Zetec carbs to TB's

[Colin Cooper]

Hi Guys,

I am considering going from carbs to TB's for my standard Raceline 2ltr blacktop Zetec.

Omex have given me a few hints as have various blogs, but a lot is still unclear to a non-mechanic. I am thinking of going with the Omex 170bhp kit, but this only goes so far re the total work required.

Do I need to change the fuel tank, and run dual fuel pipes?

Has anyone gone down this route who could offer a few pointers.

Cheers,

Col

[Drumster]

Col,

Have a look here and here (latter part of article) for a more detailed description of my conversion.

I chose to change the fuel tank as I managed to get hold of an injection tank and in tank fuel pump quite easily. However, it can also be done by adding a swirl pot and a high pressure pump to your existing set up but I'll leave that to others who have gone this route to give you a detailed description

[elie boone]

On a circuit only Dunnel 190 bhp Zetec engine i run a external pump without swirl pot but with a return line. Caterham has the fuel pressure close to the fuel tank and in doing so don't need a fuel return line.

[Colin Cooper]

 

Michael & Elie,

Thank you both for you inputs, and Michael for the inserts.

If it was just 'under the hood' work, I would probably go ahead, but changing the tank, etc, I don't think so. I already have more than enough power at 175bhp, and was really only looking to add smoothness, and economy.

Thanks anyway.

Col   

[Duckpit]

If your carbs are 45's then I would have them which will help towards the cost of conversion

[alan c]

Different engine but I did my upgrade from carbs to full injection in stages and most dramatic change was going to a full 3D ignition but still on carbs so have you thought about that to improve "drive ability"?

[Colin Cooper]

Alan,

No I hadn't thought about that. I would be interested to know more about it though.

Col

[alan c]

My car has the VX 16V engine in it, originally this was running on Weber 45's and an electronic ignition but only 2D, i.e. no link to throttle position.

I purchased a newer model ECU that could run a full 3D map. I got a basic map with that made life a little simpler it but after installation it did need mapping and you will need a new engine loom. (Loom I purchased was full loom capable of adding injectors later)

Once mapped I got a little more power it was much more "driveable" and as an unintended benefit mpg was better.

i did got to full injection later but first step was a big improvement. It was not an option when I did it but if you want the carb look you can convert the carb bodies to fuel injection.

Hope the above helps.

[Drumster]

I ran a Zetec on carbs and an Omex ECU and that had a throttle pot so as far as i understand it Colin already has 3D ignition.

[Colin Cooper]

Just shows you what I know!!!

Yes, Michael you are correct. The car already has am Omex 200.

Perhaps a trip to a rolling road would help reduce the emissions that my MOT tester shakes his head at.

Col

[Drumster]

Whose Michael? 

[Peter Mears]

After converting to 45s in 2014 on my Zetec I think I am going to take the plunge and go injection just to get the smooth instant revs and a better drive.

Will need a new tank and an ecu etc, lots of advice on here as to what to get but who would be able to complete this work in the midlands area ?

Any suggestions as although I have the time time not sure I have the knowledge. I'm okay bolting bits on but fuel lines and wiring worry me.

[Peter Mears]

I see omex do a complete kit with everything you need in it. There's a couple of bits I have fitted already such as the manifold and some of the sensors including the throttle one.

Anyone used this kit ? Would that be a good route or buy things separately .

[Colin Cooper]

Sorry, Mr Screens.!!