[Healeys] External differences of six cylinder engines

Josef.Eckert at t-systems.com Josef.Eckert at t-systems.com
Sun Jun 6 01:19:31 MDT 2010

I need to correct you. There are 3 different 12 port head castings.
1 The early one without the "nose" for the late 100/6s
2 The one for the Thermo-Choke on early 3000s
3 The "nose" one following the Thermo-Choke one on 3000 Mk1 to Mk3.

Josef Eckert

-----Urspr|ngliche Nachricht-----
Von: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net] Im
Auftrag von Chris Dimmock
Gesendet: Sonntag, 6. Juni 2010 04:17
An: Derek Job
Cc: Forum
Betreff: Re: [Healeys] External differences of six cylinder engines

The cylinder heads are the giveaway. ;-) The log head is the early 100/6 The
pre BJ8 12 port head is different to the BJ8 12 port head casting
- different casting number, and a distinct difference around the thermostat
area - look at the sculpting of the head casting In 3 litre blocks there are 2
castings. Pre bj8 blocks have the dipstick low on the block. BJ8s have a high
mounted dipstick Obviously, the same general guidelines applies to sedans of
the same era. Eg a 1966 Wolseley has the same block/ head casting as a BJ8.
But many sedans had the starter motor on the opposite side to a Healey. Ie
different rear engine plate.

Sent from my iPhone

On 05/06/2010, at 10:44 PM, Derek Job <derek.c.job at gmail.com> wrote:

> Hi guys
> Are there any external differences between the six cylinder engines
> that would allow you to identify one as being either
> an IC  (100-Six, Integral head)
> or 26 D (100-Six, six port inlet)
> or 29D (3000)
> thanks
> Derek
> www.healeysix.net

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