Re: [DMCForum] Re: PRV Alternatives: (nevermind)

[Marc Levy <malevy_nj@xxxxxxxxx>]

OK, but will any of them bolt up to a DMC trans?

I'd think a 4 cylinder turbo would be the best choice
because a 6 cylinder diesel will be much heavier than
the PRV.  Too much weight in the back will screw up
the rest of the car!


--- Martin Gutkowski <martin@xxxxxxxxxxxxxx> wrote:

> Volvo diesels have never been known for being very
> good.
> 
> to say "modern" diesel is a bit different than
> talking about a "modern" 
> petrol engine. A diesel engine is much simpler than
> a petrol engine. 
> Apart from the obvious main engine differences,
> there are no spark plugs 
> and no throttle(s). The engine is controlled solely
> by the metering of 
> the fuel. You put your foot down more, it injects
> more fuel, the more 
> power you have. The amount injected is directly
> proportional to the 
> position of your foot and manifold air pressure is
> more or less constant 
> given the lack of throttles! So basically if you
> want to drive a diesel 
> economically, don't have a lead foot.
> 
> So how is it done? Well, the older, simpler diesels
> run a single fuel 
> pump, run off the cam belt that does all the work of
> timing the 
> injection, and the throttle cable attaches to a
> lever on top of the 
> pump. Fuel is injecte dinto the intake tract, much
> the same as a petrol 
> engine.
> 
> The only electrical devices on the entire engine are
> the glowplugs, 
> which work for the first few seconds on cold
> startup, and the fuel 
> cutoff valve - which is the only way to stop it once
> it starts.
> 
> "Modern" diesels are all EFI and more critically
> direct injection where 
> the fuel is injected directly into the cylinders.
> The VW/Audi "TDi" 
> engines, also found on Landrovers are mechanical
> direct injection, The 
> Peugeot/Citroen and Renault engiens are all EFI. EFI
> does not give much 
> better economy than TDi but does give cleverer
> control of the turbo, and 
> given the nature of a diesel engine, a turbo suits
> it perfectly.
> 
> Martin
> 
> Marc Levy wrote:
> 
> > I'd be interested in what modern Diesel engines
> from
> > Europe may fit the DMC transmission.
> >
> > If you (Rich) or anyone were to attempt this
> > conversion, it would be better to use a more
> modern
> > engine than what Volvo used 20+ years ago.  The
> modern
> > options burn cleaner, and are more powerful....
> But
> > not available in the USA!  :(
> >
> > One of the web sites I read said that Volvo
> > discontinued the Diesel due to reliability
> problems.
> 
> 
> 
> 
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