Hi guys girls and others.

i am planning on fitting some weber twin 40's to the fiesta for the summer.
i currently have the carbs and manifold, fuel pressure regulator,lots of fuel pipe etc..

but i havent yet been able to fork out the cash for the ignition management.

i was wondering,

will i be able to run the carbs on the current rs1800 management,
i know it will run in severe limp mode,
but as long as it will run well enough for me to decide if the carbs are working okay.
once i know the carbs are worth it i wont mind forking out the £200 for the megajolt management

in theory, it should run okay. (may not with the desired ignition timing curve)

has anyone tried this?
with webers?
or bike carbs?
or similar?

obviously i'll be taking the whole inlet manifold off and only leaving the crank position sensor and other ignition related wires.

The carbs need to be jetted the suite the engine.
i've had a few suggestions from pierce manifolds

i popped down to Burton power and he basically said scrap the 40's you need 45's
but i've read elsewhere people using 40's with around 150bhp

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buttery biscuit boost

i have 40s on mine mate and it is running standard management and run fine for me its still quick enough for me

and the person who had my car before got 152 bhp aswell so 150 is about right what he said

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buttery biscuit boost

this video running we had just got engine running as i put a new engine in

http://www.youtube.com/watch?v=FykyJZFQ ... annel_page

another one messing around i love carbs for this lol

http://www.youtube.com/watch?v=0FAUh3qK ... annel_page

no idea what jets and chokes it has as i bought the car with them on so no idea i could possibly find out

and pics you dont get much room at all very tight down at the back

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kool, thanks for the pics,
funny enough i found them vids on youtuuuube a few days ago, i was showing a friend of mine.

i still cant imagine why the guy at Burton power said they wont be suitable for an rs1800 engine,
maybe he thought i was going to run a single carb??

if you could find out the jets that would be awesome.

I've gotta strip the carbs and rebuild them as all the rubbers and gaskets have gone brittle.

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buttery biscuit boost

no idea why he said that havent a clue i will try and find out get the boss to find out at work lol

should be a new video soon on youtube of the rev limiter and launch control and then one of it driving down the road i have got one driving on the road but it leaves my house go for a thrash round then pull up at my house again lol

just keep in mind how much fuel it will use as you will be getting around 100 miles to a tank once they are fitted

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pfft me neither,
yeah any info would be good

post your vids when there up

yeah i understand fuel consumption is gonna be pretty bad, especially if i cane it about everywhere
maybe i'll carry some smaller jets for going on long missions lol.

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buttery biscuit boost

100 miles to a tank ?!?! you are joking aren't you?
thats 10mpg! and i though my lolvo was bad!

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My ebay stuff


Is that the best you can do?
-
2000 V70 T5 SE - 2.3, 5 cylinder, 20V, VVT, Turbo, 250bhp, cream leather, climate control, the works!

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100 miles per tank is pretty extreme,
if carbs are set up well you can expect to see 26-30mpg
of course fuel economy comes at the expense of performance with carbs (so i believe)

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buttery biscuit boost

yeah the leaner you run them the better petrol and there for better mpg but less perfromance

to be honest i really cant see you getting near 25mpg but someone else could say more

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my car currently does 24mpg so if i can achieve that on motorway driving I'd be happy

so are you still running your carbs on ford eec management? (i.e the standard ecu)
did you say it was running about 150bhp?
or was that with some other management?

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buttery biscuit boost

yeah im happy with it mate pulls really well in any gear only thing i would advise is a rev limiter i have just fitted one as when you miss a gear will carry on going and gone though 2 engine from that

the person before me had it done and got 152bhp

and the vid on youtube i did drive it down the street and back up yeah just to test it out would of liked to go on a big drive but no tax and insurance stoped that

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Hi guys, its been a while since i visited this thread.

firstly, my twin 40 webers did run using the standard rs1800 management
however when i had the syncro gauges attached they all said the ignition timing was not advanced enough.
the carbs i had run okay but were running to small chokes (32mm) and to big ventries (6) so i had loads of torque at the bottom end but couldnt rev past 4000rpm, it was iritating because ther was loads of power there but not enough air flow

anywho, i blew my rs1800 engine up, well not really blew it up, but destroyed it internally
part of my throttle linkage dropped into the carb at about 3000rpm wedged the valve open, there was no compressions in the cylinder and as a result the piston came up, smacked the cylinder head, buckling it, broke the inlet valves and smooshed the spark plug.

running filters is essential even just for a test run as i have now discovered.

this major setback has resulted in the scrappage of the twin40 plan for my car, the rs1800 engine has been replaced with an escort GTI engine with rs1800 cams inlet and ecu (so the difference is only mild)

the carbs and everything else needed is now on ebay for sale

carbs
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0451568615
manifold
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0451568299
some little v stacks
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0451569604
fuel pressure regulator
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0451578670
emulsion tubes
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0451544040

if i hadnt wrecked the engine then i would definatly have finnished the converison and had the proper chokes and ventries fitted as the noise was awesome

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buttery biscuit boost