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| General Registry Discussion Topics of Interest (Mach 1 Related or otherwise) for discussions that don't fit other forums. |
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06-23-2017, 10:26 AM
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#1 |
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Registered User
 Join Date: Jan 2013
Location: San Diego, CA
Posts: 1,104
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8 rib swap people
Can one of you measure the diameter of the alternator pulley? I did a 200amp upgrade on my alternator and now it won't charge at idle. But charges great once the RPM's hit 1000. I'm trying to find a smaller alternator pulley. The issue is it's an 8 rib pulley.
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New Ride: 2004 Mystichrome Cobra-Accufab SBTB and plenum, Steeda 2.8" upper, Bassani X, Borla Stingers, Mcleod RXT, MGW shifter, Level 5 halfshafts, chrome FR500's, Stiffler's FIT system and DS safety loop, GT pumps, BA3000, tuned by owner |
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06-23-2017, 11:45 AM
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#2 |
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Registered User
 Join Date: Mar 2011
Location: Fort Worth, TX
Posts: 209
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Re: 8 rib swap people
Metco sells 8 rib alternator pulleys of various size. I believe the stock pulley is 2.73"
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06-23-2017, 12:16 PM
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#3 |
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Can't be bridled
 
Join Date: Sep 2007
Location: Texas
Posts: 7,006
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Re: 8 rib swap people
What size pulley have you got on there? I've got the stock 8 rib alt pulley from my eaton swap. Measures between 2.5 and 3 inches. You can have it if you want.
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2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
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06-23-2017, 01:45 PM
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#4 |
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Registered User
Join Date: Jan 2013
Location: San Diego, CA
Posts: 1,104
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Re: 8 rib swap people
Stocker is 2.6". At least the one I have is. Metco's pullies are bigger in order to slow the alternator down. I need to spin it faster. I found a 2" on Jegs I might grab. Or I'll just throw the 4lb lower I have on. Decisions decisions.
__________________
New Ride: 2004 Mystichrome Cobra-Accufab SBTB and plenum, Steeda 2.8" upper, Bassani X, Borla Stingers, Mcleod RXT, MGW shifter, Level 5 halfshafts, chrome FR500's, Stiffler's FIT system and DS safety loop, GT pumps, BA3000, tuned by owner |
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07-05-2017, 08:40 AM
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#5 |
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Mach-o-holic
Join Date: May 2010
Location: La La Land
Posts: 1,276
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Re: 8 rib swap people
Did you upgrade the power (and ground) wires? It should still charge either way, but with higher output units it can be necessary or you get a lot of heat/inefficiency
https://youtu.be/0j6HM11D2dw
__________________
2003 Mach 1 TR 5 Speed IUP Bolt ons: You name it! 4.10s too  2004 Cobra Screaming Yellow   2.3L Whipple Gear install vid https://www.youtube.com/watch?v=tJrAIDCpbDI Clutch Replacement Vid http://www.youtube.com/watch?v=UFr0Rur_EWc Wideband Install Vid http://www.youtube.com/watch?v=GmL1KBmWyhg |
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07-06-2017, 06:24 PM
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#6 |
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SVT
 
Join Date: Jun 2010
Location: Northern California
Posts: 812
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Re: 8 rib swap people
i vote for the 4# lower to be installed lol, should offset it?
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2001 Zinc yellow SVT Cobra Forged 11.5CR 284ci Comp 106500 cams - Degreed 01 cobra Heads - tastefully modded Roys ported/polished Intake Kooks longtubes, Magnaflow catback D&D T3650, Mgw shifted FTB Goodies, 4.30s, FRPP diff cover, 31 splined IRS 04 cobra interior , black termy seats, Speedhut gauges Tubular K, MM coilovers/ Koni SA yellows Starkweather tuned, 24* timing on 91 octane 11.7 @ 117mph 1.62 60ft. Raceweight 3200lbs Next up:Sullivan intake and hat, self tuning.. 
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07-08-2017, 12:46 AM
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#7 | ||
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Registered User
Join Date: Jan 2013
Location: San Diego, CA
Posts: 1,104
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Quote:
Quote:
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__________________
New Ride: 2004 Mystichrome Cobra-Accufab SBTB and plenum, Steeda 2.8" upper, Bassani X, Borla Stingers, Mcleod RXT, MGW shifter, Level 5 halfshafts, chrome FR500's, Stiffler's FIT system and DS safety loop, GT pumps, BA3000, tuned by owner |
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