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> zeniths on a 914/6
76racer
post Aug 15 2016, 06:47 PM
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Hi, does anybody know if Zeniths ever came stock on 914/6? My buddy acquired an old 6 motor that came with Zeniths on it and they look like they've been there a long time.

thanks Joe
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mepstein
post Aug 15 2016, 06:51 PM
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Webers were stock
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forrestkhaag
post Aug 15 2016, 06:51 PM
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Sounds like an early 911 engine that originally came with Zenith's and not related to 914-6 Weber applications.. Others with alot more info will clarify..

(IMG:style_emoticons/default/beerchug.gif)
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forrestkhaag
post Aug 15 2016, 06:53 PM
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Agree with Mark / the set of triples I now have for my 6 build match the original 914-6 build.. (IMG:style_emoticons/default/beerchug.gif)
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barefoot
post Aug 15 2016, 09:21 PM
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According to Bruce Anderson, 911E in 1970/71 had Zenith 40 TIN's,
seems to be only applications
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bretth
post Aug 15 2016, 10:26 PM
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I thought 70-71 911E had FI and the 911T had the budget Zenith carbs. I have a set of Zeniths would the part numbers on them give a clue what they came from?

Brett
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mountainroads
post Aug 15 2016, 10:52 PM
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QUOTE(barefoot @ Aug 15 2016, 08:21 PM) *

According to Bruce Anderson, 911E in 1970/71 had Zenith 40 TIN's,
seems to be only applications


Sorry: ALL 911E's, 1969 - 1973, came from the factory with Mechanical Fuel Injection (MFI. "E" for Einspritzung.)

As Bretth said: Zeniths were a 911T, 1969 - 1972/1973 (?) application.

- MR
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Toast
post Aug 15 2016, 11:05 PM
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All I can say is DONT DO IT!!

I've had zenith carb....and they are the worst thing Ever!!
Unless you like working on carbs all the time...
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oldie914
post Aug 16 2016, 03:00 AM
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In 1970-71, the US version of the 911T (2.2ltr) had Zenith carbs. The German version had Weber 40IDT3C. The engine in question probably has Zenith carbs from a 2.2ltr engine or is a 2.2 engine. Check the serial number.
The Zeniths were trouble even when they were new; the idle circuits would stop up. Bolt on a set of Webers and the problem was gone.
The 1972 European 2.4T engine had Zeniths, the US version had MFI. Both engines were changed to CIS injection during the 72 or 73 model year.
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rgalla9146
post Aug 16 2016, 04:27 AM
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QUOTE(oldie914 @ Aug 16 2016, 05:00 AM) *

In 1970-71, the US version of the 911T (2.2ltr) had Zenith carbs. The German version had Weber 40IDT3C. The engine in question probably has Zenith carbs from a 2.2ltr engine or is a 2.2 engine. Check the serial number.
The Zeniths were trouble even when they were new; the idle circuits would stop up. Bolt on a set of Webers and the problem was gone.
The 1972 European 2.4T engine had Zeniths, the US version had MFI. Both engines were changed to CIS injection during the 72 or 73 model year.


CIS came in 1973.
The switch came to be known as 1973 and a half.
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Mike Fitton
post Aug 16 2016, 07:26 AM
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My '71 Targa has Zenith's and they run great, if you are having problems with them then you have someone working on them that don't know what they are doing. When they get dialed in right they run better than my webers on m 914-6.
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injunmort
post Aug 16 2016, 07:30 AM
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zeniths on my 1970 911t 2.2l
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barefoot
post Aug 16 2016, 08:09 AM
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QUOTE(mountainroads @ Aug 16 2016, 12:52 AM) *

QUOTE(barefoot @ Aug 15 2016, 08:21 PM) *

According to Bruce Anderson, 911E in 1970/71 had Zenith 40 TIN's,
seems to be only applications


Sorry: ALL 911E's, 1969 - 1973, came from the factory with Mechanical Fuel Injection (MFI. "E" for Einspritzung.)

As Bretth said: Zeniths were a 911T, 1969 - 1972/1973 (?) application.

- MR

Bruce got it wrong eh ?
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mountainroads
post Aug 16 2016, 08:25 AM
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QUOTE(barefoot @ Aug 16 2016, 07:09 AM) *

QUOTE(mountainroads @ Aug 16 2016, 12:52 AM) *

QUOTE(barefoot @ Aug 15 2016, 08:21 PM) *

According to Bruce Anderson, 911E in 1970/71 had Zenith 40 TIN's,
seems to be only applications


Sorry: ALL 911E's, 1969 - 1973, came from the factory with Mechanical Fuel Injection (MFI. "E" for Einspritzung.)

As Bretth said: Zeniths were a 911T, 1969 - 1972/1973 (?) application.

- MR

Bruce got it wrong eh ?


I'd have to look at the book for myself before claiming that. If that is indeed what is printed, then yes - either a mistake or a misprint.

In some ways, it's surprising that the 914-6 *didn't* come with Zenith carbs, since the engine is essentially a 1969 911T.

- MR
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brant
post Aug 16 2016, 08:43 AM
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[/quote]

I'd have to look at the book for myself before claiming that. If that is indeed what is printed, then yes - either a mistake or a misprint.

In some ways, it's surprising that the 914-6 *didn't* come with Zenith carbs, since the engine is essentially a 1969 911T.

- MR
[/quote]


Correct
no zeniths came in the US on the 914/6

zeniths came in the US on the 70-71T 911
I would have to look back at the 69T - 911, but almost positive it had webers

the 72 - 911T came with MFI
the 73 - 911T came with the CIS (small spigot 7R case one year only)
I need another one of these cases for the race car if anyone wants to let one go affordably.

I believe that the Zeniths in the US were unique to the 2.2 911T cars
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mepstein
post Aug 16 2016, 09:03 AM
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The 69T we restored had Webers. So 99.9% sure.
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Mark Henry
post Aug 16 2016, 09:41 AM
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Zeniths are OK, just there is no parts for them.
The weber IDA has parts, many parts are reproduced, big selection oversize vents and jets and main things like jets, etc., are the same as the 2 barrel IDA the bug guys use.
Not to mention that both the 2 and 3 barrel (PMO) are reproduced.
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jd74914
post Aug 16 2016, 09:42 AM
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QUOTE(brant @ Aug 16 2016, 09:43 AM) *

Correct
no zeniths came in the US on the 914/6

zeniths came in the US on the 70-71T 911
I would have to look back at the 69T - 911, but almost positive it had webers

the 72 - 911T came with MFI
the 73 - 911T came with the CIS (small spigot 7R case one year only)
I need another one of these cases for the race car if anyone wants to let one go affordably.

I believe that the Zeniths in the US were unique to the 2.2 911T cars


You do also have to watch for the ROW 2.4 911TV cars which came with Zeniths (vs. the 911TE with FI in the USA). My dad bought a 911 a while ago with a TV motor in it and we were a bit confused for a while. They definitely existed in '72, but I'm not totally sure about '73.
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mepstein
post Aug 16 2016, 09:51 AM
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QUOTE(Mark Henry @ Aug 16 2016, 11:41 AM) *

Zeniths are OK, just there is no parts for them.
The weber IDA has parts, many parts are reproduced, big selection oversize vents and jets and main things like jets, etc., are the same as the 2 barrel IDA the bug guys use.
Not to mention that both the 2 and 3 barrel (PMO) are reproduced.

Same issues with PMO's. Nice carbs but parts only available from one place - PMO.
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GeorgeRud
post Aug 16 2016, 11:21 AM
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Paul Abbot @ Performance Oriented has been working on modifying the Zeniths. If properly set up, they should work.
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