OK here is my question.
I have a 95' 993 that I have had for 3 years and am looking for a little more power. 993 turbos are almost considerable now with regards to price however...
I have found a 79' 930 that has been very well put together with approx 400 rwhp on pump fuel. It has an 80's custom 3.3 twin plug and twin turbo set up the bost setting is set for approx 1 bar and bost appears to come on at 4k RPM and I took it up to 6K rpm the grin factor was unreal this thing pulled like nothing I have ever felt before and the tires were breaking loose none the less.
I feel as though the usable power range is very limited with this current set up.
It felt as if there was very limited low end torque and was wondering if this was a "normal" thing for a 3.3 930?
Any and all thoughts are encouraged.
Brian

 

The factory gear ratios and the 4spd are a contributing factor as to why the car feels like it doesn't have torque at the low end.

 

sorry I forot..G-50

 

I'll be honest, I love the 930 turbo cars, but there is a lot to be said of the newer chassis, they are THAT much better. Unfortuantely they come with a price - weight. You haven't mentioned what you like about each, or your intended usage. The 993 is going to be a MUCH better everyday car due to the 20+ years of improvements. I've seen 993tt engines and transmissions go for 10-14k and you might consider having one transplanted into your 993 if you really want turbo power. Your current engine is a 7-9k piece of equipment when sold complete. You'll can easily spend 10k on a 930 addressing limitations of the older design which is probably what you'd have into the conversion.

 

I like everything about the 993 except the lack or "raw" power. I have it set up with Eibach and Koni's M030 sway bars and have chipped it and it handles wonderfully.
As for the 930 I believe everything has been already done that would need addressing.
Rear coil overs/ spring plate/mono ball/big reds
The type of driving would be mostly weekend romps in the back country and the occassional DE weekend at the track.
Now for pricing thoughts....what do you think a 79' 930 is worth giving it a 9 rating all around cosmetic wise and 14k on a heavily modded 3.3 twin plug twin turbo is worth?

 

"As for the 930 I believe everything has been already done that would need addressing."

Yea, we were all there once too...

 

To be honest I would not pay any more than a stock 930. I also think for a TT setup boost should be coming on earlier.

I think if i were you I would modify the 993 since you seem to have put a lot of energy into it already. I know were you can get Big blacks for $150 ea. (Big reds painted BlacK) And droping a tt motor or even reworking your engine can give you a bit more grunt and a bigger grin.

Good Luck

 

Brian,
With my single turbo setup, and using a K29, I get full boost at 3200revs. Now with your twin turbo setup and I'm sure it's EFI, you should be on full boost earlier, please correct me if I'm wrong. I would look more into this car as in documentations, how often it's been tracked, who and when was the last engine rebuilt, what went into it. Drive the car and see how you feel. We guys can tell you all sorts of good and bad things but you have to drive it and see how you feel. Whatever your choice, you are more than welcomed to share with us your doubts. JMHO.

 

If you have the cash for a 993TT, that would be the way to go - unless you are just totally with the styling of the older turbos. In that case, buying someone else's upgrades can get you a lot of performance for little dollars. It is hard to value, but no more than $30K for a mechanically and cosmetically perfect car.

The 993TT has many possibilities for modifications so it offers a much better platform for getting the complete car. A '79 turbo is going to continue to present challenges - after all it is a 26 year old vehicle. Even with its coilovers and G-50, I doubt it could stay with a 993TT on the track. Modify that 993TT and there is no contest.

Sameer:
I would like to see your dyno run that shows you are at full boost at 3200 rpm with a K-29.

I agree that if this motor is a TT, it should be coming on boost much earlier than 4000 - something is not right there.

 

Jeffrey,
I've not done a dyno run yet but will do so when the cars out of the paintshop.

Reason I said I get full boost at 3200 revs, I saw it for myself a few times and had a friend sit next to me to see when I get full boost so I could keep my eyes on the road. It's not exactly 3200 revs but somewhere in the 3200-3300 rpm range that much I know for sure. The K29 I got it off Ruf with some internals done to it. They called it the K29 hybrid.

 

I hate to tell you all this, but even though it is a 26 year old car, I believe it still looks much nastier and drives with a raw race car sense. I had the opportunity to buy a tt 993, but I opted for the 930. I love the lines and the look, plus I enjoy having to control the beast within. That is my two cents. BTW, $30K is way short for a heavily moded car. Somewhere near $40 is about right.

 

Just another .02 worth. If you are going to spend about 40k you can pick up a nice 30-40k mile stock 91 or 92 turbo probably with original paint and like new condition. For a little bit more you add a HF turbo and complete exhaust and you will be at about 320 rwhp. The car will be half the age and although you are loosing 80hp at the wheels the car will give you all the excitement you need and probably retain its value longer. Besides it will be similar with some modern conveniences you are accustomed to having in the 993.

 

Thanks for everything so far!!!
I have talked to the guy again and we are going out this weekend to do a 50-75 mile drive in the back country and see if this is somthing we want to do. I havn't yet gotten to read the build sheet for the motor but after I do I will post a more thorough mod list. My only concern at this point is when the boost appears to kick in. Would I need to go to smaller turbos in order to allow the boost to kick in earlier? I think that is how a turbo works regarding rotating mass but I am not 100% sure. I know there is some way to manipulate the mapping program with a laptop but I am not really sure what this entails so....regardless I really WANT this car I will post pics Sat PM when we get back and hopefully we can strike a deal.
Again any and all thoughts are welcome.
Brian

 

I dont believe age has anything to do with it. Sometimes a visceral feeling is all you need. Maybe that RAW gut driving sensation is excitment. Plus the older car looks real bad ***. That setup isnt going to be too far off and is worth around $40K IMHO. Good Luck. Let us know how it goes.

 

Stay with your 993,better all around car,cheers,Sonny.