Ok due to my change of plans i need to figure out my fueling.
I have a pair of 40 DCOE webbers but need to get a pinto manifold for them.
or do i ditch the dcoe's and go for bike carbs?
Its a personal preference thing really and it depends on what you have if you just need a manifold you can pick them up for a reasonable sum but if
you need everything then selling the webers and going bike carb might work out cheaper
my bike carb set up owes me about £60 so far without filters
I paid £48 for the carbs delivered and £15 for the silicon hoses and my manifold has just cost my time
if its not about cost then I beleive bike carbs offer better driveability but i dont have proof as my car is nowhere near being finished
Ray
AS above but dcoe do need setting up quite often and bike carbs set them up once and leave alone
USED Pinto twin DCOE manifold on ebay
item number 280424285035
might get it cheap!
Of course personal choice will prevail but if it was me I would go bike carbs, if I had the choice of the two, if they'd been 45's it would
have been a tougher choice.
Cheers
Rich
Bike carbs for me everytime.It
is of course my personal choice,some
prefer webbers.
Andy
bike carbs for me, power all the way through the rev range and once set up they are a pain free operation
Nothing wrong with webers! After all they were used on many many production cars, something bike carbs have never been!
Once set up with the correct jets etc then they will stay in tune too. I do not understand why people think they are a problem?
Both need a rolling road to set up properly, I guess you could just slap the "advised" jets in webers and it would be OK, as much as
drilling jets on bike carbs. But to get either spot on will cost.
Not sure about using silicone either, it breaks up when used with petrol! needs a special variety (fluro something IIRC)
Why not try the webers with the cheap manifold. then if you don't like them it's only cost you for the manifold as you already have the
carbs.
Unless you have a tuned engine, the 40's will be fine, giving good mid range power but only losing out at the top end to 45's if you are
going for say 150BHP+ out of the pinto.
The webers will sound great and suck small children off the pavement as you roar past! 
Go for Bike carbs if the webers are worn or knackered. they are impossible to set up if the shafts are bent or there are blocked jets etc.
Bike carbs the next best thing to fuel injection based on the su carb
Webers have had there day and should be left there i have delt with many over the years new and old set up on rolling roads etc all being a lot of
trouble
As a thought, have you checked what chokes, jets etc are fitted to the webers, and that everything moves as it should?
There is plenty of advice out there, weber jets can be drilled to enlarge, but tubes can't (unless you REALLY know what you are doing!!) Changing
stuff on webers can get eye-watering....but once done properly they can be VERY good.
Please also note, the production cars that used weber DCOE or the downdraft versions were all rather tasty!
DCOE's everytime. If you can live with the fuel economy (20mpg) then go for the Webers. Many more people will rolling road tune webers than they
will bike carbs.
Had a set on the pinto and it was brilliant. I then moved on to fuel injection which was even better!
bike carbs for me every time. DCOE's or DHLA's never seem to stay in tune for long whereas bike carbs are sooooooo much simpler (less to go wrong / adjust), hold tune better and are smoother generally where the DCOE's can suffer flat spots around the progression point between idle and main jets unless very well tuned all the time.
I've had several Alfas with Webbers and Dell'ortos on and they rarely went out of tune [Dell'ortos worked better]. They weren't
'DCOEs but work in the same way.
I have bike carbs now but that is just for cost.
Stu
Wbers and Dellortos cannot go out of tune. The jets are fixed.
All that can happen is they go out of balance, but that shouldnt happen either as long as the link is in good condition.
David
I returned 26 mpg on twin 40's driven hard on a 1,8 zetec
quote:
Originally posted by austin man
I returned 26 mpg on twin 40's driven hard on a 1,8 zetec
If you have the webbers jetted (approx)for your motor and the linkages then I suggest sticking with them, but I like the bike carbs on my pinto, very smooth.