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 General_Failure
A.k.a.: Tristan
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| posted on April 25th, 2008 at 10:37 AM |
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Purpose of venturi lock screw?
What's the purpose of the venturi lock screw? Don't say to lock the venturi. In a classic example of my lack of observation skills I realised that I
have the nice little pointy ended one in the left hand carb of my 1800, but the right hand side... well it had a tinware screw in it. You know the
sort with the little cutting in the thread for scraping up gunk? One of them. On that same carby I also noticed that the choke butterfly stop screw
that protrudes into the throat is some kind of countersunk head bolt from a hardware store, which would probably mean an imperial thread. Eeee!
I pulled out the tinware screw and screwed in a new flat ended HT bolt. Not optimal, but the cutaway in the thread couldn't have been helping things.
So, would the completely wrong type of screw be messing with things?
Thanks.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.
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greedy53
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| posted on April 25th, 2008 at 08:20 PM |
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they hold the tube in place thats all but thats enough
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General_Failure
A.k.a.: Tristan
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| posted on April 26th, 2008 at 09:53 AM |
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Right, so the reason it is a grub screw (Did I actually remember the terminology for a change?) is to clamp the tube. Well it has never moved so I
guess it'll do. I have a funny 30PICT, or something like it that I pulled off my S beetle years ago. I'll see if it has a compatible screw on it
when I get the time.
That carby I removed had a stack of vacuum lines that were blanked and an adapter plate so it could fit on the T tube. I still don't get why anyone
would go to so much trouble to fit a smaller carburettor to it.
Thanks for the answer by the way.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.
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 matberry
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| posted on April 26th, 2008 at 10:09 AM |
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| Quote: | Originally
posted by General_Failure
Right, so the reason it is a grub screw (Did I actually remember the terminology for a change?) is to clamp the tube. Well it has never moved so I
guess it'll do. I have a funny 30PICT, or something like it that I pulled off my S beetle years ago. I'll see if it has a compatible screw on it
when I get the time.
That carby I removed had a stack of vacuum lines that were blanked and an adapter plate so it could fit on the T tube. I still don't get why anyone
would go to so much trouble to fit a smaller carburettor to it.
Thanks for the answer by the way.
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Cause it was NEW
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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 vw54
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| posted on April 26th, 2008 at 10:15 AM |
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| Quote: |
to lock the venturi
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thats exactly what its for
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General_Failure
A.k.a.: Tristan
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| posted on April 27th, 2008 at 07:42 AM |
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| Quote: | Originally
posted by vw54
| Quote: |
to lock the venturi
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thats exactly what its for
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Well... yeah. I was just worried that the point on the end of the screw had some kind of significance besides superior locking ability. That's all.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.
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Joel
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| posted on April 27th, 2008 at 08:20 AM |
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Tristan the beetie single solex carbs have pressed in vents
so no grub screw on them
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General_Failure
A.k.a.: Tristan
Custom Title Time!
Use your head, don't abuse it!
Posts: 1036
Threads: 107
Registered: June 15th, 2004
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Location: Peaceful Finley, NSW
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Mood: Not too bad. Thanks for asking!
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| posted on April 27th, 2008 at 06:57 PM |
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Oh well. Guess I can use it to throw at the neighbours cats or something then 
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.
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