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924/931/944/951/968 Forum Porsche 924, 924S, 931, 944, 944S, 944S2, 951, and 968 discussion, how-to guides, and technical help. (1976-1995)
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How much tougher is the transmission in a 951 than in a 944 NA?

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Old 04-17-2016, 12:40 PM
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lart951
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Originally Posted by odurandina
The 944T transmissions have performed flawlessly for 30 years.
You noobs, I was breaking transmissions when you were barely 12 years old


https://rennlist.com/forums/944-turb...anny-asap.html
Old 04-17-2016, 12:40 PM
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The RX8 is a few hundred pounds heavier than a 944. and the engine in the RX8 is lighter tahn the 944 engine, so the IC enginectomy won't provide the same net/net as losing the 944 engine.

A few hundred pounds is actually pretty significant in this game.... probably determinative.
Old 04-17-2016, 12:44 PM
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Originally Posted by Thaddeus
They have a blog or thread anywhere?
I got his phone # it was a 10sec 1/4 mile car but he didn't use the 944 transmission.

I sold him this car

Old 04-17-2016, 02:22 PM
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Depending on how hard you bring on the torque a 944S, S2, or Turbo could work, all have stronger transmissions than the NA. The S is the weakest of the larger case design followed by the S2/Turbo and then the Turbo S.

The S2/turbo would be my choice as they have better aero than the NA/S while getting you the ABS and airbags you're looking for. The S2 is geared shorter than the turbo if that matters for your project. Look into the boxster ABS mod for these as it significantly improves ABS functionality.
Old 04-17-2016, 02:53 PM
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I thought the S2 (AOS) had the hardened 1/2 gears, like the turbo S? (AOR)
Old 04-17-2016, 03:08 PM
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Originally Posted by odonnell
I thought the S2 (AOS) had the hardened 1/2 gears, like the turbo S? (AOR)
that seems to be correct
Old 04-18-2016, 03:49 PM
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If weight matters more than airbags, an early N/A or 924S with a trans swap is probably the way to go. If you aren't going to use the hardened gears on the AOR trans anyway (because electric torque) you may as well go the cheaper route with a regular turbo trans, or even just start with an N/A and see how it goes. You may end up just leaving it in 3rd or 4th gear, which is an odd application that won't correlate with most of our experience, and N/A trans are super cheap.
Old 04-18-2016, 08:18 PM
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Studying the torque curves on the most likely motors, I'll probably be using 2d and 4th almost exclusively. 1st would shred tires...
Old 04-19-2016, 10:26 PM
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Here's a car somebody converted (is converting?) but only put 100 miles on since...

http://www.diyelectriccar.com/forums...5k-162817.html

That thing is riding way too low in back. Right choice of light batteries too, it makes me wonder if the 951 is the right candidate for this. That weight has got to be redistributed... but where else would you put the batteries? Not really good choices left.
Old 04-20-2016, 04:11 PM
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Originally Posted by Thaddeus
Here's a car somebody converted (is converting?) but only put 100 miles on since...

http://www.diyelectriccar.com/forums...5k-162817.html

That thing is riding way too low in back. Right choice of light batteries too, it makes me wonder if the 951 is the right candidate for this. That weight has got to be redistributed... but where else would you put the batteries? Not really good choices left.
Relocate as many as you can to the engine compartment. You should have plenty of room for them. They probably didn't uprate the T-bars in that car either, the stock 24mm wouldn't be enough, you can go all the way up to a 30mm bar to help with that load.
Old 04-20-2016, 04:45 PM
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It'll just handle like a 911, what's the problem?
Old 04-30-2016, 08:32 AM
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Well, I'm calling halt to this idea. The sticking point, as always, is battery placement and weight.

I can't figure out a way to put enough batteries in a 944 chassis to make it scream the way it should without hanging too much weight out behind the rear axle and destroying the handling.

The best engineering solution is to have the batteries underneath and amidships, and there's no way to do that in a 944 retrofit with any available aftermarket cells.

Good design exercise, but there won't be an electric 944 coming out of it. Oh well.



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