a Golf Carburetor in a Hilux - By Bennie Hurter (aka
I took it on
the highway yesterday and it does not go half bad, I was actually
impressed performance wise. The only thing I found was a bit of
sluggishness/hesitant on the bottom end (I was in some stop go traffic
on the Highway due to an accident). Last night I played around with
the vacuum advance on the dizzy. The integrated Dizzy that Dawie
bought has 2 vacuum connections, the one closest to the dizzy gets
fed via manifold vacuum and the other one via throttle vacuum. This
one advances the timing as you start opening the butterfly on the
carb. This carb has 3 outlets next to each other that you can select
from to use. I now moved it to the one on the left and used the
cap that covered it to cover the middle on that was used before.
Now this vacuum is applied a little quicker that before and she
feels much better. I will drive her again today and see how she
Note the vacuum
switch I mounted on a little bracket that was there already as if
made specially for this purpose. This valve is switched on with
the aircon pump to provide vacuum to the carburetors idle up vacuum
actuator to push up the idling when to compensate for the aircon
The 3 different
positions on the side of the carb to which can be used to advance
the timing from throttle vacuum. I selected the left on which reacts
the quickest on throttle movement
OK Guys, I've
emptied the first tank of fuel, so can give some indication of the
success of the conversion.
The costs included
Air Filter adapter
New petrol cable
Some labour and bits of spares.
I have to mention
that I did not try to do this cheaply, I rather went for new parts,
except for the electronic dizzy. I got a used one for R1 000. Toyota
recons R6 500 for a new one. :(
So my total
cost for the project was a shade under R4 000. Of which the carb
was R1 200 and the dizzy was R1 000.
My initial feeling
was that the van felt as if it did not accelerate as fast as it
used to, but it seemed to keep the speed up better than before.
Then I realized that it just feels so much smoother with the electronic
dizzy, and you can really feel the second throat of the carb open
up and deliver more power when needed. Where I usually had to gear
down as far as 3rd on some uphills to maintain 80km/h, and now coast
up in 4th at 95km/h. So there is a massive difference in power and
ease of driving. Cold starts is a little hard, but the engine warms
up pretty quick and then it just feels great!
I have been
driving from Pretoria to Johannesburg and around Johannesburg for
the past few days. So some hi way driving, but mostly stops and
starts and traffic, and my fuel consumption improved from 5.2km/l
to 7.6km/l under these conditions. This mean a saving of R65 per
100km in my fuel bill. That is at current fuel prices... So I have
to drive a shade over 6000km's to make up the cost. That is the
average distance of one trip for me and I do 4 a year....
So is it worth
it? Well, for me it is! I realise the cost was almost enough to
through an extra couple of thousand towards it and go for EFI, but
for what I use my vehicle for, I need to be able to fix it with
a bloudraad and tang in the middle of the Congo....
So for me it
was a great success. Thanks Bennie for your great help!!!
To discuss this
here and here