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mgspeed
Samba Member
Joined: June 11, 2021
Posts: 33
Location: Dallas
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 Posted: Sun Nov 27, 2022 2:52 pm Post subject: Idle mixture screw replacement? |
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As I further dive into my dear bus and try to get things back to stock my latest discovery has shocked and surprised me - the idle mixture/volume screw for the right carb is completely missing. Pic attached for clarity of where it goes, hole at the bottom of the pic. I'm not sure if they are different right from left. I couldn't swap them but it might just be that the threads are a bit buggered.
It's a testament to the desire of these things to run that I've managed to drive a couple hundred miles, even if it was running at high idle!
Any suggestions on where to find one? I'm striking out in the classifieds, Bus Depot and JBugs.
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Proud custodian of Julius
A 1972 Tin Top orange beauty |
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SGKent 
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
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| Posted: Sun Nov 27, 2022 3:22 pm Post subject: Re: Idle mixture screw replacement? |
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I would look around under the carb area, that is historically where things like that hide when they fall off.
That said. that carb looks awful. Consider sending both to Tim at Volkzbitz to be rebuilt. He may have the part in a core. Or buy a core and use the part from it.
https://www.volkzbitz.com/
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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mgspeed
Samba Member
Joined: June 11, 2021
Posts: 33
Location: Dallas
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| Posted: Sun Nov 27, 2022 3:26 pm Post subject: Re: Idle mixture screw replacement? |
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Yep, definitely not pretty, but it looks better than it did when I pulled it out!
I looked around in there because I can't imagine any vehicle running without that big of a leak, but no luck so far. I'll check out Tim, might be time.
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Proud custodian of Julius
A 1972 Tin Top orange beauty |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51152
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Sun Nov 27, 2022 4:33 pm Post subject: Re: Idle mixture screw replacement? |
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Blah...., those look awful.
X2 on having Tim work his magic on them, it's money well spent.
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mikedjames
Samba Member
Joined: July 02, 2012
Posts: 2743
Location: Hamble, Hampshire, UK
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| Posted: Thu Dec 01, 2022 9:58 am Post subject: Re: Idle mixture screw replacement? |
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Judging by the state of the tag on the idle shutoff valve, that carburettor has been set up without a working idle circuit, so the missing screw has little effect.
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Ancient vehicles and vessels
1974 VW T2 : Devon Eurovette camper with 1641 DP T1 engine, Progressive carb, full flow oil cooler, EDIS crank timed ignition.
Engine 1: 40k miles (rocker shaft clip fell off), Engine 2: 30k miles (rebuild, dropped valve). Engine 3: a JK Preservation Parts "new" engine, aluminium case: 26k miles: new top end.
Gearbox rebuild 2021 by Bears.
1979 Westerly GK24 24 foot racer/cruiser yacht Forethought of Gosport.
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