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flightofphx
Samba Member
Joined: September 11, 2017
Posts: 114
Location: AZ
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 Posted: Fri May 14, 2021 10:29 pm Post subject: Can you help me with this linkage? 48 IDA |
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I recently purchased a car with a 2276 and 48 IDA carbs. I have never had IDA's before, but have had dual Weber carbs. On my last car with baby Webers, each carb had its own idle screw (throttle stop screw) so you could set idle on each carb. This setup only has a throttle stop screw on the right carb, and no screw at all on the left carb. I ordered a screw and spring and the CB True Arm kit and I am awaiting them in shipment.
I am not sure. I have never seen duals set up this way. Has anyone seen this setup that may be able to explain?
Last edited by flightofphx on Sun May 16, 2021 9:14 pm; edited 1 time in total |
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66brm
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Joined: January 25, 2010
Posts: 3676
Location: Perth Western Australia
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| Posted: Fri May 14, 2021 10:36 pm Post subject: Re: Can you help me with this linkage? 48 IDA |
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I bet there's an idle speed screw on the other end of that carb
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Dale M.
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Joined: April 12, 2006
Posts: 20380
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Sat May 15, 2021 6:55 am Post subject: Re: Can you help me with this linkage? 48 IDA |
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The linkage is pretty much standard.... I'm with 66brm, idle speed screw may be on back side of left carb.... Years ago carbs were set up as left and right out of the box, then that all changed and then they only came as one assembly, so on one carb the throttle arm and idles speed screw had to be moved from "rear" of carb to front.... May previous owner/builder did not move the screw.... Also you mentioned baby Weber's, but do you realize you should disconnect linkage to do carb tune then when you reconnect be aware that there is not any change in settings (tune)...
Also
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76940
Location: Sneaking up behind you
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| Posted: Sat May 15, 2021 7:07 am Post subject: Re: Can you help me with this linkage? 48 IDA |
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FYI...
You'll want to replace the rear tin, there are opening for heat risers. These are right above the #2 and #4 exhaust tubes and will let hot air into the engine compartment. Until you get a rear tin with no fresh air or heart riser openings, put some foil tape to close of the holes.
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74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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flightofphx
Samba Member
Joined: September 11, 2017
Posts: 114
Location: AZ
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| Posted: Sat May 15, 2021 1:52 pm Post subject: Re: Can you help me with this linkage? 48 IDA |
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| Glenn wrote: |
FYI...
You'll want to replace the rear tin, there are opening for heat risers. These are right above the #2 and #4 exhaust tubes and will let hot air into the engine compartment. Until you get a rear tin with no fresh air or heart riser openings, put some foil tape to close of the holes. |
Glenn - yes, I have rear tin w/o holes and w/o riser openings being shipped now. I also got some hoover bits to install.
Last edited by flightofphx on Sat May 15, 2021 2:10 pm; edited 1 time in total |
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flightofphx
Samba Member
Joined: September 11, 2017
Posts: 114
Location: AZ
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| Posted: Sat May 15, 2021 1:54 pm Post subject: Re: Can you help me with this linkage? 48 IDA |
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| Dale M. wrote: |
The linkage is pretty much standard.... I'm with 66brm, idle speed screw may be on back side of left carb.... Years ago carbs were set up as left and right out of the box, then that all changed and then they only came as one assembly, so on one carb the throttle arm and idles speed screw had to be moved from "rear" of carb to front.... May previous owner/builder did not move the screw.... Also you mentioned baby Weber's, but do you realize you should disconnect linkage to do carb tune then when you reconnect be aware that there is not any change in settings (tune)...
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Yes, I always disconnected one side and pinched off the balance tube when adjusting the Webers. |
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