34ADM Carby on a 18R Engine

[Danielp]

Hey guys,
I've been havin a bit of trouble with my 18R endind up being the carby so i went and got a falcon carby off an XE(was recommended by a few people) and i bolted it up and everything now i just gotta get it running. anyone done this?
I need to know where all the vacume hoses and stuff go(or if i can just remove them) and also what size jets are the best for them.
also a pic of how the throttle cable goes would be handy

thanks in advance guys.

[MWP]

I have done exactly this... quite a few years ago though.

I tuned it by soldering & redrilling the jets (many, many times). It took a long time to get it running well.

A couple of photos that might be helpful (this is when it was on a 21R though)

#1


#2

Red vac line block off.
Green vac line went to vac adv on the dizzy.

The throttle pulley i made up from 3 pieces of 3mm alu plate.

The wire for fuel shutoff and electric choke goes to ignition power.

[Danielp]

cheers, thats the info i was after, do you have any pics of the soldering & redrilling of the jets ? can't you buy replacment jets for them?
thanks again

[MWP]

Nope, no photos of the jets.
Clean em up, carefully solder just the jet tip (not the full length), then use small drills (under 1mm) to make the size hole you need.

Some tips:
Tune the primary jet first. While doing so, have the secondary jet fully soldered closed, so you can work out what the primary is doing first.
Primary jet size will probably be larger than the one it comes with due to the lower vac from the smaller engine.

[Danielp]

sweet, will give it a go
will it still run with the stardard jets?
cheers

[MWP]

Yup, it will

[crowncustom]

Yes you can buy the jets not dear at all.18R's usually run well with 1.35mm in the primary and 1.40mm or 1.45mm in the secondary.If the jets haven't been changed in the Falcan carb it will have 1.35mm primary and 2.20mm secondary.
Hope this helps.
Cheers Brett.

[Danielp]

sweet cheers, so basically just change the secondary jet and should be ok?
also do i have to change the idle jets or anything else.
cheers guys all your help is very appreciated