Weber DCOE- When first used?

[bauble]

The 1955 Arzani-Volpini F1 car used Weber 48DOM carburation. Does that help?

Source Denis Jenkinson.

[VIVA GT]

Originally Posted by bauble

The 1955 Arzani-Volpini F1 car used Weber 48DOM carburation. Does that help?

Source Denis Jenkinson.

Have you had your Ouija Board out again Baub?

[Mike Bell]

Thanks Bob. Your research is appreciated but is unlikely to help in this instance.

The concern was over the date of introduction of later DCOE versions. These are now being used on cars that in period had earlier DCO carbs, as those are very difficult to source. This is leading to HTP papers being refused. Mainly affects cars with smaller Coventry Climax engines from the late 50s early 60s......

[E.B]

Originally Posted by Mike Bell

Thanks Bob. Your research is appreciated but is unlikely to help in this instance.

Whilst I respect that Bob's post may not help with the particular topic, as a side issue I learnt of a previously unknown to me, beautiful 50's F1 car (even if on looking into it, it only managed one DNS at the '55 Italian GP.)

[bauble]

Originally Posted by E.B

Whilst I respect that Bob's post may not help with the particular topic, as a side issue I learnt of a previously unknown to me, beautiful 50's F1 car (even if on looking into it, it only managed one DNS at the '55 Italian GP.)

The car was built for a wealthy young Italian, Mario Alborghetti, who had raced touring cars and done a few rallies, in it's first outing in the Pau grand Prix, Alborghetti crashed, and died from his injuries.

The car was entered for the Italian GP for Luigi Piotti, but failed to start. The project was then put aside.

Unlike British 'one-off' racing cars it had it's own four cylinder engine.

A sad story, for a worthy effort.

[bauble]

Originally Posted by Mike Bell

Thanks Bob. Your research is appreciated but is unlikely to help in this instance.

The concern was over the date of introduction of later DCOE versions. These are now being used on cars that in period had earlier DCO carbs, as those are very difficult to source. This is leading to HTP papers being refused. Mainly affects cars with smaller Coventry Climax engines from the late 50s early 60s......

Of course Mike I have no idea of what I am talking about, but do own some fairly old books. The 250F Maser used 42DCOA3 Webers in 1954, while Ferrari used 50 and 58 DCOA3 models.

Probably no help at all. but I do like to show-off

[Mike Bell]

[Peter Mallett]

Do Lotus Elites use DCOEs?

[Gerard C]

Mon Ami Robert, I already told you that your pictures might help one day. Your memory too. What did you say about Behra not appreciating the diameter of the auxiliary venturis fitted on his Maserati? May be at Rouen les Essarts… Please take a lesson of what show off-must be ! La culture c'est comme la confiture, moins on en a et plus on l'étale!

[Mike Bell]

Originally Posted by Peter Mallett

Do Lotus Elites use DCOEs?

Yes as they are a later (1961) homologation. 40DCOE or H4 SU on the form.

[Gerard C]

If Jag' Heritage can have 45 DCO made why not 40? Just a matter of money.

[Mike Bell]

Probably because it will cost a lot to get it into production, and someone will have to bankroll that. Then the risk is selling enough to get the investment back. But as has been said in the thread before, if there is enough demand for anything, it can be done.....

[Gerard C]

Indeed.

[PeterMorley]

Originally Posted by Gerard C

If Jag' Heritage can have 45 DCO made why not 40? Just a matter of money.

There's no problem making them if the demand is there.
It could be possible to make 40mm versions using the patterns for the 45s, which would save a lot even if they aren't 100% accurate.

Given what Jaguar are charging for their cars they have included the 15 grand or so for 3 new carbs, which is apparently less than they "spend" on the paintwork.

The problem is people who's cars are worth less than a tenth of the price of the new Jaguars where 10 grand (only 2 carbs) is a large proportion of the cars value.

Another issue is why fitting brand new carbs to a 60 year old car makes it more original than using what could be 50 year old carbs.

[Mike Bell]

Just had this from Jakob Holstein, who is another Lotus XI owner affected by the carb issue. Guess it doesn’t prove anything, except that a Weber carb of some type was available and fitted in 1956. Interesting, though....