[Healeys] 100S modifications (was Distributor cap orientation-details)

[Chris Dimmock]

Hey Gary,
Your basic premise is not correct.
Production 100 blocks are different casting blocks.
That's what Mike said in the article I referenced, and that's what  
Patrick said.
If the blocks were the same casting, then the material would be there  
to redrill a 100 block to accept the 100/S studs. Wouldn't it? Same  
casting???
Did you read Mike's article? He had to add material.
It wasn't in the casting of a std 100/4 block.
Yes, you can add material. You can remachine. You can "make" a 100  
block into a 100/S.
30 hours of a skilled machinist.
Dennis welch even quotes it as a "call us" price.
But that's not how the factory made 100/S blocks.
They started with a different casting.
A great machinist can make a 2.6 litre 100/6 block into a 3 litre.
A great machinist can make a 948cc Bugeye into 1220cc
A great machinist can make a 2 inch SU into a 2 1/8" carb at the  
butterfly
A great machinist can make a 2.2 litre Austin A70 head fit a 100/4
A great machinist can make a 100/4 block take a 100/S head.
But that's not what the factory did.
That made a new casting.
And machined it accordingly.
Sent from my iPhone

On 18/10/2011, at 12:34 PM, warthodson at aol.com wrote:

> 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
>
>
>
>
> -----Original Message-----
> From: Chris Dimmock <austin.healey at gmail.com>
> To: warthodson <warthodson at aol.com>
> Cc: healey.nut <healey.nut at gmail.com>; s.hutchings <s.hutchings at rogers.com 
> >; healeys <healeys at autox.team.net>
> Sent: Mon, Oct 17, 2011 10:19 am
> Subject: Re: [Healeys] 100S modifications (was Distributor cap  
> orientation-details)
>
> A 100/S block is a completely different animal to a 100 block, as Mike
> Salter has explained here: http://www.acmefluid.com.au/larry/100r/100rengine.html
>
>
> Sent from my iPhone
>
> On 18/10/2011, at 12:30 AM, warthodson at aol.com wrote:
>
> > Speaking of distributors on the other side of the motor, I
> > understand that the
> > 100S used a standard 100 block but a different head with the intake
> > & exhaust
> > on the opposite (RH)side. But I have never read/heard how they moved
> > the
> > distributor to the opposite (LH) side of the block. Can someone
> > provide a
> > detailed description the 100S machining modifications that were
> > required for
> > the conversion? Also, out of curiosity, did anyone ever offer an
> > aftermarket
> > cross flow head for the 100?
> > Gary Hodson
> >
> >
> > -----Original Message-----
> > From: Alan Seigrist <healey.nut at gmail.com>
> > To: Stephen Hutchings <s.hutchings at rogers.com>
> > Cc: healeys <healeys at autox.team.net>
> > Sent: Sun, Oct 16, 2011 11:18 pm
> > Subject: Re: [Healeys] Distributor cap orientation-details
> >
> >
> > I have seen them before, I think those caps would be for  
> distributors
> > ounted on the other side of the motor, although not sure of the
> > pplication.
> > _______________________________________________
> > Healeys at autox.team.net
> > Donate: http://www.team.net/donate.html
> > Suggested annual donation  $12.75
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> > Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/austin.healey@gmail.com