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Re: [Healeys] Triple Weber 45DCOE Carburettors

To: Derek Job <derek.c.job@gmail.com>
Subject: Re: [Healeys] Triple Weber 45DCOE Carburettors
From: Oudesluys <coudesluijs@chello.nl>
Date: Wed, 19 Aug 2009 18:30:27 +0200
Providing the jetting and ventury is correct, DCOE 
Webers/DellOrto's/Solexes are quite easy to set up properly, however if 
you have it done it should be done by an expert. DIY can be done but 
preferably you need some Colortunes (3) and a multiple vacuummeter. 
Rebuild sets are easy to come by and are not overly expensive (ebay). 
Once set it is a forget about it affair.
The jetting and ventury's should be checked with what is recommended.
 Fuel efficiency is high on these carbs, but they will use a bit more 
fuel and deliver a bit more power for that. You can influence the 
powerband by using different lengths of trumpets. Grosso modo: the 
shorter they are the higher the delivery band.
The Webers will need less attention than the SU's once setup.
There is a very informative book about Webers/DellOrto's by Des Hamill: 
How to build & power tune Weber & DellOrto DCOE & DHLA carburettors, 
ISBN 1-901295-64-8 / UPC: 36847-00164-3.
Kees Oudesluijs
NL

> Some questions.
>
> 1. Once set up correctly do they need regular adjustment or are they
> relatively stable. I will need an expert to set them up and therefore don't
> want to be having to pay somebody every two minutes.
>
> 2. Is it true that most of the power only comes in at the top end, ie not
> really useful if not racing, or does that depend on how they are set up to
> begin with. I understand that there are multiple variables in how they can
> be set up.
>
> 3. I imagine that fuel consumption could increase significantly. Any
> thoughts? The engine  is currently rated in excess of 200bhp.
>
> 4 Would it be better all round to switch to triple 2" SUs. To be honest I
> doubt I will ever be able to set up triple Webers myself!
>
> Any thoughts much appreciated.
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