zetec on bike carbs?

[danc001]

i have a escort gti engine in my mk3 escort but want to run bike carbs instead, i have the bike carbs, they are zx9r ones.

 

i just wanted to know how to fit them wiring wise??

 

i dont want to fork out a fortune on megajolt, and heard you could just use the edis module?

 

i have a gti loom in car with pats, would i have to replace this with a pre pats loom, for edis to work??

 

and what fuel pump and regulator would i need???

[Stu]

You could use a GTI loom+ecu if you have the transponder/key matched for it. You're right, there is no huge reason to go to megajolt.

 

Are they carbs or throttle bodies?

[danc001]

the loom all wired in, car runs fine.. but i want bike carbs instead! and there carbs. zx9r ones

[Stu]

So get a low pressure fuel pump designed for carbs and hook 'em up!

[-TJ-]

if it was as easy as that !

[Stu]

The question was about wiring, of which there isn't any if the ecu and loom is already in and functioning

 

Well, that is if you include wiring a new fuel pump in.

[bongo]

just a question,when fitting bike carbs,

 

can you use your cat or would it need a decat

 

and then with either of the above will this setup pass an mot (emissions)?

[Stu]

You can use a cat but you'll have fun and games getting the carbs tuned right to make it work properly.

[bongo]

You can use a cat but you'll have fun and games getting the carbs tuned right to make it work properly.

 

so i'll struggle passing the emissions with bike carbs and a decat in reality, or can they be tuned well enough to pass emissions with a decat?

[-TJ-]

You can use a cat but you'll have fun and games getting the carbs tuned right to make it work properly.

 

so i'll struggle passing the emissions with bike carbs and a decat in reality, or can they be tuned well enough to pass emissions with a decat?

 

You should fit the carbs with wideband anyway, so you can adjust the AFR on the low side to suit, if the NT fails you anyway of course.

 

Forgot to add, if your choking the carbs off, having a CAT or test pipe inline wont make any difference to the emissions

[Stu]

You can use a cat but you'll have fun and games getting the carbs tuned right to make it work properly.

 

so i'll struggle passing the emissions with bike carbs and a decat in reality, or can they be tuned well enough to pass emissions with a decat?

 

The right person should be able to tune them to pass a cat test but ultimately they're bike carbs designed for a small displacement engine. In other words, not the right thing for the job!

[bongo]

You can use a cat but you'll have fun and games getting the carbs tuned right to make it work properly.

 

so i'll struggle passing the emissions with bike carbs and a decat in reality, or can they be tuned well enough to pass emissions with a decat?

 

The right person should be able to tune them to pass a cat test but ultimately they're bike carbs designed for a small displacement engine. In other words, not the right thing for the job!

 

cheers stu

[-TJ-]

You can use a cat but you'll have fun and games getting the carbs tuned right to make it work properly.

 

so i'll struggle passing the emissions with bike carbs and a decat in reality, or can they be tuned well enough to pass emissions with a decat?

 

The right person should be able to tune them to pass a cat test but ultimately they're bike carbs designed for a small displacement engine. In other words, not the right thing for the job!

 

what a load of rubbish, displacement you say, well work out the CC per cylinder and choke sizing ?t is the very first thing decided, and can be matched perfectly. You've just contradicted yourself, without even knowing.

 

As for not the right thing for the job, you couldnt be more wrong.

 

car internet forums, full of experts

 

Edited August 16, 2010 by -TJ-

[Stu]

what a load of rubbish, displacement you say, well work out the CC per cylinder and choke sizing ?t is the very first thing decided, and can be matched perfectly. You've just contradicted yourself, without even knowing.

 

As for not the right thing for the job, you couldnt be more wrong.

 

car internet forums, full of experts

 

 

I am aware of choke sizing, tuned intake lengths (and diameters) with regards to maintaining best gas speeds at various throttle angles and engine speeds. The issue with a bike carb isn't the diameter of the opening, but the availability of suitable jetting and actually getting it to work nicely across the entire working range of the (larger displacement) engine. Sure, a 38mm choke may be nice for a 160hp zetec or so, but what is power without control?

 

Perhaps you're only familiar with flat out tuning? I mean, who cares about the rest, right?

 

My comment about it being the wrong thing for the job is perfectly accurate. You have car carbs and have you bike carbs. They differ. It doesn't take a rocket scientist to realise one is more appropriate than the other.

 

Ultimately though i'm not really sure why anyone would want to bolt carbs onto an engine these days. If you're going to dick around spending £500+ on a hack-it-and-see carb conversion, you may as well save up the extra pennies and go EFI. Yes, then you can use bike stuff if you really want, as you get the control you should have.

[-TJ-]

what a load of rubbish, displacement you say, well work out the CC per cylinder and choke sizing ?t is the very first thing decided, and can be matched perfectly. You've just contradicted yourself, without even knowing.

 

As for not the right thing for the job, you couldnt be more wrong.

 

car internet forums, full of experts

 

 

I am aware of choke sizing, tuned intake lengths (and diameters) with regards to maintaining best gas speeds at various throttle angles and engine speeds. The issue with a bike carb isn't the diameter of the opening, but the availability of suitable jetting and actually getting it to work nicely across the entire working range of the (larger displacement) engine. Sure, a 38mm choke may be nice for a 160hp zetec or so, but what is power without control?

 

Perhaps you're only familiar with flat out tuning? I mean, who cares about the rest, right?

 

My comment about it being the wrong thing for the job is perfectly accurate. You have car carbs and have you bike carbs. They differ. It doesn't take a rocket scientist to realise one is more appropriate than the other.

 

Ultimately though i'm not really sure why anyone would want to bolt carbs onto an engine these days. If you're going to dick around spending £500+ on a hack-it-and-see carb conversion, you may as well save up the extra pennies and go EFI. Yes, then you can use bike stuff if you really want, as you get the control you should have.

 

You sound a half clued up fella, and please dont talk to me about fuel trims because ive lived and breathed it, for a living for the last 14 years. So im not playing punch and judy with you

 

FYI - "160hp for a Zetec", assuming thats a 2000cc then 38mm is still too wide. Of course, you know this

 

The OP wants a cheap conversion, bike carbs are cheap and give huge grins, and thats what its all about on a budget owning a ford escort.