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Title: Dellortos Post by: Derek Creasy on 01 February, 2023, 10:48:32 AM 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 .
Title: Re: Dellortos Post by: nistri on 01 February, 2023, 11:02:29 AM 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
Title: Re: Dellortos Post by: lancialulu on 01 February, 2023, 11:06:06 AM 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 Title: Re: Dellortos Post by: Richard Fridd on 01 February, 2023, 12:13:43 PM I have a vacuum meter if you need it. Could use two at once I suppose.
Richard Title: Re: Dellortos Post by: Derek Creasy on 01 February, 2023, 06:05:18 PM 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. Title: Re: Dellortos Post by: Derek Creasy on 01 February, 2023, 06:10:58 PM 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 . Title: Re: Dellortos Post by: Derek Creasy on 01 February, 2023, 06:13:42 PM 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 Title: Re: Dellortos Post by: nistri on 01 February, 2023, 07:47:32 PM 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 Title: Re: Dellortos Post by: lancialulu on 01 February, 2023, 09:59:15 PM I have a vacuum meter if you need it. Could use two at once I suppose. how about 4!Thanks Richard , I do have one but 2 might be handy |