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dual carb adjustment

 
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jeff930
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Joined: 12 Sep 2009
Posts: 6
Location: Big Bear Lake, CA

PostPosted: Sun Sep 27, 2009 6:18 pm    Post subject: dual carb adjustment Reply with quote

i have dual webbers on my 1914 motor and they were recently tuned for down the hill but now its about 7000 feet in altitude... what adjustments do i do other then the idle Question Question
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fatalifeaten
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Joined: 03 Feb 2008
Posts: 565
Location: The 480

PostPosted: Tue Sep 29, 2009 12:20 pm    Post subject: Reply with quote

As you go higher, you run richer because the air thins out, so the odds are you're going to either need to tweak your A/F ratio or rejet. Depends on your setup right now and what your tuning elevation is set for currently.

Give this a shot.

http://www.thesamba.com/vw/forum/viewtopic.php?t=328611&highlight=altitude

How are you jetted right now? How is your engine set up? Give us a rundown, as the parts inside will also make a difference in how your jetting should be set.

There's a lot more to it than just changing the idles. The adjustments required will be different for every setup. There's a lot of plug reading and jet tuning inolved and if you're not accustomed to doing it, you'll probably have to make several jet adjustments to get it right.
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