From: Bjorn Brandstedt (super_deuce@hotmail.com)
Date: Sat Oct 12 2002 - 08:38:00 PDT
Hi Alex,
Thanks for your comments!
All I'm saying is that the wastegate limits the boost by bypassing the
exhaust gases at a certain boost level. Using "heat" as a term for limiting
the output of the engine may not have been the best choice of words, but the
temperature is a good way to monitor engine performance.
The wastegate may protect the turbo in the process, but the main purpose is
to limit the boost to the engine.
Do you agree that a wastegate that is stuck open will limit the boost to a
point that the turbo may not spinn at all?
Regards,
Bjorn
>From: "Alex McPherson" <alexmacca@mail.dodo.net.au>
>To: "Bjorn Brandstedt" <super_deuce@hotmail.com>
>Subject: Re: [MV] Turbo boost on a M54? Anyone know the specs?
>Date: Sun, 13 Oct 2002 00:27:46 +1000
>
>Bjorn,
>All good points, however the waste gate is not there and really has nothing
>to do with excessive heat, it's more of a governor for the turbo. A while
>ago I posted the speeds that turbos do. It is like the governor on the
>diesel and is there to limit the RPM. A diesel Engine without a governor
>would keep revving increasing revs all the toime until it blew up. The
>same
>with the Turbo. It will increase in revs until it is spinning so fast that
>it will break through the housings. I have seen a turbo that had done this
>at trade school.
>
>I hope this makes more sense. I am not a fan of correcting people on list.
>
>Alex
>----- Original Message -----
>From: "Bjorn Brandstedt" <super_deuce@hotmail.com>
>To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
>Sent: Sunday, October 13, 2002 12:13 AM
>Subject: Re: [MV] Turbo boost on a M54? Anyone know the specs?
>
>
> > Jim,
> > The reason for the turbocharger is, of course, to generate boost. More
>boost
> > also makes it possible to burn more fuel, which in turn gives the engine
> > more torque and horse power.
> > If the turbo isn't producing any boost, you will end up with a lot of
> > unburned fuel in the exhaust (=black smoke).
> > Which engine do you have?
> > The engine should have anywhere from 5 to 25 psi of boost. How are you
> > measuring it?
> > Does your turbo have a wastegate? The wastegate is a spring loaded valve
> > designed to bypass the turbo when a certain boost has been obtained.
>This
> > protects the engine from excessive heat.
> > If so equipped, I would make sure that the wastegate is working
>properly.
> > Also, check the air intake filter, it takes a lot of air to feed these
> > engines. A clean filter/air passage is a must.
> >
> > My experience is limited to my LD-465-1 engine with a newly installed
>turbo,
> > but I hope some of this helps.
> >
> > Bjorn
> >
> >
> >
> > >From: JJ&A <w7ls@blarg.net>
> > >To: <mil-veh@mil-veh.org> (Military Vehicles Mailing List)
> > >Subject: [MV] Turbo boost on a M54? Anyone know the specs?
> > >Date: Fri, 11 Oct 2002 22:22:35 -0700
> > >
> > >I don't get any (or much, anyway) turbo boost on my M54A2. Should there
> > >be an atmosphere of boost or so? Does the turbo just take away the
> > >vaccuum or is it also supposed to boost, too? Thanks. Jim
> > >
> > >
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