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volksbug70
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Joined: August 22, 2005
Posts: 116
Location: Macclenny, FL
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 Posted: Sun May 23, 2010 11:12 pm Post subject: Idle and Power Jets on 30-PICT-3 |
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Okay, just to confirm, the red arrow points to the IDLE jet and the yellow arrow points to the POWER jet on this 30-PICT-3 carburetor in my 1970 Standard MT, 1600SP, right?
<-- Rear of car <--
_________________
~Dave
1970 Beetle "Herbert" (Pics | Website)
-1600cc Single Port
-31-PICT-3 Carburetor
-036 (205T) SVDA Distributor
-Manual Transmission
Last edited by volksbug70 on Sat Jun 05, 2010 9:26 am; edited 1 time in total |
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Greezy Joe
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Location: Crawfordville, Fl
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| Posted: Mon May 24, 2010 11:42 am Post subject: |
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Can't see the pic but there is no power jet. There is an accel pump.
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volksbug70
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Joined: August 22, 2005
Posts: 116
Location: Macclenny, FL
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| Posted: Mon May 24, 2010 1:45 pm Post subject: |
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I'm pretty sure it does, and Rob and Dave seem to think so as well:
| http://www.vw-resource.com/jets.html#aux wrote: | | Note: There is no power jet on the 28 series carburettors or on the first 30 series carburettors, but later 30PICT/1s, and all 30PICT/2, 30PICT/3, 34PICT/3 or /4 and H30/31 carburettors have an Auxiliary or Power jet. |
I guess it's also called the "auxiliary" jet, too.
_________________
~Dave
1970 Beetle "Herbert" (Pics | Website)
-1600cc Single Port
-31-PICT-3 Carburetor
-036 (205T) SVDA Distributor
-Manual Transmission |
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katalla
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Joined: March 15, 2006
Posts: 408
Location: los angeles
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| Posted: Mon May 24, 2010 4:57 pm Post subject: |
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| the yellow one is for cut off valve special to that carb the red is the idle jet |
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David Raistrick
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Joined: January 26, 2004
Posts: 323
Location: Geneva, Florida
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| Posted: Sat Sep 29, 2012 7:52 pm Post subject: Re: Idle and Power Jets on 30-PICT-3 |
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| volksbug70 wrote: | Okay, just to confirm, the red arrow points to the IDLE jet and the yellow arrow points to the POWER jet on this 30-PICT-3 carburetor in my 1970 Standard MT, 1600SP, right?
<-- Rear of car <-- |
It's a thread resurrection, but since no one else actually answered and I spent the time today to figure it out for sure (which is how I found this thread):
Yes - on the 30pict3 and H30/31, the straight (front, yellow) jet is the power/aux fuel jet (generally .65). The angled (rear, red) jet is the pilot/idle jet (generally .50 for beetles, .60 for buses)
Ignore the naysayers who don't realize that the 30pict3 is different from the 30pict2. 
If you want to confirm it for yourself - the idle jet (on -all- carbs with an idle/pilot jet) ends up exiting in a small hole just above the throttle butterfly (and hooked into the various idle adjustment circuits). The power jet (unique for our carbs to 30pict3, h30/31, and 34pict*) ends in a big hole just below the main delivery tube, up high in the throat)
FWIW for the next searcher... |
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sssingletrack
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Joined: September 27, 2012
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Location: UK
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| Posted: Sat Sep 29, 2012 11:52 pm Post subject: |
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I found the opposite myself. If you swap the two round the air bypass screw has to be much further out with a 50 in the port to the Front and the 60(in my case) on the rear.
Meaning the one to the front has to be the idle, as the power jet doesn't come into play until high revs.
That's on a 31 PICT 3 |
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jgrexx
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jgrexx
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