[Healeys] Fwd: The AEC960 Healey 3000 Cylinder Head spark plug seat and timing issue

[Olin Brimberry]

My previously held message below:

Begin forwarded message:

> From: Olin Brimberry <healey at hunterbane.com>
> Date: October 5, 2010 10:32:13 AM EDT
> To: Chris Dimmock [Healey] <austin.healey at gmail.com>
> Cc: Healeys <healeys at autox.team.net>, Shop at Just Brits <shop at justbrits.com 
> >, msalter at precisionsportscar.com, frogeye at porterscustom.com, bspidell at comcast.net 
> , racarbon at verizon.net
> Subject: Re: [Healeys] The AEC960 Healey 3000 Cylinder Head spark  
> plug seat and timing issue
>
> Chris as another data point for your great write up, the Mechanical  
> Service Spare Parts Manual indicates the part number for the BJ7 and  
> BJ8 cylinder heads to be AEC 2008 with no discrepancies for export/ 
> UK or any change by engine number.  AEC 960 is not a valid part  
> number for these two series.  Maybe that head is from an earlier  
> 3000 or it is a casting number?
>
> Olin
> On Oct 5, 2010, at 3:54 AM, Chris Dimmock [Healey] wrote:
>
>> Ok Guys - here is the follow up as promised re the spark plug seat  
>> issue on
>> the AEC960 cylinder head.
>>
>> I've discussed this on and off for nearly 12 years - we discovered  
>> this
>> issue when I rebuilt my BJ8 in 1998
>>
>> Yesterday, I pulled out 3 different westlake design cylinder heads  
>> - a
>> Sprite; a 100/4; and a 3000 - and using the SAME spark plug - took  
>> a few
>> pics....
>>
>> Simply - the spark plugs on "some" 12 port 3000 cylinder heads  
>> don't go in
>> deep enough compared to any other westlake head design.
>>
>> Which is just wrong....
>>
>> Here is my take, with pictures....
>> http://www.myaustinhealey.com/aec960-healey-cylinder-head.html
>>
>> Fire away.....
>>
>> Chris
>> www.myaustinhealey.com
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