can u help??

[dubslug]

i took it to a garage and they set it back to mot standards for co2, is this ok??
also when he really revved up hard the hydro carbs went to 1200, is this ok??wot are hydro carbs??

[davidhawkins_78]

If they've set it up to pass an MOT I'd imagine they've just turned the fueling down on the carb so the emissions meet the necessary standards.

They measure hydrocarbon levels as a guage of pollution ... (I think  )

If the car drives ok and u get better Mpg then leave it, but it'll not be producing as much Bhp as it could from a rolling road tune and re-jet!

Depends if you're fussed about a ?150 bill for say 5 bhp ...?

[dubslug]

so david are u saying i should have a 1600 carb on there???
how much would an overhaul on the old carb be roughly??as i have a 1600 webber here but the grommet around the fuel screw is fooked and needs replacing so ive been told??

[rubjonny]

The carb you have is fine, it just needs the fuel jets in the bottom replacing with ones to suit your engine.  The 1600 and 1800 carbs are the same, just with different fuel jets!

[dubslug]

how do i do that??

[davidhawkins_78]

http://www.fordcaprilaser.co.uk/weber_dcoe_carbs.htm#Diagram%20of%20Main%20Jet%20assembly

Here's a nice exploded view of a complete Jet - there's various bits you have to consider in order to get things perfect, but Take the jets out your 1600 carb and compare the parts / markings to the 1800cc one. Also I'm assuming you have a single choke carb??

If the previous comment is right you'll need a smaller main jet to change the fuel / air ratio.

I know they're different brands of carb but you might be lucky and they're compatable ... In that case just swap the whole jet over and try it !

[dubslug]

looks a bit confusing to me, might try and find a rolling road nr basingstoke and see wot they can do etc??
knew this car would cause problems

[davidhawkins_78]

lol .. chin up matey - yes it can get confusing, but that's carbs for you !!!

I spent WAAAaaay to much time with twin DCOE 40's on my previous car and the noise, power etc is lovely - living with them was hard.

Getting them jetted right - getting the idle jets right so the change from the idle jet to main jet was smooth - balancing them - getting the right lenght of trumpet - ALOT of work !!

You'll get there - and go check them jets out

[dubslug]

im gonna go get the old 1600 carb and have a good study of it see if i can find the jets and work out how to change them lol, thatnks for ur help will get there one day, i hope as my wallets taking a battering recently 

[davidhawkins_78]

If you want some help take a few digi pics and i'll take a look and see what advice I can offer if that's any good ... also you ever make it to any meets / cruises ?

Might be able to take a peak for you as I get about (erm .. not in that sense !)