Sun Sep 29 22:16:48 1996
- Message No. 43
From: Sonic@gww.nl
Subject: Fuel-consumption / modified air filter box
========================================================
This E-mail came from :
Raymond Fels
Geert Grootestraat 49 - 7009 MH - Doetinchem
The Netherlands
Sonic@gww.nl
========================================================
Hello everybody,
Due to problems with my computer, I've been of the air for about two
weeks.
I just connected to Internet an read that my mail wasn't delivered.
So here I send it again.
A few weeks ago (now about 4 weeks) , I modified my airfilter box and
told you about it.
I already told that I'm verry pleased with the way the engine runs now.
But I also told that I wanted to check out the fuel consumption.
Well.....
The engine doesn't need more fuel than before, it uses as much as
before.
I drove for about 200 Km on the highway.
The first 100 Km in the rain with a speed between 110-130 Km/h quiet
constant.
The last 100 Km the weather was better, and I drove a speed between 130
and 140 Km/h.
But the speed was not constant. Every time there was a slow car on the
left track, and I had to
slow down to about 100-110 Km/h. Then when he moved to the right I
opened the gas till the speed was
about 140 Km/h again.
The last 10 Km I drove full speed.
The fuel consumption was 1:15.5.
So the fuel consumption is still normal.
Some of you asked about which fuel to use.
According to the manual you can use fuel with at least 91 octane.
But this is familiar to you.
Using unleaded fuel was only necessary with 'older' engines.
These engines needed a little lead on the valves and their 'seats'
(don't know the word).
This thin layer of lead absorbed the blow when the valve returns in his
seat.
Today most engines have harder valve-seats and therefore don't need
leaded fuel anymore.
BUT.....
There are some cases known in wich engines runned on unleaded fuel and
it turned out bad...
It seems that in some cases when you use unleaded fuel, there will build
up some 'carbon' on the valve-seats.
If that happens, the valves don't close anymore.
The hot air will be pressed through the thin space that is still open.
And the valves and their seats burned away.
You can read the story in an older magazin of MOTORRAD.
Beware of little books in wich you can look up on wich fuel your car
(bike) can run.
In The Netherlands we could get these bokks at the fuel tank.
We had FIAT's for the last 20 years and in these books stood that they
needed leaded fuel.
( special when you drive fast or use the car under heave load)
A few years later the same type didn't need leaded fuel anymore......
The engines are not changed, but I think that this is a way of the
goverment to get rid of the leaded fuel.
Another argument is the polution. ???
The goverments tell us that lead is bad for nature.
Ok, they are right.
But when the fuel-companies removed the lead (they also lowered sneaky
the amount of lead in leaded fuel), they have to replace it
with something to get the requested octane-figure.
(The octane figure has to be higher if the engine has a higher
compression ratio.)
They do it by putting 'Benzeen' (don't know the english word) in the
fuel.
Benzeen will raise the chance of getting cancer verry much.
So the fuel-stations have to place new pumps that suck off the air that
leaves the tank on the moment you put fuel into it.
My question is: What is worse ??
I always put leaded fuel in the XRV.
I don't have a bad conscience about it.
I know that most of the motorised vehicles on the road have a emission
that is much worse to the environment then mine.
When all the vehicles are checked regular in a good way, the polution
will drop down.
If the goverments (or the people) don't come with a good way to regulate
it, I forsee that in a few years driving for funn will be to expensive
for the normal people.
But enough for know.....
Greetings from The Netherlands,
Raymond Fels.
|--------------------------------------------------------------------|
| This mail reached you through the Africa Twin Mailing List |
| More info at: http://www-normans.isd.uni-stuttgart.de/~dipper/xrv/ |
|--------------------------------------------------------------------|

dipper@normans.isd.uni-stuttgart.de