, there are two pictures that show part of the gauges. Odometer goes up to 220 km, the revcounter up to 100 (x100) rpm. Indicator on the revcounter is red, on the odometer it is white. The revcounter looks similar but I have not enough details to be decide yes or no. The odometer is different because it goes up to 220 km instead of 260 km.

But we know that this is not exact science. There was not such a thing as a "standard" 1750/2000 GTAm. So instruments might differ too. There are pictures of GTAm dashboards here on the bulletin board. Check it out.

Another thought, Alfa's that got anywhere near 260 km in 1968 were few. Tipo 33? Revcounter too?

Ciao, Olaf
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Olaf Roeten a.k.a. Zagato_Olaf, Bussum, The Netherlands

Last edited by Zagato_Olaf; 03-25-2019 at 06:47 AM. Reason: question
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post #4 of 29 (permalink) Old 03-25-2019, 08:43 AM
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What's the diameter and the depth?
I think Olaf might be right when saying tipo 33 although the few cockpit pictures in the Collins/McDonough book does not look similar.
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Last edited by AutodeltaGTA; 03-25-2019 at 08:55 AM.
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post #5 of 29 (permalink) Old 03-25-2019, 08:59 AM Thread Starter
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hi
a touch is the mesurments...
the same on both
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post #6 of 29 (permalink) Old 03-25-2019, 09:39 AM
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Hi again.
On second thought and checking pictures from the book by whom we cannot mention �� I am pretty certain your instruments originates from a TZ.
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post #7 of 29 (permalink) Old 03-25-2019, 09:41 AM Thread Starter
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hi
can you be more specific?
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post #8 of 29 (permalink) Old 03-25-2019, 09:57 AM
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Looks like the tach might be from a TZ2, the image of the speedo, while it does go to 260 kph, doesn't appear to be the same, the 0 is at roughly the 7 o'clock position and 260 at around 5 o'clock, the mystery continues.
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post #9 of 29 (permalink) Old 03-25-2019, 10:14 AM
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Quote:
Originally Posted by VabeneGTV View Post
Looks like the tach might be from a TZ2, the image of the speedo, while it does go to 260 kph, doesn't appear to be the same, the 0 is at roughly the 7 o'clock position and 260 at around 5 o'clock, the mystery continues.
Look at the needle, its not the same, the one on the TZ2 is thinner (like the ones in the SMITH gauges) they look pretty OE to me, but ehh what do I know, and on the rear of the rev counter it states "14 June 1968" its the date of manufacturing

Last edited by quadrifolio; 03-25-2019 at 10:18 AM.
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post #10 of 29 (permalink) Old 03-25-2019, 11:52 AM
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Your gauges have nothing to do with GT Am. There was no homologated ‘standard’ for GT Am and regular GTV dashboard or its lightened copy was used to host instruments; rev counter up to 9000 rpm and tachygraph that signed 240 kph (sometimes different ones selected by owners). Other gauges were standard ones from the mother version. The instruments that are in your possession were standard equipment for TZ model. They are rare and very expensive on today’s market (120 mm diameter).
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post #11 of 29 (permalink) Old 03-25-2019, 02:30 PM
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i always thought the tz2 ones are much larger in diameter?
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post #12 of 29 (permalink) Old 03-25-2019, 05:24 PM
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Those instruments and the fasteners on the back look like they are from a Spider.

I wonder if they are for an Ausca Duetto.

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post #13 of 29 (permalink) Old 03-26-2019, 01:09 AM
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Hi

Well, I do not think it as straight forward as it looks....

The calibration of the instruments is the same as TZ, just compare the photos.

However, there are significant differences;

Firstly the orientation of the numerals is completely different, TZ - Cannot vouch for TZ2 - are as all standard Alfa gauges. Rotation starts at about 7 o'çlock to 5, as posted by ARGTAReg, above. However, I do accept that the rev gauge in question is more appropriate for racing, since the rev indicator will be in the 'sweet' vertical position more often when racing.... but in my car the vertical position needs to be at 6 o'clock otherwise it is obscured by the wheel.

Secondly, no TZ has auxiliary information within the instrument ie, RISCALD. or GENERAT.

Thirdly, it is odd that the two instruments each have a GENERAT. indicator, surely only one needed?

Finally, Domo75's gauges at 125mm seem small compared to TZ instruments posted above....but nothing to hand to measure!

Just my take on it all....

Richard

Edit; I think all TZ production finished by 1967, but instruments in question are dated 14 Giu 1968!
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Last edited by richards; 03-26-2019 at 01:17 AM. Reason: Add 14 June 1968 info.
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post #14 of 29 (permalink) Old 03-26-2019, 01:38 AM
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Just for the record t33 speedos are 120mmin diameter, standard 7 to 5 orientation and run to 300 km/hour...where fitted!

Richard
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post #15 of 29 (permalink) Old 03-26-2019, 01:55 AM
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The instruments (without fuel gauge) remind me of 1750 Spider (1st picture below, 2nd one with fuel gauge is 1750 GTV) and/or 1300/1600 Junior Z (but they're not).

BTW, some interesting (but small) GT Am interior pics can be found in this thread.





-Ruedi
[SIZE="1"]'63 2600 Touring Spider (AR 191437, the car that started the 2000/2600 International Register, reassembly in progress)
ex-'65 2600 SZ (AR 856043, the car in my avatar, sold as resto project to Austria)
Maintainer of a private 2600 SZ register (not the one in the Netherlands).[/SIZE]

Last edited by tubut; 03-26-2019 at 02:56 AM.
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