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Author Topic: vortech pullies; what size for how much boost? Elapid GOROBGO Member # 50 posted                                 V1 S-Trim in my 98 cobra anyone? [ November 21, 2002, 08:58 PM: Message edited by: rob ] -------------------- 98 Cobra 83 Notch rolling chassis - fs Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000  |  : Elapid GOROBGO Member # 50 posted                                 Well, Rob...it depends a lot on the efficiency of your motor, if you have increased flow capability, you will see less pressure on the gauge, if the intake tract is restricted, you will see more pressure on the gauge. from what i can find, a 3.6" pulley should give between 6 and 8 psi of boost, a 3.125" pulley should net 10-12 psi, and the smallest diameter pulley would give around 20 psi of boost... that's with an unrestricted intake tract. -------------------- 98 Cobra 83 Notch rolling chassis - fs Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000  |  : liftedF150 ¯ Member # 868 posted                              hahahhaha you having fun talking to urself? -------------------- GO SHARKS! Posts: 3259 | From: Discovery Bay | Registered: Feb 2002  |  : Bill/APEX Motorsports ¯ Member # 636 posted                                 Rob, did you forget to take your meds this morning? -------------------- Bill Kaiser APEX Motorsports Santa Clara www.apexmotorsports.com 408-562-1000 bill@apexmotorsports.com Posts: 488 | From: Santa Clara, CA | Registered: Dec 2001  |  : Stimson _ Member # 51 posted                              Looks like someone left themselves logged in on their friends computer Posts: 2373 | Registered: Jun 2000  |  : Elapid GOROBGO Member # 50 posted                                 nope, i did research on my own after i realized that i would get no answer here! thought i would share what i learned just in case anyone cared. medicated and dedicated! -------------------- 98 Cobra 83 Notch rolling chassis - fs Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000  |  : Elapid GOROBGO Member # 50 posted                                 hey bill! just the man i needed to talk to! I have a dyno tune session scheduled on the 30th, i'd like to up the boost a bit but am unsure of which pulley to buy. do you guys stock different pulley sizes so we can figure out what would be the best for my setup? or should i bring what i want on there? I want to have everything ready so there are no problems, ya know?! -------------------- 98 Cobra 83 Notch rolling chassis - fs Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000  |  : TRY2PAZ ¯ Member # 97 posted                                 Do you have an intercooler? Makes a differance. Wikd281 has extra pullies. I would not go any lower than a 3.33 with out a intercooler. That should be good to 10lbs. -------------------- http://www.fnsweet.com/pics/events/sj_gtg_1020/sj_gtg1020_30.jpg Posts: 4033 | From: Bay Area, CA | Registered: Dec 2000  |  : Elapid GOROBGO Member # 50 posted                                 no intercooler, thanks for the info! -------------------- 98 Cobra 83 Notch rolling chassis - fs Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000  |  :

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