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type3square Samba Member
Joined: December 16, 2007 Posts: 13 Location: helena MT
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Posted: Sun Aug 10, 2008 5:23 pm Post subject: my baby dells', let me show you them (with a twist) |
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ok. i was sick of the stupid weber progressive on the liquid cooled vdub so i cut up some old manifolds i had laying around.
im having a little trouble tuning them. as expected they ran awesome on my old square, but in the new application they run way to rich. can someone explain witch jets are witch?
thanks in advance (ps the whoretex sucks for carb help)
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beetleboy58 Samba Conquestador

Joined: February 27, 2006 Posts: 1073
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Posted: Sun Aug 10, 2008 5:36 pm Post subject: |
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| wow....uh, engine cc? Valve sizes? What vents and jets in those carbs? |
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shegel Samba Member

Joined: November 03, 2006 Posts: 378 Location: Kennewick, WA
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Posted: Sun Aug 10, 2008 5:37 pm Post subject: |
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well i cant really help you. but i like the way it looks. _________________ My stuff with engines
1969 Karmann Ghia
1999 Jetta tdi
1977 Honda gl1000
1993 Honda xr250L |
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type3square Samba Member
Joined: December 16, 2007 Posts: 13 Location: helena MT
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Posted: Sun Aug 10, 2008 5:53 pm Post subject: |
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specs:
motor: 1.8 sohc 11:1 compression, 41MM intake valves, 37mm exhausts
and here are the jets
i hope this makes sence.. |
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mharney Samba Member
Joined: June 01, 2002 Posts: 8353
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Posted: Sun Aug 10, 2008 6:52 pm Post subject: |
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The 45s are idle jets
The 50s are pump jets
The 170s are air correction jets
The 128s are main jets
You need to plug those vacuum ports.
Rich where.. low speed circuit or in main circuit? |
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type3square Samba Member
Joined: December 16, 2007 Posts: 13 Location: helena MT
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Posted: Sun Aug 10, 2008 7:10 pm Post subject: |
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awesome thanks for the info. i got her to run way better. found out i had the timing way to far advanced. I backed it off to around 4-5 degrees btdc. runs way better.
once i get to driving her (still gotta figure out throttle linkage) ill report back with how it runs.
video of her running soon, takes forever to upload video's |
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type3square Samba Member
Joined: December 16, 2007 Posts: 13 Location: helena MT
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Posted: Sun Aug 10, 2008 7:42 pm Post subject: |
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krusher Samba Member

Joined: September 24, 2002 Posts: 7661 Location: europe
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type3square Samba Member
Joined: December 16, 2007 Posts: 13 Location: helena MT
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Posted: Tue Aug 12, 2008 7:18 pm Post subject: |
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ok runs rich in the main circuit. i finally got to drive her today and it spits, sputters, back fires and spits back through the carbs. what jets should i be lookin to order?
seems to run A++ at idle |
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mharney Samba Member
Joined: June 01, 2002 Posts: 8353
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Posted: Tue Aug 12, 2008 8:57 pm Post subject: |
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| Spitting up through the carb is lean. What size venturis? Did you set the floats correctly? |
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type3square Samba Member
Joined: December 16, 2007 Posts: 13 Location: helena MT
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Posted: Tue Aug 12, 2008 9:04 pm Post subject: |
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| when i look down the carb i can see a 27 stamped on what appears to me the main venturi. |
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mharney Samba Member
Joined: June 01, 2002 Posts: 8353
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Posted: Tue Aug 12, 2008 9:11 pm Post subject: |
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At what throttle position can you get it to sneeze up through the carbs? If early in the throttle your idle circuit is a little lean.. if you get about 1/3 of the way open before it acts up it is either float settings or main jets, or some of both.
If it is later in the pedal, you might want to try a slightly larger main jet.. like a 135 or so. Make sure your timing is right too. Timing being off will cause a lot of stuff like this.
And set your floats.
And make sure you don't have vacuum leaks.
And stuff. |
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type3square Samba Member
Joined: December 16, 2007 Posts: 13 Location: helena MT
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Posted: Tue Aug 12, 2008 9:14 pm Post subject: |
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| haha i should just buy the dang book shouldnt i? |
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Roadhog_ Samba Member
Joined: May 23, 2008 Posts: 9 Location: Montana, USA
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Posted: Tue Aug 12, 2008 9:59 pm Post subject: |
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| eheh. looks awesome! |
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Jason C Samba Member

Joined: June 14, 2005 Posts: 1028 Location: Portland Oregon
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Posted: Tue Aug 12, 2008 11:56 pm Post subject: |
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| mharney wrote: |
if you get about 1/3 of the way open before it acts up it is either float settings or main jets, or some of both.
And set your floats.
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How do you set your floats? I didn't realize they would affect the way it ran. _________________ Throw me a bone here. All I wanted were
sharks with friggen laser beams attached to their heads.
64 Bug |
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