On Sun, 23 Jan 2000, Carson Clark wrote: > BAE Turbo charger, I have not had my car on a dyno yet but Don said he > thought it was putting out around 200hp. I have driven the stock cars Ahh, turbos - my second favorite topic, after engine swaps <g> I bet it's closer to 170hp. That seems to be about what other turbo engines @6psi produce on a dyno. When you think about it, it's really quite impossible for a turbo at 6 psi to produce more than 183 HP. 6 PSI is at most a 41% increase in air over naturally aspirated and 130HP * 1.41 is 183 HP. In practice, increased heat will reduce the density of the air which means a little bit of power loss. > boost from the turbo. He told me that if he could increase my boost > (which is a modest 6psi) to around 14 psi he would DOUBLE the > horsepower output from my engine. Don was talking about possibly Sort of. Such a setup will require an intercooler. I don't think you should go over 8 or maybe 9 psi max without an intercooler. At high boost levels without an intercooler, the heat produced by the turbo combined with the heat from compression will raise the temperature of the air/fuel mixture too high resulting in preignition, and that's bad news. Just say no to preignition. :} As you said, a fuel increase will be required too. I'd also suggest an ignition amplifier. Bob Brandys found with his dyno day that at high RPM the fuel just wasn't getting lit. These are fairly inexpensive devices that can produce the spark to end all sparks. Maybe some more recent plugs can be adapted too. There have been improvements in spark plug design (and I'm not talking splitfires and other gimmicks here) over the past 20 years or so. It's not at all uncommon for spark plugs from a newer version of the same or similar engine to fit right in and outperform the old plugs in all respects. It is likely that a Bosch fuel injection system from a modern turbocharged car will have injectors that will be compatible with the DMC. Bigger fuel injectors can allow more fuel to be delivered. I'd start by looking at injectors from a Volvo 850-T5 or S80. These cars have engines approximately the same size as a DMC and with approximately the HP output you're looking for. You'll need a higher performance fuel pump also. At 14PSI of boost, with fuel upgrades and a good intercooler and an ignition amplifier, you could conceivably get about 240HP (even with an intercooler, returns drop as boost increases). Finally, your single BAE turbo might be too small. A turbo that produces 6 PSI with little lag just by its nature isn't going to be a turbo that can also produce 14 PSI efficiently. But if you solved these problems and added DMC-Houston's new headwork to the mix, you could be looking at as much as 300HP. We don't need no stinkin' engine swaps. :} > league as Corvettes, or mustangs, but it is 'peppy' with 0-60 times > probably in the high 7 second range (and i am only guessing). That's a reasonable guess. Not Corvette territory, but at least you won't have to worry about that minivan in the next lane. :}