Lotus Elan

DCOE 45's on a Zetec

PostPost by: prezoom » Thu Jan 28, 2016 9:40 pm

Is anyone using Weber DCOE 45 152G's on a 2L Zetec? Would be interested in what chokes and jetting you are using.
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PostPost by: c42 » Fri Jan 29, 2016 9:26 pm

You may find some info on this site:

http://www.turbosport.co.uk/forumdisplay.php?f=143

Regards
John
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PostPost by: Esprit2 » Fri Jan 29, 2016 9:36 pm

I'm familiar with the DCOE-151 & DCOE-152 (made in Spain).

What does the "G" in 152G signify?

Thanks,
Tim Engel
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PostPost by: prezoom » Sat Jan 30, 2016 2:56 am

Thanks John. I have visited this site, but have not found a thread on jetting yet. This was after reading about 3 years of Classic Ford. Will be raiding Holywood3546's library again.

Tim, The G identifies the carb with 5 progression holes. This model was one of the recommended things I found In Classic Ford.
Rob Walker
26-4889
50-0315N
1964 Sabra GT
1964 Elva Mk4T Coupe (awaiting restoration)
1965 Ford Falcon Ranchero, 302,AOD,9",rack and pinion,disc,etc,etc,etc
1954 Nash Healey LeMans Coupe

Owning a Lotus will get you off the couch
prezoom
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PostPost by: Esprit2 » Sat Jan 30, 2016 6:38 am

prezoom wrote:Is anyone using Weber DCOE 45 152G's on a 2L Zetec? Would be interested in what chokes and jetting you are using.
Zetec 2.0 = 1988 cc... right? I have no personal experience with the Zetec, but if you can provide an accurate rpm at which peak power occurs (not redline... peak power!), then I and can give you the generic recommended settings "by the book". Plan to tune a little from there.

Just taking a wild guess at 5800 rpm, the results would be like:
At Sea Level ............ Power .............. Flexibility
Throat ...................... 40-45 DCOE ... 40 DCOE
Choke ...................... 35 .................... 33
Main Jet ................... 140 .................. 135
Emulsion Tube ......... F9/ F16/ F2 ..... F9/ F16/ F2
Main Air Corrector ... 180 .................. 180
Idle Jet ...................... 50f9 ................ 50f9
Pump Jet .................. 40 .................... 40
Aux Venturi ............... 4.5 ................... 4.5

Carbs aren't like fuel injection with sensors and feedback loops to make certain the predicted happens. Just because someone else has had success with a DCOE set-up on their engine that's a clone of yours, don't expect to get the same results in your engine. Carbs are affected by everything from production tolerances to weather, elevation, weight of the car and final drive ratio. Plan on doing some tuning.

Regards,
Tim Engel
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