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914World.com _ 914World Garage _ Automatic Transmission

Posted by: My 914 Aug 12 2017, 05:40 PM

With so many 914 engine and transmission swaps and combinations, I was wondering if any 914's with automatic transmissions exist. Anyone know of one out there?

Posted by: burton73 Aug 12 2017, 06:13 PM

I think one of the guys had an Audi automatic behind a 4 cylinder 914 eng. He bouight it used and got it running. I think that was the story.

Bob B


Posted by: flmont Aug 12 2017, 06:26 PM

I would love to own a paddle shift 914...!!!!

Posted by: mb911 Aug 13 2017, 06:29 AM

At some point I will be doing an automatic for my dads car.

Posted by: My 914 Aug 13 2017, 02:04 PM

QUOTE(flmont @ Aug 12 2017, 08:26 PM) *

I would love to own a paddle shift 914...!!!!

What a great idea. It's a perfect car for paddle shifters. Any of those out there by any chance?

Posted by: Mueller Aug 13 2017, 02:30 PM

Another auto 914 I've seen used the engine and transmission from a Fiero, lot's of fabrication and not really an upgrade to me.

Posted by: SirAndy Aug 13 2017, 08:18 PM

Wouldn't be too hard to use a period correct 911 sport-o-matic if you can find all the parts.
popcorn[1].gif

Posted by: Andyrew Aug 13 2017, 09:13 PM

Always wanted to put a modern audi tiptronic in one with an audi engine, they came with paddleshifters. But they are not Dual clutch or anything so they shift slow like a normal automatic. You can tune the trans some but it just wont get to that dual clutch speed.

I am counting the years till the PDK becomes a realistic price. That would be an amazing trans in a 914.

Posted by: mb911 Aug 14 2017, 06:05 AM

QUOTE(SirAndy @ Aug 13 2017, 06:18 PM) *

Wouldn't be too hard to use a period correct 911 sport-o-matic if you can find all the parts.
popcorn[1].gif



I have thought about that.. There is the auto clutch set up that has a switch on the shifter..



Posted by: injunmort Aug 14 2017, 08:05 AM

i have a complete sporto in a 1970 911t. all there, still in the car, if anyone is interested.

Posted by: SirAndy Aug 14 2017, 10:27 AM

QUOTE(injunmort @ Aug 14 2017, 07:05 AM) *
i have a complete sporto in a 1970 911t. all there, still in the car, if anyone is interested.

There you go, problem solved!
biggrin.gif

Posted by: burton73 Aug 14 2017, 10:42 AM

The person with, or had the Automatic.
in his 914 is computer4kids

He also has or had a very nice 914-8 in the right color.

http://www.914world.com/bbs2/index.php?showtopic=101948


Bob B

Posted by: jkb944t Aug 14 2017, 10:48 AM

QUOTE(SirAndy @ Aug 13 2017, 06:18 PM) *

Wouldn't be too hard to use a period correct 911 sport-o-matic if you can find all the parts.
popcorn[1].gif


I actually thought there were a few 914's produced with the sport-o-matic option.

Jeff B

Posted by: burton73 Aug 14 2017, 11:09 AM

George at AA has a 6 with sport-o-matic
and it is super rare. Just because it is rare does not mean there are not a lot of people that want it.

Bob B

Posted by: SirAndy Aug 14 2017, 12:47 PM

QUOTE(jkb944t @ Aug 14 2017, 09:48 AM) *
QUOTE(SirAndy @ Aug 13 2017, 06:18 PM) *
Wouldn't be too hard to use a period correct 911 sport-o-matic if you can find all the parts.
popcorn[1].gif
I actually thought there were a few 914's produced with the sport-o-matic option.

You are thinking correctly, which is why i posted the above.

There were only about 25-ish 914s made with sporto.

Compare that to thousands of 911s and you can see why the odds are much better to find one of those in working condition.
shades.gif

Posted by: burton73 Aug 14 2017, 12:58 PM

Porsche 914-6 Sportomatic Transmission Sporto Trans NOS 91430001005

Ebay today $22,000. NOS
https://www.ebay.com/i/391508642062?chn=ps&dispItem=1

Porsche 914 914-6 911sportomatic nos new factory transmission case and tail cov

https://www.ebay.com/i/122331743062?chn=ps&dispItem=1

George has this for $350 you would need a number of parts

Bob B

Posted by: burton73 Aug 14 2017, 01:03 PM

I saw this on the web. I have too much time today.

Bob B

Dear Mr. Knutsson,

Thank you very much for your letter of October 10.
Referring to the latter and to our phone call of
October 9, we herewith inform you that of the type
914/6 Sportomatic we built a total of five cars for
experimental purposes.

Your car, which is a really rare one, was exported
to Sweden in February 1971.

In the hope of thus having been of some assistance
to you, we remain,

Sincerly,

Dr. Ing. h.c.F.Porsche
Aktiengesellschaft
Public Relations - Sports
i.V.

J├╝rgen Barth

Porsche Panorama, October 1995, Page 84
"Gacek's 1993 certificate of authenticity from the factory indicates that there were 21 Sportomatics built in the 1971 model year" "An inquiry was directed to Porsche North America to confirm the correctness of these numbers and to shed some light on the 914/6 Sportomatic quantities. PCNA's answer was that there were, in fact, 21 914/6 Sportomatic cars built in the 1971 model year plus another four cars built in the 1970 model year for an overall total of 25 cars." "The majority of 914/6 Sportomatics went to European customers and it is not known how many are currently in the United States."

Posted by: SirAndy Aug 14 2017, 01:41 PM

QUOTE(burton73 @ Aug 14 2017, 12:03 PM) *
we herewith inform you that of the type 914/6 Sportomatic we built a total of five cars for experimental purposes.

