My A90 box has the same spring loaded plunger on it. Not sure what it is for...
I also have a slightly used gold seal A90 box for a spare...!
Cheers,
Alan
On 8/22/11, Peter & Veronica <greylinn at ozemail.com.au> wrote:
> G'day list
>
> My BN1 based Ward Special coupe with its 3.54 diff is great on the road but
> an absolute pig to get rolling on a hill start.
> To overcome this, Ib ve for some time thought about unblocking the A90 first
> gear in the BN1 gearbox. Several listers have provided advice about this,
> but this hasnb t been sufficiently detailed for me to have a go at it.
> Recently fellow lister Keith Bailey and I had the chance to dismantle one of
> his A70 gearboxes to see just how the b change speed gateb (item 56, fig. 4
> on p F/4 of the BN1 workshop manual) blocks the A70 (or A90) first gear in
> the BN1 application. It boils down to an extra B<b of steel on the thinner
> lug of the above item preventing the selector moving into that position.
> Keith kindly donated the A70 speed gate, and by judicious sideways movement
> of the gearbox, I was able to swap this with the one in the Ward Special
> without taking the gearbox out of the car. Now I have a perfectly useable
> b newb first gear, and the ability to take off on a slope without burning
> the
> clutch.
> In another of Keithb s A70 boxes, the speed gate plate has a spring-loaded
> plunger set into it which bears on horseshoe-shaped selector gate b whatb s
> that for I wonder?
> I have photos of the various speed gates if anyone is interested.
>
> Cheers
>
> Peter Linn
> Brisbane Oz
> BN1 Ward Spl coupe
> BN1 Holden V6
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