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ascMcLaren Enthusiasts An asc McLaren forum for ALL Mustang and Capri based cars modified by Automotive Speciality Corporation, a Division of American Sunroof Corporation. (a trademarked corporation) with no affilation to this site.
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knsstang
Joined: 27 Apr 2005 Posts: 197 Location: Detroit, Michigan
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Posted: Sat Sep 24, 2016 1:11 am Post subject: Alternator Upgrade |
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Hello all.. I have recently started driving my car again( Motorcycle's down) and I forgot how bad the/my charging system is in this car. I plan on doing the a 3g alternator upgrade and was wondering if anyone in here has down one on a McLaren?
The reason that I ask is because I swapped the lestik for a regular alternator years ago and I have a thick battery wire that was running to the lestik. Can I use that battery wire to run from the new alternator as it already goes to the starter relay. Thanks for any advice.
edit: I looked up the part #( I think it's POSITIVE CABLE (E8ZZ-14300-A) for your 1989 Ford Mustang LX with a 5.0L V8 CYLINDER, W/72 AMP BATTERY) so I think it will work. http://www.oemfordpart.com/ford/mustang/e8zz14300a/1989-year/lx-trim/5-0l-v8-gas-engine/electrical-cat/battery-scat/?part_name=positive-cable _________________ 1989 Royal Gold Metallic #095 (225Hp)
2016 Kawasaki ZX14R (199.9Hp) (26,200 miles)
2013 Kia Optima (275Hp)
2012 GMC Yukon Denali (403Hp) |
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svo413
Joined: 29 Aug 2004 Posts: 752 Location: San Mateo, California
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Posted: Sat Sep 24, 2016 7:26 am Post subject: Cable |
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That would apear to be the service replacement positive battery cable. The cable is certainly heavy enough and really has no affect on the cahargng output of the alternator. I have found another replacement cable which looks closer to the original. I will post some info on it. There is also new reproduction one out but I have not see it yet. _________________ Kevin Gold card MCA Judge for Fox Body
85 ASC Vert #612205
88 ASC Vert #542 20,550 miles
84 SVO 24,000 miles, 84 GT Turbo Vert.
03 Mach I, 89 LX Vert, 74 Mustang II
14 CA Special, 69 Mustang coupe, 07 GT500
67 T-bird, 15 F150 Tuscany, 16 F250 |
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svo413
Joined: 29 Aug 2004 Posts: 752 Location: San Mateo, California
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Posted: Sat Sep 24, 2016 8:09 am Post subject: Cable |
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The e8zz cable uses a brass plated battery connector. It is certainly a quality design. I have found Motorcraft wc-8902 to be a closer match to the original. Just remove the corrogated tubing and the terminal cover and it will look just like the original except no number stamped on the cable. Prices for this part are pretty reasonable if you search eBay. A good used part may exceed $100. _________________ Kevin Gold card MCA Judge for Fox Body
85 ASC Vert #612205
88 ASC Vert #542 20,550 miles
84 SVO 24,000 miles, 84 GT Turbo Vert.
03 Mach I, 89 LX Vert, 74 Mustang II
14 CA Special, 69 Mustang coupe, 07 GT500
67 T-bird, 15 F150 Tuscany, 16 F250 |
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knsstang
Joined: 27 Apr 2005 Posts: 197 Location: Detroit, Michigan
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Posted: Sat Sep 24, 2016 3:43 pm Post subject: |
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Does anyone know if the original one in the car is a 4gauge or 6gauge positive cable. All of the upgrades that i've read said use a 4gauge wire. I was thinking that if i already have one in the car, I don't have to buy a new one. _________________ 1989 Royal Gold Metallic #095 (225Hp)
2016 Kawasaki ZX14R (199.9Hp) (26,200 miles)
2013 Kia Optima (275Hp)
2012 GMC Yukon Denali (403Hp) |
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svo413
Joined: 29 Aug 2004 Posts: 752 Location: San Mateo, California
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Posted: Sat Sep 24, 2016 8:21 pm Post subject: 3G upgrade |
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I'm not a big fan of the 3 g upgrade as there is plenty of amps available in the stock looking unit.
The main issues with making the upgrade is getting the right sized alternator to fit properly and then the wiring. The second, is a wiring issue iand to install a large enough wire from the 100 amp alternator to the common connection point (starter solenoid). The battery cable is not the weak point. The factory alternator charging wire is not capable of 100 amps. Also when adding a 100 amp power source, it would be best to have it fused to prevent a fire. _________________ Kevin Gold card MCA Judge for Fox Body
85 ASC Vert #612205
88 ASC Vert #542 20,550 miles
84 SVO 24,000 miles, 84 GT Turbo Vert.
03 Mach I, 89 LX Vert, 74 Mustang II
14 CA Special, 69 Mustang coupe, 07 GT500
67 T-bird, 15 F150 Tuscany, 16 F250 |
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knsstang
Joined: 27 Apr 2005 Posts: 197 Location: Detroit, Michigan
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Posted: Sat Sep 24, 2016 8:43 pm Post subject: Re: 3G upgrade |
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svo413 wrote: | I'm not a big fan of the 3 g upgrade as there is plenty of amps available in the stock looking unit.
The main issues with making the upgrade is getting the right sized alternator to fit properly and then the wiring. The second, is a wiring issue iand to install a large enough wire from the 100 amp alternator to the common connection point (starter solenoid). The battery cable is not the weak point. The factory alternator charging wire is not capable of 100 amps. Also when adding a 100 amp power source, it would be best to have it fused to prevent a fire. |
Thanks... _________________ 1989 Royal Gold Metallic #095 (225Hp)
2016 Kawasaki ZX14R (199.9Hp) (26,200 miles)
2013 Kia Optima (275Hp)
2012 GMC Yukon Denali (403Hp) |
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4-barrel Mike
Joined: 30 Jan 2016 Posts: 159 Location: Portland, OR
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Posted: Tue Oct 11, 2016 5:14 am Post subject: |
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The 1G alternator in my '85 recently died. I subbed in a marginal 1G that had been sitting on the shelf for 20 years or more; it wasn't satisfactory.
I had planned on updating with a reasonably new 3G that had been in my 2.3T '90 Mustang, so now was the time. Using a barely used alternator-to-starter solenoid cable and alternator wiring harness from a '94 3.8l Mustang, the 3G was quickly and easily installed.
14+ volts at idle with maximum load (EVERYTHING turned on) makes the minor effort WELL worthwhile.
Mike _________________ 1985 5.0 SC, white/blue, modded by POs (more mods coming) |
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