Jim,
I agree with Steve. I needed a posi in my Mk II and i insisted with my
mechanic to put in a Jaguar 2.88. I have the wide ratios and I wanted the 3k
cruising revs. I don't know where the posi came from and it was not simple
to find a way to attach the axles. The end result is great and worth every
penny.
Regent in Ottawa, Canada
----- Original Message -----
From: "Steve Laifman" <SLaifman@socal.rr.com>
To: "Jim Ellis" <hunber@bellsouth.net>
Cc: "Tiger's Den" <tigers@autox.team.net>
Sent: Friday, August 15, 2003 2:07 PM
Subject: Re: Dana 44 questions....
> Jim,
>
> I am not sure I understand what you mean about "The 2.88 is just not
> going to do.."
>
> Actually, the 2.88 is the best choice for the rear end gears for this
> car. It allows cruising in high gear at 3,000 rpm doing 72 miles per
> hour. All other conversions use a higher numerical ratio, and are
> really revving high on the freeway. They are doing this to cure a
> problem that is NOT in the rear end, but in the transmission choice made
> by Rootes. They choose to use the "close ratio" gear set. While this
> sounds racy, it isn't. There is no reason in the world to want 60 miles
> an hour in first gear.
>
> In the Mk II the changed their minds, and made the "wide ratio" gear set
> stock. With a 260, it leaves rubber in first, and takes a bite out of
> the pavement in second and third - all with the stock 2.88. The
> difference in rpm, and higher revs, only amounts to a couple of hundred
> rpm, and is nothing at all like the old fashioned "wide". This can all
> be confirmed by the download Bob Hokanson's "Excel Transmission
> Calculator" (free Excel, as well) on TigersUnited.com
>
>
http://www.tigersunited.com/tech_tips/HokansonGearSpeedXL/pt-HokansonGearSpeedXL.asp
>
> Your current transmission can have the 3 gear sets installed (fourth and
> reverse do not change) and you will do MAGIC with your performance. New
> and used parts available at stick shift transmission shops.
>
> Now that the ratio is out of the way, the LSD DANA is an easy solution,
> as well. Look around for a Jaguar independent mechanic and get the DANA
> unit from a MK II. It is made in England by the same people that make
> your rear end - Salisbury - which is a wholly owned subsidiary of DANA.
> They make the identical unit you need, right down to the axle spline
> count, and it bolts right in (plus alignment) and uses U-joint pinions
> (as opposed to some other design). There is ONE issue with a DANA
> replacement. The ring gear on the British made units, both Tiger and
> Jaguar, have larger hardened attach bolts. This is fine if you have the
> British unit, and the 2.88. Everything fits.
>
> If you buy an American version, the carrier holes for those bolts are
> smaller. It forces you to an American ring gear (unless you drill out
> the carrier holes on a precision machine) and they come in larger
> numeric values. These cause higher rpm at cruising speed.
>
> If you get the English version, there are step-down bolts that allow a
> US ring gear to be bolted in, however.
>
> Use the calculator, read some of the articles on the subject on the web
> site, and talk to those that have done this. I think you will find very
> unhappy drivers with 3.22 ring gears because they have the wrong
> transmission gears.
>
>
> Steve
>
> Jim Ellis wrote:
>
> > I want a posi unit on the cheap, have seen lots of Dana 44 posi units
and
> >gear sets on ebay for all sorts of different cars and trucks. Will any of
> >them fit? is there a article on line some where on the Tiger rear end and
> >installing a different carrier and gear and what is involved? The 2.88 is
> >just not going to do... Thanks Jim E
> >
> >
> >
>
> --
>
> Steve Laifman
> Editor
> http://www.TigersUnited.com
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