Rootes Holbay Weber 40DCOE Extended Auxiliary Venturi Tubes (set of 4 tubes)

Verkauft Siehe ähnliche Artikel EUR 27,56 Sofort-Kaufen, EUR 5,45 Versand, eBay-Käuferschutz
Verkäufer: markread644 ✉️ (499) 100%, Artikelstandort: Lymington, GB, Versand nach: EUROPE, US, CA, Artikelnummer: 163675234534 Rootes Holbay Weber 40DCOE Extended Auxiliary Venturi Tubes (set of 4 tubes).

(THIS LISTING IS FOR A SET OF FOUR. IF YOU WANT TO PURCHASE SINGLY THEN SEE OUR OTHER ADVERT)

Do you have 40DCOEs Type 34/35 (or 90/91) on your engine? Do you wish you had kept the extended tubes from the auxiliary venturi?

They are there for a reason. At tick over or low rpm there is a pulsating flow in the main venturi which makes for slow throttle response and uneven fuel vaporisation.

Weber and Holbay decided to provide an auxiliary venturi to direct air flow at the main fuel dispersing orifice and by adding an extended tube (longer than the trumpets), the pulses are smoothed out and tick-over and low throttle response are improved.

So you dont have them or cut them off and wished you could replace them but they are like rocking horse pooh. Nobody sells them.

WRONG

New Forest Gaskets have found a supplier of the specialist tube used on this extended venturi and are able to offer a set (or singly) and a reasonable price.

£20 for a set of 4 tubes they will not break the bank. P+P is extra but its a large letter in the UK at £1.50 in a Jiffy Bag. With eBay and PayPal commission this works out at £23.56 + £1.50 P+P (yes it really costs a lot to sell via this platform!). We ship all over the world so if you are not UK then send a message and I will give you a quote for your location....

NOTE:- These extended tubes are designed for 55 mm trumpets and are 100 mm long. If you do need to cut then shorter then you need to chamfer the internal leading edge to reduce turbulence at the entry tip.

PLEASE NOTE - some fettling may/will be required to get these to push in to the recess in the aux venturi. This varies from polishing the end with emery paper to a little more work. The tube needs to be a hard push fit or it falls out. Some users have used a dab of epoxy to hold in place.

PLEASE NOTE 2 - the Holbay DCOEs are drilled on the aux centre tube to receive the extenders. The aux vent centre tube is 14 mm OD and the ID is bored to 11.80 - 11.90 mm for the 12 mm extender tube. The tolerance on the extender tube is +0.1 - 0.0 and so you can see why some installations may need fettling (see second pic). We are now machining the end to 11.70 to make it easier for you. If you want an untouched end then let me know

  • Condition: Neu
  • Custom Bundle: No
  • Modified Item: No
  • Non-Domestic Product: No

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