CanyonBlaster

I like my TPC car. Fun to have a bit more low end.

TheOtherEric

It sounds like you're saying that turbos mix exhaust gas with intake air, causing the boosted air to be hotter. I hope not, because that would be dead wrong. Just to clarify...there's no mixing. Turbos take in cold air exactly like superchargers. Yes, exactly the same.

Turbos are generally much more efficient at boosting air pressure by design. So a roots-type s/c will run around 50% efficiency and a turbo around 70%. (see Corky's book). So the compression process is more efficient in turbos. However, the body of the turbo can get warm due to exhaust gases nearby, but how much of the exhaust heat transfers thru the case and into the clean side's air? Better find a turbo expert to answer that one. Or grab onto your turbo's cold side and see if it's hot. Please report the findings!

In the end, both cause heating of the air, and both need intercooling for sporty / track driving. Lotus doesn't intercool their supercharged Elise, and guess what... they heat soak at the track.

psiegel

Ok, I don't know which system is better, hotter, colder,etc, I am not sure that in the end it really matters as long as the driver has a huge smile and gets what they want out of there car. I can only tell you all that my C4 with a Protomotive turbo system is an amazing car to drive year round and if SC cars as much fun, than thats great for those owners and they are blessed as well. If you are thinking about a 996 and like the drive as much as the 964 than why not. I am asked often, why not by a 965 rather than turbo a 964 and the answer is the same for a SC 964. No 964 C4. Why not buy a newer 911. What and not drive a really fast 964. there is nothing better, ok not much better. People also ask what its like driving one of our cars. I can relate it to a great pair of skis, Fast, responsive and faster yet out of the turns and it will do anything I ask. ok, so the turbo gets hot, so what. I have now driven the car with the turbo over 50,000 miles, just finished a 4,500 trip from Colorado to N.Y to N.C and back with no issues except for the 993,996 and 997 that were pissed that they couldn't keep up when they thought they should. Now thats fun

stahwille

I can only speak from 30 years Porsche service , Personally i'd pony up for a porsche twin turbo. I'ts a buyers market, and when its all done you own a Porsche with serial # , brakes, and Porsche design power unit . (just in case you ever sell ) Good luck Stahwille

N51

Hi Peter,

You're out of the mainstream of our, now quiet, forum experts. Your car is a fluke. :-)

Sounds like a great trip!

Best,

jim_l

I thought i read you needed to lower the compression before install a turbo.

wellcraft290

not on a stage one you don't need to lower compression only on a high boost. with low boost stock engine and no intercooler you can get 400 hp very safely.

ilko

Just clicked this thread again and saw that my name is part of the tags at the bottom of the page. I must be famous

964speed

You made it to the big times now!