[Shotimes] Power adder discussion

[Ron Porter]

I also suspect that one of the issues with Japanese cars going to turbos is
that they tend to be higher rpm motors anyway, which would favor a turbo.

The other could be for emissions testing. The turbo does not come into play
on the EPA cycles, so they can tune it rich at the top end. Much like how
the SHO PCM is tuned from the factory.

The European mfrs are going with superchargers now that they are getting
into the forced-induction arena. It just seems to be the car mfrs that have
been into turbos for years (Japanese, Volvo, etc) are staying with what they
know.

It could also be that superchargers could not be properly tuned for
emissions until the newer breed of PCMs came out within the past few years
(Like EEC-V, etc). Superchargers make more sense for heavier vehicles with
ATX trannies.

Ron Porter 

-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
On Behalf Of Donald Mallinson
Sent: Wednesday, October 01, 2003 11:01 AM
To: shotimes@autox.team.net
Subject: Re: [Shotimes] Power adder discussion


As to diesels, I would guess that the turbo is more 
efficient and offers better fuel mileage and less maintenance.

Another thing is that superchargers as used on passenger 
cars are there to give low end torque, and that is something 
diesel engines excell in, but they lack top end HP, and that 
is where a turbo can really help.  Turbo's are a better fit 
for a high torque engine like a diesel.

Superchargers are on many small cars, Mercedes for instance 
has a line of supercharged 4 cyl engines in its new small 
lineup.

And as Ron Childs said, turbo's are WAY more complicated to 
plumb up than a supercharger with the exhaust plumbing needed.

Don Mallinson

Jonathan Zane KC2ENA wrote:
> During a conversation I had on the way into work this morning a friend of
> mine asked some interesting questions.
>  
> Why do diesels only seem to have Turbo power adders?
>  
> Why do imports and small cars seem to only come with turbo chargers and
not
> super chargers?
>  
> Why do most people add a supercharger and not a turbo to N/A car?
>  
>  
> Jonathan Zane
> 1988 Mustang LX
> 1995 Taurus SHO
> 1993 Taurus SHO
> 1979 F-150 4x4
> 1989 Ford Festiva
> 2001 Raptor
> www.njfourwheelers.com/jon.html
>  <http://www.kc2ena.com/> 
> 
> [demime 0.99d.1 removed an attachment of type image/gif which had a name
of kc2ena.gif]
> _______________________________________________
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> 
> .
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