The BN1 issue is that the huge torque of a 100/4 is delivered through a non
straight cut gear. Delivered through 2nd in the box.
Look at the gear width, and tooth root area on cluster first to cluster 2nd.
That's the issue.
You can happily use a BN1 box forever. You just need to take off like Mark
Webber. Gently.
You can take off like Mark Webber anywhere. Probably not on a racetrack on the
front row of the grid.....
Nothing wrong with a BN1 box. As long as you leave the line like Mark.
;-)
Proud Australian.
Chris.
Sent from my iPhone
On 22/03/2013, at 9:06 PM, Derek Job <derek.c.job@gmail.com> wrote:
> Or better still, stick with the original as it is a nice 5 speed box
> without the extra low first gear. I don't really see much improvement if
> any going to the four speed.
>
> Derek
>
>
> On Fri, Mar 22, 2013 at 9:27 AM, Oudesluys <coudesluijs@chello.nl> wrote:
>
>> If you intend to modify why not use a more modern 5-speed conversion
>> (Toyota, Ford) which are readily available.
>> Kees Oudesluijs
>> NL
>>
>>
>> Op 22-3-2013 0:21, warthodson@aol.com schreef:
>>
>>> I am considering replacing the 3 speed transmission with OD in my BN1
>>> with an
>>> Austin-Healey 4 speed side shift transmission w/OD. I would also like to
>>> convert from a mechanical to hydraulic clutch. I am not familiar with
>>> what I
>>> would need in the way of bell housings, flywheels, etc. to make such a
>>> conversion and am interested in information on what I will need to
>>> consider
>>> when making this change.
>>> I am not interested any other non-Healey transmissions & yes I know this
>>> conversion will upset some people.
>>> Gary Hodson
>>> __________________________
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