Yup exactly, if those are stock turbos on a 3.8. Could you go into detail on your setup? JayC
That setup was supposed to be a prototype for a production twin turbo kit that Charged Air Systems did about 7 years ago. I pulled an all nighter to put it on and we took the car to the track the next day untuned and unloaded the crank out of the bottom of the oilpan. Too much boost I guess on a motor that had a lot of passes already.
That kit had problems. For starters, the swingvalve wastegate is NOT the way to go. It's too hard to get the turbos set up the same. Also, trying to run a downpipe down the driver side is tough.. there isn't much room in there. Plus to keep AC and stuff, which was the original intention, I'm not sure that configuration would work.
After we took the kit off and sent it back to Tony, he sent it to another tester that ran some 6.40s in the 1/8th mile with it. I think Turbo Archie has the kit now.. or what's left of it.
Far as advantages, there are several. First, it's easy to spool.. maybe too easy. I watched with my own two eyes as a set of 29x10.5 slicks get boiled for several hundred feet at Texas Motorplex. Course, we had a 4000 stall converter in the car for the big single that was on it before so that setup likely needed a 2800 or so... maybe even a stock converter.
Also, stock turbos, like someone mentioned, are a dime a dozen. Even new, I think you could buy a pair for about $700.00, probably cheaper if someone really worked to source them out.
Next, you remove any chance of exhaust pulse reverb by splitting the two exhaust banks. Trying to run twins when you remerge both sides like Ken did doesn't accomplish that but I don't have any quantifiable gains for doing it so it may be negligible.
Here's something to think about tho. If you took the kit and bolted it on a stock care and did nothing but upgrade the fuel system, how much horsepower do you think you'd pick up? That's the true beauty of this. You're talking about taking a stock car and probably going from 13s down to low 11s for spending maybe a day and a half bolting stuff on. Granted you can accomplish the same thing by buying all your own parts, converter, etc but you gotta source everything, order it, get it all in and figure out how to fit it all together. I want to see a kit for a TRUE street car that can be installed without any grief by just about anyone that puts a stock car in the mid-low 11s when done.
I've tried and tried to get this kit done for years. I've had problems getting donor cars to use for fabrication, finding people who actually had the skill to do it, etc. We've got one in the works now that I hope we're going to be able to mass produce and sell. The kit is done to my specs and solves all the problems the first generation kit I did with DeQuick had. Actually the first generation kit (The one above) shouldn't have had the problems it did but DeQuick took a lot of creative license with my ideas so things didn't quite work out the way I intended.