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Lotus Europa Forums => Members Cars => Topic started by: ramiroflores on Tuesday,April 16, 2024, 07:11:17 PM

Title: Block the holes to restrict airflow
Post by: ramiroflores on Tuesday,April 16, 2024, 07:11:17 PM
Hi everybody,

The plan is not to block the holes in the emulsion tube but to limit the airflow (holes?) on the carb face. This is an easy thing to try as it only requires removing the air filter and the plastic cover on the front of the carbs. I had read about blocking them from several sources, so I thought why not give it a try. If it works fine, if not then go back to looking for an alternative. Here's a stolen photo of what I intend to block (or maybe just restrict depending on how things go):

(https://i.postimg.cc/XYqj9SgY/post-12853-0-81668100-1384457219.jpg)

In terms of needles, the carbs have dynojet needles and are located in the center channel. The main jets are 160. At WOT it howls, at idle it's smooth, just exiting idle is problematic.
Title: Re: Block the holes to restrict airflow
Post by: BDA on Tuesday,April 16, 2024, 07:29:11 PM
Sorry I can't help you with your carb issue but I wanted to make sure that I

 :Welcome:  ramiroflores!!!

I know we'd all love to hear more about your baby!!
Title: Re: Block the holes to restrict airflow
Post by: jbcollier on Tuesday,April 16, 2024, 09:27:50 PM
Welcome!

You show a motorcycle carb.  What carb on what engine are you actually referring to?
Title: Re: Block the holes to restrict airflow
Post by: RoddyMac on Wednesday,April 17, 2024, 06:57:35 AM
Hmmmm, this is nearly a verbatim copy of a post I made on the Locost site (part way down the page):  https://locostusa.com/forums/viewtopic.php?f=36&t=15703&start=195 (https://locostusa.com/forums/viewtopic.php?f=36&t=15703&start=195)

In any case, all that was required was going up a few sizes on the pilot jets.
Title: Re: Block the holes to restrict airflow
Post by: Bainford on Wednesday,April 17, 2024, 08:34:42 AM
Welcome to the forum. Good luck with your carb issues. Cheers  :beerchug:
Title: Re: Block the holes to restrict airflow
Post by: Kendo on Wednesday,April 17, 2024, 09:19:44 AM
Keith, who runs https://vintagetechnologygarage.groups.io/g/sidedraft/topics (https://vintagetechnologygarage.groups.io/g/sidedraft/topics) knows a lot about Webers and their tuning. you might get some insight from joining his group.
Title: Re: Block the holes to restrict airflow
Post by: gideon on Wednesday,April 17, 2024, 10:15:38 AM
After checking Roddy's post on the locost forum there's no doubt that ramiroflores simply copied Roddy's old post and changed the first line.  Why would somebody do that?  Ramiro, perhaps you'd like to explain...
Title: Re: Block the holes to restrict airflow
Post by: TurboFource on Wednesday,April 17, 2024, 12:55:30 PM
 ???