I was researching pros and cons of turbocharged vehicles and stumbled across a very helpful site [email protected]
I learned a great deal from it maybe someone else on here can to
I learned a great deal from it maybe someone else on here can to
Helpful link on turbos
- Thread starter 94mustangv67037
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yea it was a pretty ridiculous thought in the first place but im on the right track now and hotstang and i worked out our differences so all is good now
That's a reasonably good collection of information for a starting point, but there are a few mistakes and untrue statements. Here is the first one that jumped out at me:
Not really... turbo lag is the result of two factors: insufficient airflow to spin the turbo fast enough, and inertia of the rotating parts of the turbo. When you first spool up the turbo, at low rpms there isn't enough exhaust flow to get the turbo spinning fast enough to make boost. That is the traditional concept of turbo lag. As the author mentioned, you can also have lag between shifts. When you close the throttle plate, you cut off all the exhaust flow to the turbo, and the compressor slows down significantly to stop making boost. When you get back on the throttle after the shift, then you have to get the turbo spinning fast again, and it takes a moment to overcome the inertia of the turbo (change the speed from maybe 40,000 rpm to 100,000 rpm) and build up the airflow.
Turbos are great fun though! If you select the correct size, they can make huge torque in the mid range and efficient top end power. Compared to a centrifugal blower, a properly matched turbo can make more power everywhere for the given boost level, because it has a much higher efficiency. Compared to a positive displacement blower, the blower will always make more low end torque until the turbo gets spooled up, and then the turbo is more efficient.
Not really... turbo lag is the result of two factors: insufficient airflow to spin the turbo fast enough, and inertia of the rotating parts of the turbo. When you first spool up the turbo, at low rpms there isn't enough exhaust flow to get the turbo spinning fast enough to make boost. That is the traditional concept of turbo lag. As the author mentioned, you can also have lag between shifts. When you close the throttle plate, you cut off all the exhaust flow to the turbo, and the compressor slows down significantly to stop making boost. When you get back on the throttle after the shift, then you have to get the turbo spinning fast again, and it takes a moment to overcome the inertia of the turbo (change the speed from maybe 40,000 rpm to 100,000 rpm) and build up the airflow.
Turbos are great fun though! If you select the correct size, they can make huge torque in the mid range and efficient top end power. Compared to a centrifugal blower, a properly matched turbo can make more power everywhere for the given boost level, because it has a much higher efficiency. Compared to a positive displacement blower, the blower will always make more low end torque until the turbo gets spooled up, and then the turbo is more efficient.
Maxpowers
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