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vanmansl6
 Post subject: BBD step up pistin
PostPosted: Wed Oct 30, 2013 3:52 pm 
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4 BBL ''Hyper-Pak''
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Joined: Sat Dec 03, 2011 2:12 pm
Posts: 49
Location: Pennsylvania
Car Model:
Any clues on how to adjust the step up piston? I stupidly turned the hex screw out

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83 B150 /6 4spd
97 JeepWrangler Sport 4.0
2001 VW Beetle TDI 5sp
2000 Nissan Xterra
73 Dodge B300 van
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Reed
 Post subject:
PostPosted: Wed Oct 30, 2013 3:54 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13104
Location: Fircrest, WA
Car Model: 76 D100
Quote:
Here is the Carter BBD operation and repair manual (pdf)
Give thanks to Uncle Dan!

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Casually looking for a Clifford hyperpak intake for cheap.
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vanmansl6
 Post subject:
PostPosted: Wed Oct 30, 2013 4:05 pm 
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4 BBL ''Hyper-Pak''
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Joined: Sat Dec 03, 2011 2:12 pm
Posts: 49
Location: Pennsylvania
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Thanks once again Reed. The 83 van has been running pretty good the last couple of months, but I suddenly have some carb issues. It has a stumble and spudders at low speeds- Im thinking about going to a one barrel for I cant get better then 10 mpg

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83 B150 /6 4spd
97 JeepWrangler Sport 4.0
2001 VW Beetle TDI 5sp
2000 Nissan Xterra
73 Dodge B300 van
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Reed
 Post subject:
PostPosted: Wed Oct 30, 2013 4:14 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13104
Location: Fircrest, WA
Car Model: 76 D100
Yep, vans get in the 10-13 MPG range. It takes some serious tuning and careful driving to get better than that. Make sure the carb is adjusted correctly, make sure you have no vacuum leaks, play with your timing curve, never go over 55 MPH, run as lightweight as possible, and install a vacuum gauge and drive to maximize vacuum.

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