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 11-29-2007, 09:52 PM | #1 | ||
Ready for Disaster   1990 YJ Wrangler  Join Date: Mar 2006 Location: Macomb, Illinois Posts: 1,299  | forced air induction/manifold vaccum question
__________________ 1990 YJ, Colorado Red with 'Laredo' markings, 4.2L, TF999, NP231, Valvoline Syn fluids, Weber 32/36, Nutter Bypass, Dana 30/35, 16" Electric Fan, Optima Yellow Top, 140amp alt., K&N Air Filter, Cherry Bomb muffler, SRC Front Bumper, CH&F Shackles, KC 100w Daylighters, Homemade Lightbar, Rear Aux lights, Cobra CB/PA/WX, 102" Whip Ant., 400 watt power inverter, 2 fire extinguishers, Mobile Internet & WiFi equipped. Daily Driver since April 23rd, 2003 Northern Illinois Extreme Jeep Club Member www.extremejeepclub.com Weber 32/36 Install -> http://www.jeepforum.com/forum/f12/weber-32-36-install-write-up-382309/ Early YJ Club Member #37 For anyone with a 4.2L --> http://groups.jeepforum.com/258s_Unite | ||
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| 12-01-2007, 10:57 AM | #2 |
Registered User  1997 TJ Wrangler | you loose vacuum during boost, and the only time boost is made is when the engine is undera load I.E. in gear trying to move the tires. Vac is restored when the egine is reving down and the pistons begin to draw air in instead of being pushed by boost. Vac is always there when you need it for brakes and such __________________ Always keep an open mind or you might explode |
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| 12-01-2007, 02:31 PM | #3 |
Ready for Disaster 1990 YJ Wrangler Join Date: Mar 2006 Location: Macomb, Illinois Posts: 1,299 | Ok, That's what I was thinking, so on a carbed engine all the vacuum powered stuff would still work like they should when it was natural aspiration? Oh, and I see you joined the Extreme Jeepers, Welcome! __________________ 1990 YJ, Colorado Red with 'Laredo' markings, 4.2L, TF999, NP231, Valvoline Syn fluids, Weber 32/36, Nutter Bypass, Dana 30/35, 16" Electric Fan, Optima Yellow Top, 140amp alt., K&N Air Filter, Cherry Bomb muffler, SRC Front Bumper, CH&F Shackles, KC 100w Daylighters, Homemade Lightbar, Rear Aux lights, Cobra CB/PA/WX, 102" Whip Ant., 400 watt power inverter, 2 fire extinguishers, Mobile Internet & WiFi equipped. Daily Driver since April 23rd, 2003 Northern Illinois Extreme Jeep Club Member www.extremejeepclub.com Weber 32/36 Install -> http://www.jeepforum.com/forum/showthread.php?t=382309 Early YJ Club Member #37 For anyone with a 4.2L --> http://groups.jeepforum.com/258s_Unite |
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