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30 Jan 2019, 09:30 (Ref:3880611) | #26 | ||
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If the need is great enough, Hopefully it will happen!
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30 Jan 2019, 17:01 (Ref:3880707) | #27 | ||
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31 Jan 2019, 10:02 (Ref:3880845) | #28 | |||
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Quote:
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10 Feb 2019, 15:25 (Ref:3882960) | #29 | ||
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Just back from Rétromobile, seems Jaguar Heritage has some old 45 DCO3 (#109 for instance) fitted on D Type. Hope this can help. More details may be John elwin knows more.
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10 Feb 2019, 15:42 (Ref:3882964) | #30 | ||
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Yes, 45s being fitted on Jaguars was mentioned a few posts ago. I think it’s 40s that are required for the smaller engined cars discussed (much) earlier....
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12 Feb 2019, 07:53 (Ref:3883457) | #31 | ||
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The 1955 Arzani-Volpini F1 car used Weber 48DOM carburation. Does that help?
Source Denis Jenkinson. |
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12 Feb 2019, 13:25 (Ref:3883516) | #32 | ||
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12 Feb 2019, 13:36 (Ref:3883518) | #33 | ||
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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...... |
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12 Feb 2019, 13:47 (Ref:3883523) | #34 | ||
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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.)
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12 Feb 2019, 15:27 (Ref:3883548) | #35 | |||
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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. |
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12 Feb 2019, 15:31 (Ref:3883549) | #36 | |||
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Probably no help at all. but I do like to show-off |
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12 Feb 2019, 15:50 (Ref:3883555) | #37 | ||
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12 Feb 2019, 15:53 (Ref:3883559) | #38 | ||
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Do Lotus Elites use DCOEs?
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12 Feb 2019, 15:57 (Ref:3883560) | #39 | ||
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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!
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12 Feb 2019, 16:07 (Ref:3883565) | #40 | ||
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12 Feb 2019, 16:13 (Ref:3883567) | #41 | ||
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If Jag' Heritage can have 45 DCO made why not 40? Just a matter of money.
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12 Feb 2019, 16:20 (Ref:3883570) | #42 | ||
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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.....
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12 Feb 2019, 16:26 (Ref:3883573) | #43 | ||
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Indeed.
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14 Feb 2019, 09:15 (Ref:3884052) | #44 | |||
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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. |
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11 Nov 2019, 11:53 (Ref:3939936) | #45 | ||
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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....
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11 Nov 2019, 17:14 (Ref:3939979) | #46 | ||
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More info from Jakob- Crosthwaite & Gardiner and D Type Developments are both in the process of manufacturing new 40DCO3 carbs, and hope they will be available for next season. At a cost no doubt.....
Last edited by Mike Bell; 11 Nov 2019 at 18:39. Reason: Sp |
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19 Dec 2020, 04:29 (Ref:4023820) | #47 | ||
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Norman Seeney is also making 40 DCO3s, 1st set is for me at Four Ashes Garage , we already made 60 of the DB2/ DB3/ DB3S inlet manifolds 5 years ago from a period pattern, of which we have 48 available still.
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19 Dec 2020, 17:13 (Ref:4023932) | #48 | ||
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I think I read somewhere that DCOEs were 1st fitted to ?? in 1958, certainly the Prototype DB4GT DP199 was fitted with DCOEs from the word go in 1959.
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20 Dec 2020, 12:29 (Ref:4024104) | #49 | ||
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from John Wyers notes 45DCOE4s were fitted to DP199 for Le Mans so AM must have had them in late 58 or early 59 to build & test the engine then make the LM test day in April
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21 Dec 2020, 10:26 (Ref:4024308) | #50 | ||
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The DB4 GT is indeed one of the first cars to have been equipped with the DCOEs and that can be verified through Homologation but also manufacturer documentation, either Aston Martin directly or Weber as they were proud of that and advertised it in their own catalogues.
Generally speaking, 1958 is considered as the introduction year for those carburettors BUT period specification prevails. Arguably, the DCO3s were considered better units back then and SUs were also well in use on a whole lot of cars, homologated or not. |
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