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demon1018
Samba Member
Joined: September 12, 2009
Posts: 930
Location: crystal river, fl
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 Posted: Tue Sep 25, 2012 6:34 pm Post subject: carb throttle blade hole soldered closed |
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| i pulled this carb off a customers bus today and the throttle blade hole was soldered shut. whats the deal ? is it supose to be like that? i never seen this before . i would be afraid the solder would come off and go down the engine. |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51112
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Tue Sep 25, 2012 6:50 pm Post subject: |
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Depends on the solder job, it's a common fix for a 34 PICT 3 when using an 009, SVDA or if the throttle shaft bushings are worn, a pop rivet works too.
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ccpalmer
Samba Member
Joined: September 17, 2006
Posts: 3850
Location: Ann Arbor, Michigan
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| Posted: Tue Sep 25, 2012 6:51 pm Post subject: |
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solder and brass play well together... that being said I'd drill it out.
Common "fix" for the 009 swapped over a DVDA
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'71 Westy |
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old DKP driver
Samba Member
Joined: March 30, 2005
Posts: 4145
Location: Los Gatos,Ca.
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| Posted: Tue Sep 25, 2012 6:56 pm Post subject: carb fix |
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The solder is soft and will exit the tailpipe sooner or later.
thats why the injection nozzle is brass and very soft also.
www.thesamba.com/vw/forum/viewtopic.php?t=322795
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V.W.owner since 1967
Last edited by old DKP driver on Tue Sep 25, 2012 7:51 pm; edited 1 time in total |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50332
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| Posted: Tue Sep 25, 2012 7:17 pm Post subject: |
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| The DVDA, vacuum retard distributor needs more air at idle than the idle circuit on the 34PICT3 carb can supply so the carb was made with a hole in the throttle plate to supply more idle air volume. When the vacuum retard can fails or the dizzy is swapped for an 009 or SVDA then the extra idle air is not needed and will cause the engine to idle too fast and maybe bog coming off idle. The solution is to close off the hole in the throttle plate. Soldering, installing a pop rivet, or even filling hole with JB Weld will work. |
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demon1018
Samba Member
Joined: September 12, 2009
Posts: 930
Location: crystal river, fl
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| Posted: Wed Sep 26, 2012 3:38 am Post subject: |
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| Thanks. That is exactly what I needed to know |
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