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post #1 of 11 (permalink) Old 03-30-2018, 05:03 AM Thread Starter
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question about engine bay photo

Italcaroz engine bay

Related to his beautiful engine bay but not specifically on his topic, I just finished sifting through my 15th giant box of pieces that are my new 1971 GTV and am wondering why some cars have 2 "brake" servos while mine has one.My parts book only shows one. Aftermarket mod? Is my car a deathtrap?

Thanks, Rob Heroux.
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post #2 of 11 (permalink) Old 03-30-2018, 05:20 AM
In '69, USA got dual brake circuits and in '71 they went to hanging pedals. Is it a euro version?

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Last edited by gprocket; 03-30-2018 at 05:22 AM.
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post #3 of 11 (permalink) Old 03-30-2018, 05:24 AM
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Garage
what year is the car.
my 1750 spider ( first series) has one booster, 2nd series 1750 coupe has 2.

cheers ian

62 LANCIA FLAMINIA GT 2500 PROJECT (now sold) 64 SPRINT GT (Gone)
68 1750 ROUND TAIL SPIDER 70 1750 GTV 62 101 GIULIA SPRINT
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post #4 of 11 (permalink) Old 03-30-2018, 05:29 AM
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In addition, all RHD cars with dual circuit brakes have two boosters.
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post #5 of 11 (permalink) Old 03-30-2018, 11:28 AM
Del
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I bought two boosters from a GTV in a wrecking yard here in Seattle years ago (these boosters were also used in the "real" Minis of the mid sixties sold here, which I also had at the time). As I remember, the GTV was a USA LHD model, don't remember what year model, though.

Del

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1989 Milano, Shankle Sport
1991 164S, stock
1994 164LS (~Q)
1972 Morgan 27

previously owned since 1964:

62 Morris MiniMinor 850, 67 Austin 1275 Cooper S (Downton 3/4 race), 64 Giulia Sprint GT (1st red one made), 72 Fiat 128 Sedan, 75 Alfetta Sedan, 78 Alfetta Sedan, 78 GTV, 81 GTV6, 86 GTV6
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post #6 of 11 (permalink) Old 03-30-2018, 01:59 PM
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My '70 GTV is a 2nd series European version and has a single, dual-circuit, master cylinder. Even if you have a single-circuit brake system you are not in any real danger because brakes rare have the kind of sudden failure people fear. Instead, the master cylinder's internals wear begin leaking and your breaking performance slowly degrades. You'll get plenty of warning, even with a single circuit system.

Jim . . . '72 Super 1300, '70, 1750GTV, 2nd series,
'62, Lancia Flaminia Zagato3c, 2nd series
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post #7 of 11 (permalink) Old 04-23-2018, 06:12 AM
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Not to highjack the thread, but ... anyone with a late GTV with U.S. spec dual master cylinder: when you bleed the brakes (open one bleed nipple), does the pedal go all the way to the floor? If that's the case, then how does the dual braking circuit protect against total loss of brakes?
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post #8 of 11 (permalink) Old 04-23-2018, 08:02 AM Thread Starter
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Somehow I got shut out of my own thread! I saw none of these responses until today. Admittedly I and still new to alfabb and am totally stupid when it comes to computerized communications .Gprocket - it is a '71 with Spica, which I think means it is a U.S. version. Italcaroz - series 2 since it's a 71?

But I may be confused.

Thanks and I apologize for thinking you were all ignoring me and my dumb questions.

Rob.
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post #9 of 11 (permalink) Old 04-23-2018, 08:33 AM
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Hi Rob,
A '71 with Spica is a US spec car. Your clutch & brake pedals should hang down from under the dash and you should have one booster with the master cylinder mounted directly to it. The dual boosters were for cars with floor pedals and the master cylinder is under the car, not in the engine compartment.

Hope that makes sense.
Mike

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post #10 of 11 (permalink) Old 04-23-2018, 08:53 AM Thread Starter
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Yes it does! I am going to try to post a picture of the assembly as it sits because it is mixing a few bits, which are in a box, unlabeled and mysterious.

Thanks, these answers may be an actual lifesaver.
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post #11 of 11 (permalink) Old 04-23-2018, 02:09 PM Thread Starter
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I think I understand now - my booster has parts that were taken off then further disassembled. They no longer look like I expected.Also,my parts manuals are for a series 1. Sprint GTC identified it as a series 2, which clarified all. There aren't huge differences between the series, but the brakes do vary. I learned a bunch. Thanks all

Rob.
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