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Author
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Topic: "Tear drop boss" on alternator?
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Fastback68
Gearhead Posts: 3170
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 03-29-2005 04:05 AM
   
Could someone translate this NPD-ese for me? According to my catalogue, early '68 alternators had a tear drop boss, and later ones didn't.
Usual story - I have a pile of old alternators, and if I'm going to remove the highly functional Nippon Denso one, I might as well pretend to be concourse.
Thanks,
Simon
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Rory McNeil
Gearhead Posts: 1552
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 03-30-2005 10:28 AM
I`m not positive is this is what they are refering to or not, but the earlier Ford alternators have a rounded boss for the alt. adjusting arm, where the later units had a square boss. However, I always thought that this change occured later on, maybe more like the mid 70`s, but I`m not sure.------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA M/Stock 302 5speed. [email protected]
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd
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Scott H
Journeyman Posts: 93
From: Chicago area
Registered: Mar 2005
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posted 03-30-2005 10:46 AM
Simon,
Look at the back of the alternators, you should find at least one in your pile that looks like a teardrop shape where the wires are.
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SteveLaRiviere
Administrator Posts: 43395
From: Saco, Maine
Registered: May 99
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posted 03-30-2005 11:13 AM
I've been mulling this over, too. I remember the older alternators had the rounded adjustment lug like Rory mentioned, but I seem to remember that later alternators had a more rounded shape on the pivot bolt boss.I guess I need to get my Mannel book or my component identifier manual to see what they say. ------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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Fastback68
Gearhead Posts: 3170
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-01-2005 01:56 AM
Well, I've found one Autolite with a D0 casting and it has a raised tear drop shape (sort of) that runs around the boss that they all have right in the center at the back, and then around one of the wire connectors.
I think I'm gonna drop Rick at NPD a line.
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427Fastback
Gearhead Posts: 113
From: N.Vancouver.B.C
Registered: Jan 2005
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posted 04-01-2005 07:24 PM
I have an original Autolite alt here.It does have the rounded lug for the adjuster as apposed to the square one.Also there is a tear drop cast into the back of case and there is a terminal(orange) at the point of the teardrop.It also says AUTOLITE in there.------------------
68 Fastback 427MR 4 spd.Deluxe interior,8000 tach,140 speedo,am/fm,tilt.
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Fastback68
Gearhead Posts: 3170
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-29-2005 02:54 AM
Yup, that's the tear drop all right. It's about 2.5 inches long. I just looked at a pile of Mustang alternators, and it's clear as day on the older ones. On three from 71-3 cars, there's a sort of nondescript shape instead.
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