I love 930's and there are many advantages to them but it is to easy to modify a 3.2 G50 Carrera that I would consider it as a viable possibility w a few advantages of its own.

First it has much better gear ratios w the five speed. Second it has better turbo cams already. Third it dose not have the small restrictive intake ports needed for good CIS Air Fuel mixing. Fourth, it is EFI so it has better fueling potential with less lag.

If I were to mod one stage one would be a low pressure blow through set up w a 930 exhaust and a custom turbo that is a bolt on. I would run an intercooler and .5 bar boost. Turn the fuel quality switch to retard the timing a bit and run a raising rate fuel pressure reg that increased fuel w boost for about 350+ Hp.

Stage two would be to keep the stock cylinders and run a set of Turbo J&E pistons w about 8/1 compression. Add an MSD ignition w boost retard feature and convert it to a suck through or a vac sensing style system. Add 944 Turbo injectors for over 400HP.

People would no know what hit them.

It is all fun.

http://newyork.craigslist.org/jsy/pts/849878575.html

I found this on craigslist. Whata you guys think??

What else would i need to get the car running with this set up?

There is some things that might be usable there.

Don't think the intercooler, heat exchangers, or the turbo are of much use.

Your heat exchangers are the same.

The goodies there is the J pipe (between the heat exchangers and turbo), wast gate, muffler, oil supply, and brackets.

Would have to know more about the turbo but you would likely go with a ball bearing that dose not require the oil flow of a K27.

For that much I would look into an after market header style exaust system or have ER convert a set of SSI's for turbo use.

Randy,

For the life of me I cannot comprehend why you continue to belabor the idea of swapping a G50 for a 915-based gearbox. Nobody in their right mind does this to lose weight. They accept the additional weight and look elsewhere for savings.

As far as the other ideas for gaining speed, yes, substantial weight loss is key. But it costs you quite a bit of convenience- something street car drivers may not be keen on. Complete A/C delete, windshield washer bottle removal, seat removal/swap, sound deadening removal, fiberglass body parts, stereo equip removal, all do add up. My car weighs 2500 with 1/2 tank of gas equipped in such a way. It's still plenty streetable. One can take it a step further and gut the interior, add a roll bar and you've got a formidable track car. There goes the streetability..........

For a car that has to maintain some sense of practicality/comfort, I think some basic weight loss, trans gearing and engine displacement are going to be your best bet. Piecemeal attempts like cams and a chip need to be approached as a complimenting system. Cams alone will do little- i've experienced that myself with my car.

'cuz the 915 FEELS like a Porsche

http://forums.pelicanparts.com/porsche-911-technical-forum/234974-did-hp-junkies-finally-died.html?highlight=juan+ruiz

Lemme guess, your car has a 915 Randy?!

mmn710, you can use all that stuff no problem (waste of time swapping the exchangers), all you need is a protomotive chip and some kind of rising rate fuel pressure regulator, you can go cheap and adjustable with the BEGI or plug and play but a little exy with the protomotive unit. Don't underestimate the ol K27, they can boogy and will easily create the boost you need and spool up pretty quick. Just run .5 bar and you wont need an intercooler for around 360hp, blow the doors of your mates car, ask me I know.

I loved my K27-7200 and it works great up to about 380 FWHP.

Not sure about using a first generation 76-89 930 turbo though.

3LDZ is original, K27s are an upgrade.

Plenty turbo for .5 bar, turbos are barely spinning at that, the wastegate opens very early.

Curious to know what your speed (mph) was when you topped out in 4th gear. My 86 carrera does 100mph in 3rd gear with still a little more rpm to go, can't imagine what speed I'd be going topped out in 4th or even 5th gear would be. Who cares if you can or can't beat a z you will look better just driving a Porsche. I've driven lots of hot cars but I've got more "nice car" compliments since I've owned my Porsche than all the others combined. So there's really no need to drive fast enough to beat a z car.

Ya our cars are very good looking cars. Just wanted to have some fun playing around with my friends Z.

I think im just gonna go with the weight saving side for now then when i get more money ill play around with some boost just hoping i don't break anything haha.

As for my speed at the end of 4th i don't really know what it was and I don't wanna haha. It was very dumb but I was in that mode where I had to beat him once i was ahead of him and I didn't wanna let go haha. Trust me I wouldn't be pulling that again.

I actually got video of it...I gotta get my friend to send it to me

Just thought this was worth repeating. I have heard that the effect is like a 50 HP boost.

+1 on gears.

If you look at a gear chart and the rpm drops between shifts and compair it against an HP chart you can see that you can operate at a much higher average HP with gears. Think of that pull you get when we come on cam in a gear all the time when accelerating.

It might be a bit expensive to do gears on a G50. Only a guess but about $4k plus then add for a limited slip diff. You would want the LSD any way.

A packaged low boost turbo conversion is about $6k and makes the current ratios perfect.

However, I would buy a used Porsche w gears and would pay extra but would not touch a used Turbo conversion car. ;)

hmmmm.... 915, anyone?

Apparently you haven't pursued regearing a 915. If you think 915 close ratio gears are markedly cheaper than G50? Keep dreamin'. :D Regearing of any Porsche 911 transaxle costs a small fortune, even if you DIY it. Porsche gears are not cheap, period.

agree not cheap - but the ease of finding a good used 915 gear is >>> same for G50

And the G50 dose not so much need aux. cooling compaired to a 915.

Turbos make for lousy drag cars.....ask me how I know :D
For performance from a standing start, do like Steve W. says, go with a close-ratio 'box.
If money is no object, build an ITB 3.9 motor and drop it in a 2100 lb. car.

True. But cooling is good for any trans if it sees track use. More importantly, the G50 transaxles prove their superiority durability-wise as evidenced by the lack of G50 rebuilding posts on this board. You won't find a whole lot of documentation on G50 worn synchros/dog teeth, stuck in reverse or complete rebuilds because the transaxles don't require it as much as the 915. 915 may have better feel and may be lighter, but the G50 gearbox itself (original clutch operating system aside) has the upper hand in durability without question.

If you want to make your G50 3.2 faster, it's the same as any other car. Do the following in order of cost/benefit ratio:

Lose weight
Fiddle with cam, exhaust and chip combinations
Bolt on a turbo kit
Increase engine displacement
Remap gear stack
Buy a C5 corvette Z06

Dang, I could of had a V8!

;)