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Russ

The Sportomatic Thread!

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okay, so it's time for the SDL (Sportomatic Defence League - which I think consists of SteveF and myself) to have a thread for the love of all things Sportomatic, In line with the Tiptronic thread

 

Manual Cover for Sportomatic (before it was an additional page or 2 in the owners manual)

Sportomatic001.jpg

 

Diagram of how Sportomatic works (missing the coverage of the microswitch in the base of the gearstick to actuate the clutch):

Sportomatic-diagram.jpg

 

It did once win a race too! So you can't say it's not a real Porsche! - The 1967 Marathon De La Route, a 911R Sportomatic with Vic Elford driving (the current whereabouts are discussed here - http://www.early911sregistry.org/forums/showthread.php?67230-Sportomatic-911R-Whereabouts&s=90702095ecc5ddfc9d2b49858bc0a040):

NH567PG.gif

 

and below are the videos that got me into my car in the first place (I watched all these the night before I bid on my car)

 

https://www.youtube.com/watch?v=Vhv5ITsVHLQ

https://www.youtube.com/watch?v=Pd_KA93bGe4

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https://www.youtube.com/watch?v=McOGJdc7hmM

https://www.youtube.com/watch?v=7cNXnwsPMoY

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My dad had a '76 semi automatic beetle for a while, It was great fun to drive - it's running around in a light green with an oval window grafted into it

 

The best thing about the VW system is that it's compatible with the 905 Sportomatic (180mm clutch - the 4 speed in earlier cars based on the 901) Unfortunately the later model 925 Sportomatic (3 speed, based on the 915 is a 190mm clutch and hard to find now)

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I wonder if the price is just because it's a very nice long hood (or if the Sportomatic box adds/detracts from the price)

 

Will be interesting to watch in the next 5 years I think with originality being the 'in' thing. I was reading somewhere that only 2% of 911's were Sportomatic (I wonder what that number is now after a lot of them have been converted)

 

Must be because it's a Targa .....   :rolleyes:

 
Can we please keep this thread to constructive information about Sportomatics?

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I wonder if the price is just because it's a very nice long hood (or if the Sportomatic box adds/detracts from the price)

 

Will be interesting to watch in the next 5 years I think with originality being the 'in' thing. I was reading somewhere that only 2% of 911's were Sportomatic (I wonder what that number is now after a lot of them have been converted)

Contrary to the fun both me and other members here make of the Sporto's, I honestly find them a unique part of not only Porsche history, but automotive history .....

I've always been one for originality and for keeping things as "the factory" intended .... and while I understand why some owners change them to a 915 box, it's a shame they are being made obselete through this change..... I think that you may be right that "one day" they will be sought after as a special slice of Porsche history .....

As Forest Gump so famously said ..... that's all I have to say about that .....

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925+12_3+Speed011293473567.jpg

 

This says alot about how highly geared a Sportomatic is - 55mph in L (first) at red line (6200RPM)!

 

The above pic is from an awesome post from 'GradyClay' in this thread on Pelican:

http://forums.pelicanparts.com/porsche-911-technical-forum/456154-4-speed-925-sportomatic.html

 

Also interesting to note is this - Sportomatic Carrera's!

925/02; ’74, ’75; 911S, 911 Carrera; 15:36(C,2), 20:31(I,3), 24:27(Q,4-5), 28:23(Y,4-5); 7:27; 1750 – 2150 rpm; 1.7:1 – 1.9:1, ~3080±200 rpm.

 

925/13; ’76 RoW Carrera 2.7, 3.0 MFI 3-speed; 15:36(C,2), 21:30(K,3), 27:25(V,4-5); 8:27; 1900±200 rpm; 1.8:1; 3200±200 rpm.

 

925/16; ’77 RoW Carrera 3.0 3-speed (used through ’80 911SC worldwide); 15:36(C,2), 21:30(K,3), 27:25(V,4-5); 8:27; 1900±200 rpm; 1.8:1; 3200±200 rpm.

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Perhaps you might be interested in buying a sportomatic 'based' T-shirt I (with some assistance from FlatSix) designed? lol

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 The above pic is from an awesome post from 'GradyClay' in this thread on Pelican:

http://forums.pelicanparts.com/porsche-911-technical-forum/456154-4-speed-925-sportomatic.html

 

You will see a post here from Peter (f3nr15), who owned my car previously, that it was converted from the original 3 speed to a 4 speed.

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Hang on...that says just put it into 'D' for drive.  How does that work?  Does it just stick it in second and let the torque converter do all the lugging?  I thought they were just a clutch less manual?  Educate me, clutch less ones.

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it's a manual gearbox, behind a clutch and a torque converter, the clutch is vacuum operated by a micro switch on the gearstick.

 

The torque converter is in the bell housing, the bell housing then comes off and the clutch is behind that

sporto_trans1125086306.jpg

 

you still have to change gears like a normal manual (OR you can drive around in D all the time but it's not fast) and just stop at traffic lights and drive off in gear. 

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I find that around town I generally use D (where second gear sits on the gear stick) and D1 (3rd). I only really use L (1st) when starting off on hills and D2 on the freeway. The trick is to time the gear change as sometimes I find that the clutch disengages quickly whereas other times not. A year on I am still getting used to this car but loving every minute of it.

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