Dellortos

[Derek Creasy]

I have just acquired a pair of 35 Dellortos for my 1.3 Sport . Does anyone know the standard jet sizes please so that I can check when I strip them .

[nistri]

Well done, a very wise purchase. Note that there were 2 types of 35mm Dellortos for Fulvia: one for saloon and one for coupe (and sport). If you are lucky, the carbs should still wear a metal tag with their identification number. However, the tag is often missing. The coupe has a 112 max jet while the saloon has 108. Moreover, the coupe type has 31 venturi diffusor while the saloon has 29. Please note that all these carbs have needle valves with a fine rubber tip: this is to ensure highly accurate function on the float, but the tip can wear down thus giving carburetion problems. Check that in your carbs the tip is sharp. Balancing them needs a flow meter and vacuum meters. Andrea

[lancialulu]

DHLB 35's?

Should be jetted for Fulvia.

Choke 31
Emulsion/idle 8178.1
Main 112
Idle 45
Emulsion/main 7772.4
Float height 13-13.5mm

Tim

[Richard Fridd]

I have a vacuum meter if you need it. Could use two at once I suppose.

  Richard

[Derek Creasy]

Well done, a very wise purchase. Note that there were 2 types of 35mm Dellortos for Fulvia: one for saloon and one for coupe (and sport). If you are lucky, the carbs should still wear a metal tag with their identification number. However, the tag is often missing. The coupe has a 112 max jet while the saloon has 108. Moreover, the coupe type has 31 venturi diffusor while the saloon has 29. Please note that all these carbs have needle valves with a fine rubber tip: this is to ensure highly accurate function on the float, but the tip can wear down thus giving carburetion problems. Check that in your carbs the tip is sharp. Balancing them needs a flow meter and vacuum meters. Andrea

Thanks for your swift reply Andrea .  They do indeed retain the tag and it reads   R5217P  which I hope you can identify ? I will definitely check the needle valves when I strip them tomorrow.

[Derek Creasy]

DHLB 35's?

Should be jetted for Fulvia.

Choke 31
Emulsion/idle 8178.1
Main 112
Idle 45
Emulsion/main 7772.4
Float height 13-13.5mm

Tim
Thanks Tim , yes DHLB 35's with a tag reading R5217P . I am going to strip them tomorrow .

[Derek Creasy]

I have a vacuum meter if you need it. Could use two at once I suppose.

  Thanks Richard , I do have one but 2 might be handy

[nistri]

Hi Derek,
the number quoted by you (R5217P) indeed indicates a coupe set of Dellortos. P stands for rear carb, ie near the ignition coil. I am sure you will enjoy the superior quality of the Dellortos if correctly set up. Andrea

[lancialulu]

I have a vacuum meter if you need it. Could use two at once I suppose.

  Thanks Richard , I do have one but 2 might be handy

how about 4!