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Dellorto DHLA 45e pump jet query - Engine & Ancilliaries/Gearbox - The Lotus Forums Jump to content
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Dellorto DHLA 45e pump jet query

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Can anyone help to clarify whether or not the pump jets in my carbs are standard fitment or not.


I've spent the past few months rebuilding my 45e carbs and after soaking all the jets and small parts in cleaner I noticed that the 4 x pump jets have two outlets for the fuel. One outlet for a vertical jet and one for horizontal jet.


The book states the pump jet specification for a spec 5 engine as   38v42h    38v (vertical) 42h (horizontal).



The numbers on my jets are 42  (the suffix letter is a bit hard to determine).


What i'm wondering about is, 

Is the specification saying that the jet is special hybrid type with twin outlets 38v and 42h   or two does it refer to two different options, either a 38v jet or a 42h jet.


Looking at the jets, it seems that the vertical hole is at least twice the size of the horizontal hole, which doesn't make sense if the former is correct.


Hope someone can shed some light on the problem.



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