Not this again ... headbang.gif

I personally have over 15 VINs of 914s that came with sporto. Please don't perpetuate that 5 cars only myth.
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Posted by: injunmort Aug 14 2017, 05:12 PM

i thought only the/6 had sporto's. i dont know about 22k for one. i will sell the whole thing (pedal cluster, shifter, servo, harness, trans, linkage, oil tank and lines, etc.) for $1250.00. i dont see why it would not work on a /4. its just a 901 box.

Posted by: Mueller Aug 14 2017, 05:57 PM

Seen a /6 Sporto in France years ago.


Posted by: mb911 Aug 14 2017, 05:59 PM

QUOTE(injunmort @ Aug 14 2017, 03:12 PM) *

i thought only the/6 had sporto's. i dont know about 22k for one. i will sell the whole thing (pedal cluster, shifter, servo, harness, trans, linkage, oil tank and lines, etc.) for $1250.00. i dont see why it would not work on a /4. its just a 901 box.



Becuase of the pump that is driven off of the cam on a six. You would need to figure that out for a 4.

Posted by: injunmort Aug 14 2017, 07:00 PM

i dont know much about them, where is the pump located? what does the pump do? in researching using the engine in a conversion there is no mention of a pump. i know the oil tank is larger to accomodate the extra fluid for the torque converter, but have seen nothing on a cam driven pump.





/

Posted by: mb911 Aug 14 2017, 07:04 PM

QUOTE(injunmort @ Aug 14 2017, 05:00 PM) *

i dont know much about them, where is the pump located?



Its driven off the cam off of the cam tower.

Posted by: injunmort Aug 14 2017, 07:18 PM

PET does not show it for the 905. i will have to look at the car tomorrow. it does show a vacuum tank. perhaps the pump is on later versions of the sporto?

Posted by: Dave_Darling Aug 15 2017, 11:46 AM

QUOTE(SirAndy @ Aug 14 2017, 12:41 PM) *

QUOTE(burton73 @ Aug 14 2017, 12:03 PM) *
we herewith inform you that of the type 914/6 Sportomatic we built a total of five cars for experimental purposes.

Not this again ...


Note that the rest of the info from Pano is also in the post, saying 25 were made.

It does show that it is difficult to get consistent info about these cars from when they were made.


I don't believe the totals count the one Six Sporto prototype that we know of in Germany. Nor does it count the four-cylinder Sporto prototype that we have heard rumors about but not seen actual documentation of.

I have seen two 914-6 Sporto cars so far. There was a silver one at the Partsheaven swap back when they were on Winton, before they moved to their present location. (Yes, that was a long time ago!) There was an orange or red one more recently, I think at Parade one year?

--DD

Posted by: injunmort Aug 15 2017, 12:13 PM

after a little more research, the 914/6 the clutch servo vacuum is operated by a vaccuum cannister from the intake manifold. according to pet, different manifolds for sporto. there is a cannister for sale on ebay for $195.00. the 911 is operated by pump off camshaft. setting the sporto up as a 914/6 application on a 914/4 does not look difficult unless i am missing something.

Posted by: burton73 Aug 15 2017, 05:40 PM

Georges Sportomatic at AA

1971 Porsche 914-6 Sportomatic. These pictures are interesting. I have never seen the shifter or brake pedal or rear of car.

No contest here just showing our members.

Bob B
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253]Attached Image

Posted by: DM_2000 Aug 16 2017, 05:49 PM

I came across this site while searching for Celette frame machine info for a non Porsche project. In the 90's got my 914 and I was on Renn list when John D started it from the left overs of an e mailing list. Maybe Porsche list?

In the early days, you would have your e mail address added to a list on a server, other users would send an e mail to the server then it would rebroadcast to all users either in real time or once daily. One could also request a list of subjects or a certain days mailings.

Anyway. . . . In the early 80's I actually drove a Sporto a short distance ( parking lot to shop ), I'm not sure if it was a 6 because there were 2 other customer cars that were a 4. Given the posts here, I'd say it was a 6. One of the mechanics thought I'd be confused by no clutch pedal but they were unaware that I was familiar with the VW sporto so there was no drama. I also knew arcane things like that a SAAB 99 / 900 had a hood that popped up in the front / slid forward then tilted forward and the ignition key was in the floor.

The VW sporto was 3 speed with a torque converter, the 914 has 4. Power flow was engine - torque converter - dry plate clutch - "standard" trans gearbox so this is a semi auto where one has to shift but not manually clutch.

The shift lever had a spring and electrical contacts at the base. When you pulled on the shifter the contacts made, actuated a vacuum valve that opened the clutch ( like pressing the clutch pedal ) , as you continued to move the shifter, the proper gear was selected. Let go of the shifter, vacuum valve closes ( with a short delay ) and the shift is complete.

The torque converter allows the car to remain in gear while not moving so you could start out in top gear if you wanted to. This was very slow and could overheat the converter fluid. ( VW had an over temp light, Porsche likely did also )

There is a torque converter charging pump run by a second stage on the Type I VW oil pump that draws ATF from a 911 dry sump looking tank. It would be possible to add a belt driven charge pump it you really wanted some sort of conversion.

The most direct route to a 914 auto might be a 73 ish to 81 ish Type 2 VW Bus conventional full auto as these came attached to the type 4 / 914 motor. However. . . The trans is facing the wrong direction. It _might_ be possible to flip the ring gear but most likely the trans would need to be flipped with lots of custom stuff. I'd probable try to flip the final drive housing then report / add external lines to the transmission portion. ( the final drive and trans were 2 separate units. )

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