fuel consumption 1 / carbs

[Rudz]

Hello again, and thanks for the warm welcome!

My main field of action at the moment is trying to make my baby (74 with 2.0l V4 Essex) run more efficient. Ideally I have done something about this before the end of August, as then we are using it to drive through France, Spain and Portugal ;o)

As some of you know, I have already changed the back axle ration to the longest available for twin axles. This did help some (started with 16l/100km (15 mpg), now nearly 14l/100km (17 mpg)).

I have heard that close to 10l/100km (23 mpg) is possible. I doubt that, but would like to get as close as possible ;o)

I normally measure my mileage on long trips riding at a speed of close to 100km/h (60mph). What are your numbers? Especially people with the same engine 2.0l V4 Essex would be interesting to compare...

My next step is probably to replace the carb. This is something I could do before the vacation. I am very interested in your experience with this and have many questions about it:

The Weber 34 ICH is supposed to easily replace the Ford Fomoco carb that I have. There is a conversion kit available for the Transit part number 15290.327, that is supposed to fit. Does anyone know the jetting in this kit? I have asked several Weber dealers and noone could or wanted to tell me. Also the main and aux venturi size would be interesting, but I guess they are 29 and 3.5. Maybe some of you know how a 027 and 327 kit differs. The jetting of the 027 is well known...

Even better should be to install a sequential carb. Does anyone have experience with that? From what I understand, a sequential carb does not directly fit on the standard inlet manifold. Are any other manifolds available? I have heard about the Capri 2000 GT, which had a different manifold and it sounded as if it had a 2l V4. Where could I get one? How much would it be? I am very interested in any experience anyone has with his.

I hope some of you do have experience with all this and can help...

So much for now and thanks for you ideas,

Rudolf

[madmark]

rudolf ,no the twin choke carb will not fit on your manifold, you will need to get a manifold form a ford corsair or english mk1 capri, i have fitted the weber 34ich to my 1.7 it runs alot better! and was a easy swap!

[FredTransit]

rudolf ,no the twin choke carb will not fit on your manifold, you will need to get a manifold form a ford corsair or english mk1 capri, i have fitted the weber 34ich to my 1.7 it runs alot better! and was a easy swap!

Yup, we did this to our V4 way back, ya beat me to it Mark!

[Rudz]

Hey Fred,

thanks for the answer ;o) Were you refering to fitting a sequential carb or an 34 ICH?
Could you give any information about changes in fuel consumption? Would be interesting...

The standard 34 ICH has a 29 main venturi, which cannot be changed. I could get one that has a 27 main venturi, 34 ICH as well. Does anyone have any idea, whether that is better, worse, or what?

Cheers,

Rudolf

[baconsdozen]

I think you will find to get fuel consumption in the order of 20mpg at 60mph is just about impossible.Even the corsair car,same engine but a lot lighter and much less wind resistance would struggle to average anything over 20mpg overall.My Mk1 camper has overdrive,a high axle ratio and other mods but as the speed goes up so does the consumption.I can get 24 mpg but only by driving a bit slower and keeping acceleration down,pushing the thing hard it goes below 20mpg.The cheapest and best economy fitting is a light right foot or a vacuum guage that shows you just how much fuel is vanishing down the carb throats as you try to gain an extra 5mph.Keeping the tyres up to maximum pressure,an electric fan and keeping the engine up to scratch and a new or low resistance air filter are all worthwhile and cheap but eventually you get to the stage that further mods cost real money and it's a long while before any saving in terms of economy covers the expenditure neede to get it.

[FredTransit]

Hey Fred,

thanks for the answer ;o) Were you refering to fitting a sequential carb or an 34 ICH?
Could you give any information about changes in fuel consumption? Would be interesting...

The standard 34 ICH has a 29 main venturi, which cannot be changed. I could get one that has a 27 main venturi, 34 ICH as well. Does anyone have any idea, whether that is better, worse, or what?

Cheers,

Rudolf

Not sure what you mean by sequential, I was talking about the Webber Twin choke conversion. Did the trick, and we didn't notice that much difference in the fuel consumption. I depends how heavy you are with your right foot!

[MK1Chris]

Good post.

I've only had mine for a day and the first 180mile trip, my MK1 2litre V4 CI motorhome guzzled a tank and a half of petrol.

That's about 45 litres

I was doing a steady 50mph all the way and as far as I know, everything like axle ratios and 4 speed gearbox are standard.

My daily driver is a Peugeot 406 coupe with a 3litre V6 and auto box and that seems to be very economical and positively sensible compared to the van ! ! !

[madmark]

the v4 has never been known for its fuel consuption to be great!

[FredTransit]

Good post.

I've only had mine for a day and the first 180mile trip, my MK1 2litre V4 CI motorhome guzzled a tank and a half of petrol.

That's about 45 litres

I was doing a steady 50mph all the way and as far as I know, everything like axle ratios and 4 speed gearbox are standard.

My daily driver is a Peugeot 406 coupe with a 3litre V6 and auto box and that seems to be very economical and positively sensible compared to the van ! ! !

Unless you are reading the liters off the petrol reciept, the LWB tank ins 68L, not sure about the SWB cos ours has the tiny 35L minibus tank.

[zien49]

Hi, ALL. I may as well post my MPG here. Pudsey to Brighton 267 miles @ 50/55 mph 56.23 Lt, = 12,5 gal, = 21.36 MPG (and I have fitted a 4.6? diff, I think it was) notes not to hand. And looking at the plugs the engine was running weak so I am going to give the LPG another go and then its going to diesel?. DEREK

[MK1Chris]

MK1Chris wrote:
Good post.

I've only had mine for a day and the first 180mile trip, my MK1 2litre V4 CI motorhome guzzled a tank and a half of petrol.

That's about 45 litres

I was doing a steady 50mph all the way and as far as I know, everything like axle ratios and 4 speed gearbox are standard.

My daily driver is a Peugeot 406 coupe with a 3litre V6 and auto box and that seems to be very economical and positively sensible compared to the van ! ! !


Unless you are reading the liters off the petrol reciept, the LWB tank ins 68L, not sure about the SWB cos ours has the tiny 35L minibus tank.

Filled up when the dial said I was half way into the red and took just over 30 litres according to the petrol pump display. Perhaps I have the tiny 35L tank as well?

[FredTransit]

Is this a SWB or LWB? Our minibus is the SWB I ever drove, so it was a bit of a culture shock when it dawned on me just how small the tank is!

[MK1Chris]

It's this one... http://fordtransit.org/forum/viewtopic.php?t=15126

[FredTransit]

Well it looks SWB, but I am not too sure what the SWB chassis cab tank size is. according to the aynes bible it's 42L, which is about right as if you were on the red (about 10L) you got 32L in.

[Rolo]

Hey Fred,

thanks for the answer ;o) Were you refering to fitting a sequential carb or an 34 ICH?
Could you give any information about changes in fuel consumption? Would be interesting...

The standard 34 ICH has a 29 main venturi, which cannot be changed. I could get one that has a 27 main venturi, 34 ICH as well. Does anyone have any idea, whether that is better, worse, or what?

Cheers,

Rudolf

Not sure what you mean by sequential, I was talking about the Webber Twin choke conversion. Did the trick, and we didn't notice that much difference in the fuel consumption. I depends how heavy you are with your right foot!

Maybe the "twin choke" part is confusing Rudolf as much as it confuses me since I have never heard of such a thing.

Did you mean "double barrel" by any chance?