John Berryman wrote:
On Feb 24, 2006, at 5:39 PM, Donald Snook wrote:

That makes sense. A 5 speed turbo would not do much good, would it? When you clutch and shift (and thus lose RPMs) wouldn't you lose most of the
turbo boost.  I guess that is why we never/rarely see a 5 sp. Turbo.



Donald H. Snook

        
Makes sense because the engine makes that much more power. The engine doesn't know or care what's behind it. There would be no noticeable loss of boost unless you're in the habit of shifting from 2nd to 5th and lugging the engine. Boost is directly related to exhaust flow, the more, the more up until the waste gate says enough. If one were to "power shift" there would be no loss of boost. Gears are or at least should be shifted in mere fractions of a second. I think there were more regulatory issues at hand concerning turbo/ 5spd than anything else.

Johnny B.
I Mac Therefore I am

Exhaust emissions (oxides of nitrogen I believe) on a turbo with manual transmission are WAY outside almost all limits when shifting (when there is NO load on the engine for a moment).

Marshall
--
          Marshall Booth (who doesn't respond to unsigned questions)
      "der Dieseling Doktor" [EMAIL PROTECTED]
'87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi

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