I have finaly caved in and accepted that CEC is the way to go.
Im going for a zetec 1.8 or 2.0.
Just interested to know the main differences with using bike carbs or tb's?
And a rough cost for each installation?
Cheers guys Jas Gray
carbs for simplicity, tbs for economy is how i see it basically.
TBs might cost a little more, but ultimately they should give better economy, smoother running and more scope for tuning. unlike carbs they're also more likely to stay tuned once set-up.
Carbs for cost, can be set up to give very good MPG as well...
I'm getting more convinced though TB's will give me more go...
Maybe another trip to Bogg Brothers during my forced rest period to get the definitive...
quote:
carbs for simplicity, tbs for economy is how i see it basically.
quote:
Originally posted by whitestu
quote:
carbs for simplicity, tbs for economy is how i see it basically.
From what people have posted about TBs, bike carbs seem to be at least as economical.
I think power / responsiveness across the rev range is the theoretical advantage of TBs, but from my limited experience bike carbs seem as good if set up right.
Carbs are much cheaper as you don't need a Megasquirt etc. to control them.
Stu
quote:
good to know, coz i've got bike carbs
thats not bad. i'm hopeless with electronics and electrics, so i decided to go with carbs for installation ease, but trading off economy, but it
compares pretty good with efi. happy with that
Cheers guys!
How much of a problem are emissions going to be come IVA time with carbs?
Cost comes down as work goes up.
If money is no limit than look at an of the shelf Tb Kit from say webcon ~£2000 That will give you 155bhp on a 1.8 zetec
How much do you want to spend and how much power do you want ?
For about £50 you can use the standard ford ecu. That will give you around 120bhp on a 1.8 
you will need a pre aug 1995 silver top to pass iva with carbs. Well you will need a cat anyway and it wont like carbs
[Edited on 1/6/09 by big_wasa]
At the risk of sounding boring, TB's are best, get a set from a big bike ~ £80 from Ebay, make a manifold to suit ~ £10 or buy one ~£250 then
bolt on a control system, Megasquirt/VEMS for us poorer folk which adds another £250, for the rich ones that want a name then Emerald adds ~£750
Carbs will save you some as no control is required, difference in driving is not huge if both lots are well set up, TB's are more instantaneous
but will you really notice....
The joy of TB’s is that as you tweak the engine you tweak the system for free and keep your hands clean, with carbs you are into jets and screws so
although more involved to get correct (people will disagree here, you can spend days with a laptop and get nowhere) its still all good.
At the end of the day you are plucking off a restrictive induction system and putting in an unrestrictive one, so it will go better either way.
Regards Mark
quote:
Originally posted by big_wasa
you will need a pre aug 1995 silver top to pass ive with carbs. Well you will need a cat anyway and it wont like carbs
[Edited on 1/6/09 by big_wasa]
quote:
Originally posted by Jasongray5
Cheers guys!
How much of a problem are emissions going to be come IVA time with carbs?
Which is better, throttle bodies or carbs?
quote:
Originally posted by jpindy3
quote:
Originally posted by Jasongray5
Cheers guys!
How much of a problem are emissions going to be come IVA time with carbs?
mate dont worrie about that!i did i had my iva test 2weeks ago,i have a tuned pinto on zx9r carbs,on the emishons test it didnt even show 1%,it will be fine
Hmm I am not saying a car wont pass with carbs, mine has a big set of weber carbs.
I am saying a post 95 engine will need a cat and long term the mixture being less adjustable than Fi will bugger the cat.
quote:
Originally posted by big_wasa
I am saying a post 95 engine will need a cat and long term the mixture being less adjustable than Fi will bugger the cat.
With each system working at its optimum (how often does that happen in the real world?) fuel injection will always have the edge, because carbs need a
restriction (venturi) in the airflow to work, whereas throttle bodies don't
John
I think it has been mentioned but worth saying again: if you go TBs, you can use the existing wiring loom. If you want carbs, you lose this option,
and your life suddenly becomes more complicated. On the other hand, you need a lot less wires with carbs. It strikes me as something to do later on.
Just my opinion of course.
[Edited on 1/6/09 by RK]
one more thing to consider - you may not be too bothered about economy - after all, its a sports car you are building, but remember one thing - as
these cars don't have a large fuel tank, one doing 17 mpg will only go 85 miles before you are sweating on finding the next garage .........
and if your really hoofing it around the lanes, it may not get that far.....
My engine is an XE - and I am sticking to the original injectors (if I can shoe - horn the lump in to the chassis, that is)(see my post under Luego)
quote:
Originally posted by blakep82
mate dont worrie about that!i did i had my iva test 2weeks ago,i have a tuned pinto on zx9r carbs,on the emishons test it didnt even show 1%,it will be fine
quote:
Originally posted by coozer
quote:
Originally posted by blakep82
mate dont worrie about that!i did i had my iva test 2weeks ago,i have a tuned pinto on zx9r carbs,on the emishons test it didnt even show 1%,it will be fine
yep, another one of those myths!
carbs can't pass s/iva, seatbelts MUST be E marked, etc etc