924Board.org

[Glen931]

I have been reading this board for a couple months to get info on my 931. Here is the deal, I bought a beige 931 with 85k miles, manual tranny, leather, in fairly nice condition for $800(highway robbery) about 4 months ago. I have put a couple hundred bucks into the car since i got it. its almost stock except for 2.5" exhaust with a magnaflow and no cat, a free flowing knn air filter and some decent rubber.

I am a college man studieng mechanical engineering so i dont have any money for an intercooler yet. infact i cant even afford a boost gague for it. Iv been building and drag racing a ford fairmont station wagon for 3 years now and it has a 2.3 Turbo Running 22psi and laying about 260 rear wheel HP. I know a decent amount about mechanics and turbochargers but I am a newbie when it comes to Porsche. I love my 931, it hangs on to the road like nothing i have ever driven. the syncros are shot is its only porblem.
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"Nitrous is like a hot chick with an STD, you know you want to hit it, but you are afraid of the consequences"

1980 porsche 931 beige
1987 Porsche 951 red, 51kmiles.. prefect cond.
1978 ford fairmont wagon 2.3 turbo engine

[CMXXXI]

Willkommen !!
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'79 Eurospec 931

[Peter_in_AU]

You've come to the right place for good advice on fixing up and maintaining your new toy for minimum dollars.

Welcome.
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1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you

[ideola]

Welcome aboard! You will not regret your time spent here.
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erstwhile owner of just about every 924 variant ever made

[924guy]

congrats on a fine choice of machine, and welcome to the club..

I dont think ive even heard the word "fairmount" since i took my ex's to the scrap yard (long story, but it was near show room condition, under 30k miles, and like 10-12 years old at the time, when i junked it, and sent her pictures of it being crushed after she basically stole my t-bird. never mess with a mans car... ) I still laugh an evil laugh when i think about it, and it was a good 10 years ago or so....
But i always thought theyd make good drag racers, they can be made feather light and will take a fair amount of torque with a few light mods..
anyhow, welcome aboard, dont forget to udate your profile with a location, there might be other 924/931 owners nearby to hook up with...
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha

[-nick]

A hearty welcome from here too. Since you're complaining about syncros already, I'll presume you have an '80 model! Sounds like you really got a steal if you picked it up for $800. Pics are always welcome!

924guy- dude, you are evil! I now know to never mess with you

nick

[Glen931]

Yeah the fairmont is still full weight but will be gutted as soon as i have eanugh free time. it is no longet my daily driver since i got the 931. Yes it is a 1980. Are the later models trannies better? I live in Grants Pass Oregon if anyone was wondering. i thought i put it in my profile. there is a very good used porsche/VW parts dealer about 4 hours from here that is selling off everything in the next 6 months. Its called parts obsolete(or how ever you spell it) I will be looking for a new transmission and maybe some other good parts. 944 intercooler exetra. I will be coming into some money soon and will be able to get a boost gague at the very least as well as build a home depot boost controller. I run 92 octane all the time, even on the stock boost. I was thinking of raising it to the 12psi range once i get a boost gague so i can correctly adjust it. I live at high altitude and its usually pretty cold here so i could probobly get away with more boost without detonation but ill play it safe. parts for the 931 are a little harder to come by and a little more expensive that my ford.

One question. I assume that all the 931 transmissions are compatable? can i use one off a later model 931? also is there a differance between the turbo and N/A transmissions?

And yes I did ge a steal on the car. i bought it from a 70 year old man who had no clue what a turbo was. all he know was to put in at least 89 octane. the car was well mantianed witl all of the origingal parts manuals and porsche tool kit which came in handy for a 9pm spark plug change in front of the parts store.
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"Nitrous is like a hot chick with an STD, you know you want to hit it, but you are afraid of the consequences"

1980 porsche 931 beige
1987 Porsche 951 red, 51kmiles.. prefect cond.
1978 ford fairmont wagon 2.3 turbo engine

[MunkPuppy]

Well, the 931 G31 (snailshell) and Audi transmissions are compatible, but it is by no means a direct swap. Basically, everything behind the flywheel must be swapped, since the torque tube and shifter are also different. The drive axles are the same, however.
You can also swap in a 944 trans from 83-86 model.
The 924 and 931 trannys are not interchangable, however, as the 931 driveshaft is 5mm larger to handle the increased power of the turbo engine.

I personally have not done this swap myself, but I know there are a few members who have. Hopefully they will speak up and be able to give you any advice you may need.
Personally, I am going to keep my snailshell and rebuild it myself, unless it is completely unaffordable to do so. My main reasons are that, even though the Audi trans is much easier to find and parts are eaier to find, the snailshell weghs less, can handle more power, and is also said to shift better than the Audi unit.
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'80 931 FOR SALE

"It's a shame that stupidity isn't painful"
-Anton Szandor LaVey