[Healeys] 100S modifications

[Michael Salter]

Yes quite correct   as you will probably recall there is only one set of
gear teeth on the cam, right in the middle.

Michael S

On Tue, Oct 18, 2011 at 10:53 PM, Alan Seigrist <healey.nut at gmail.com>wrote:

> Yes, Actually if I recall correctly the distributor on a standard 100 runs
> of this same gear, but because it's on the wrong side it reaches across the
> crank to connect, that's why the distributor drive shaft is so long on the
> 100.
>
> On Wed, Oct 19, 2011 at 8:59 AM, Michael Salter <
> msalter at precisionsportscar.com> wrote:
>
>> Hi Gary,
>> I'll try to answer your questions.
>> I'm not an expert on casting techniques but. as far as I can figure, to
>> make
>> the 100S block the pattern for the deck of the block was changed with
>> repositioned bosses for the studs and incidentally more material where the
>> generator would eventually mount.
>> Moving the distributor to the other side of the block was necessitated by
>> the manifolds which were located on the right side of the 100S head.
>> The actual process of moving the distributor was not too difficult because
>> there is already a 1/2 engine speed quill shaft over there which is used
>> to
>> drive the tachometer in the original 100 configuration. All they had to do
>> was cast up a special pedestal, incorporating a tachometer drive (just
>> like
>> the one used on the pre BJ8 6 cylinder cars)  and bolt it on.
>>
>> Michael Salter
>>
>> On Tue, Oct 18, 2011 at 4:31 PM, Tadeusz Malkiewicz <
>> tadeusz.malkiewicz at gmail.com> wrote:
>>
>> > DW makes the heads, but there could be others..
>> >
>> > http://www.bighealey.co.uk/content/100s-aluminium-cylinder-heads
>> >
>> > Kilmartin brothers do the chassis parts to a great level of detail..
>> >
>> > At this point, a good replica is probably a matter of $$$$$.. :-)
>> >
>> > BR, Tadek
>> >
>> > -----Original Message-----
>> > From: healeys-bounces at autox.team.net [mailto:
>> > healeys-bounces at autox.team.net]
>> > On Behalf Of warthodson at aol.com
>> > Sent: Tuesday, 18 October 2011 12:34 PM
>> > To: austin.healey at gmail.com
>> > Cc: healeys at autox.team.net
>> > Subject: Re: [Healeys] 100S modifications (was Distributor cap
>> > orientation-details)
>> >
>> > Mike's article is very interesting, but I am not sure it answers my
>> > original
>> > question. Let me restate it. It is my understanding that the 100S engine
>> > used a 100 engine block. Was the 100S engine based on using use a 100
>> > engine
>> > block casting (before it had been machined) and then machining it to
>> 100S
>> > specifications or was it based on using an already machine 100 engine
>> block
>> > & modifying it where necesssary? Also, how did they move the distributor
>> > from one side to the other side? I cannot picture how the distrbutor
>> would
>> > be mounted on the side of the block not originally intended for the
>> > distributor.
>> > Also, how was the distributor driven? Finally, based on Mike's article,
>> > what
>> > did the factory deal with  moving the head studs for the 100S engine?
>> > Gary Hodson
>> >
>> >
>> > ------------------------------
>> >
>> > _