Fw: AMC15/ Dana 30

["Geoff Harrison" <geoff_h@xxxxxxxxxxxxxxxx>]

----- Original Message ----- 
From: "Jim Blair" <carnuck@xxxxxxxxxxx>
To: "amc" <mail@xxxxxxxxxxxx>
Sent: Thursday, June 09, 2005 6:08 PM
Subject: Re: AMC15/ Dana 30


> A: Not sure about the EZ locker, but for a street/strip car I would like 
> to put in an ARB! limited slip for highway, and locked for the strip at 
> the flick of a switch!
>
> From: "Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>
> To: <mail@xxxxxxxxxxxx>
> Subject: Re: AMC15/ Dana 30
> Date: Wed, 8 Jun 2005 23:10:49 -0500
>
>
> snip
> " From: "Mark Price" <mprice@xxxxxxxxxx>
> "
> " I see on Summit that there is a detroit E-Z locker for the Dana 30.
> "   I wonder will it fit in a 1969 AMC 15 open carrier?
>
> From: sandwichmaker
> d30, dunno.  i'd tend to doubt it.  d35, yes.
> snip
>
> Just wondering on this..............
> A locker acts differently than a Twin Grip, correct?
> The locker is not as "streetable" as the Twin Grip?
> Doesn't the locker sort-of ratchet instead of smoothly transfer power?
> The locker is more noisy than a twin grip?
>
> I've never had a locker or seen one but I am under the assumption that 
> they
> are intended for off road use, and I don't really know that for sure.
> Can anyone help answer these questions?
>
> Thanks,
>
> Armand
The Detroit Locker is noisy on tight turns. I thought I'd broken the diff on 
my mates GT Falcon
when I heard it the first time. You are right about the ratchet concept. Its 
more like a dog clutch
between the axle halves. IIRC a spring engages the clutch, which has angled 
dogs, so they can push apart under high load. I don't know about the off 
road use, but they were options on Hi performance Ausie Fords for quite a 
while. The norm on saloon racing in those days, on Fords
in a 9".  Good on dry roads in a straight line. Can be unpredictable in the 
wet if your pushing it a bit. For normal road use I stay with the Twin Grip, 
which is similar to the PosiTraction, I think.

Geoff