 Can a sportomatic tranny handle the higher hp motors?, Any know it alls out there? |
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| funk |
 Jun 24 2017, 11:47 PM
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#1
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Member  Group: Members Posts: 100 Joined: 23-June 14 From: sandpoint idaho Member No.: 17,531 Region Association: Pacific Northwest  |
I know the sporto was made for a 2.0 flat six and I have heard varying reviews to the enjoy ability and more so performance. some saying it made a dud out of certain models?
I know sacrilege to the beast? so it made me thing how a sporto would be to drive with say a 2.7 s all ported out and outperforming any of the stock touring sixes but would you have to heavily modify the tranny and such? This must be where LSD and such come in handy? I have nerve damage in my feet so clutching it is getting painful to say the least?just looking for opinions and knowledge? thanks,Jo |
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Replies(1 - 6)
| funk |
Jun 25 2017, 12:17 AM
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#2
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Member Group: Members Posts: 100 Joined: 23-June 14 From: sandpoint idaho Member No.: 17,531 Region Association: Pacific Northwest |
well I just answered my question. I see that there are factory 2.7 s with sportos? but how do they perform? I couldn't find a 3.0 from factory with sportos I think once the 3.0 came out it was a new ball game for the transmissions?
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| Gustl |
Jun 25 2017, 01:42 AM
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#3
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914 enthusiast & historian Group: Members Posts: 11,858 Joined: 16-June 04 From: TIROL / Austria Member No.: 2,212 Region Association: Austria  |
The Sportomatic transmission was used from the factory from 1968 up to 1980.
So there are various types that would work with various engines (power). From my best knowledge, the 925/16 tranny would work with the highest power. |
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| flyer86d |
Jun 25 2017, 03:58 AM
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#4
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Member Group: Members Posts: 468 Joined: 12-January 11 From: Corea, Maine Member No.: 12,585 Region Association: North East States |
Two PCA members that I knew each had Sportomatic cars with larger engines. One had a 1977 european Carrera 3.0 Sportomatic. He changed the original 3 speed Sportomatic to an earlier 4 speed Sportomatic and autocrossed the car extensively. The other was a member with an early 3 liter 930 that he had changed to a Sportomatic. He tracked the car quite a bit.
Charlie |
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| infraredcalvin |
Jun 25 2017, 10:21 AM
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#5
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Distracted Member Group: Members Posts: 1,650 Joined: 25-August 08 From: Ladera Ranch, CA Member No.: 9,463 Region Association: Southern California 
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| stownsen914 |
Jun 25 2017, 08:21 PM
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#6
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Senior Member Group: Members Posts: 957 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
There are 901-based sportomatics and 915 based sportomatics. I suspect the torque limits would be similar to the trans on which there were based.
There was a guy back in the late 70s or early 80s who raced a sportomatic 911 in IMSA, believe it or not. I guess it can be done. Scott |
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| bdstone914 |
Jun 26 2017, 06:18 AM
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#7
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bdstone914 Group: Members Posts: 5,031 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
What engine are you running? Why would you want one? They are not popular with 911 guys. They require cooling which is handled through the oil tank on a 6.
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