As I recall the optional TR-6 gear ratio, as normally fitted to PI cars was
3.45:1. The standard ration for TR-6's and all TR-4's was 3.7:1. As you
may have noticed, the rear differential mount on the TR-4A is different
than on the TR-6. I much prefer the TR-4A mount - you will never tear it
loose, like you apparently did with your TR-6. Only possible drawback is
that with the TR-4A rear cover, the gear oil capacity is slightly less than
with the TR-6 rear cover. Good luck!
At 08:58 AM 5/3/99 +0000, you wrote:
>
>Well, whilst it wasn't quite re-arranged, I did darn a few items last night
>and get one or two vehicles back into good enough repair to take 'em out to
>play.
>
>
>For those who remember, I thought I ripped the diff mount out of the TR6
again.
>
>Luckily I was wrong.
>
>I shattered another pinion gear.
>
>The major chunk the was caught in the ring gear, carried around to the back
>of the diff,
>and driven *through* the rear Aluminium diff housing.
>
>Festive, eh?
>
>Luckily I had that spare diff in the garage...
>
>Turned out to be for a 4 IRS.
>
>Still fits, but I think the ratio is different.
>
>Any idea? The TR6 is 3.55:1.
>
>iii
>
>
>
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