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Weber DCOE Modification

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Uploaded by on Jun 27, 2009

Here's another problem that John @ Costa Mesa R&D Automotive Machine fixed for one of his clients, a couple of additional air/fuel bleed holes to improve off-idle performance. www.engine-machining.com 949-631-6376

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  • I wan to see some one talking about pressurize 45 DCOE for blow trough turbo application.Let me know at orlando3tc1.8@gmail.com

  • The number and placement of progression holes (and stroke of the accelerator pump) is implicit in the designator stamped on the casting. A 40 DCOE-18 is NOT the same as a 40 DCOE-2. Owners purchasing the wrong DCOE for their engine and state-of-tune is the primary reason why DCOEs are often maligned. Get it right and you'll wonder why all the fuss. John's machining is an effort to make a poorly selected DCOE work.

  • Nice work, most 16 valve engines prefer to run with an extra progression hole just off idle, (4 progression holes instead of 3) they are called dcoe 152G and zetec engines prefer 5 holes.

    The progression holes let more fuel to be sucked into the engine on slight throttle openings to remove a flat spot, when the throttle is opened past all of the holes the main jet takes over.

    Regards

    Jason

  • heh I don't need to call him. I just drop by at his shop for a nice chat when I can. best part is I am just about 30 mins away to where he works!

  • If i have a chance going to america, im going to meet him for sure.

  • Call this man. He will talk to you with the knowledge.

  • When he says "Call me" with questions, he means it. I called him on welding aluminum cylinder heads n we talked it up for half an hour. Great person. Very knowledgeable.

  • cool keep up the great work

  • Wow brave work i've been told by loads of people never take these apart cos they will never be right again! : )

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