Those are listed in the BMC Mechanical Service Parts List as being Hex head
5/16" NF x 5/8" long.
Rich Chrysler
----- Original Message -----
From: "Mark Schneider" <mandmschneider@comcast.net>
To: <healeys@autox.team.net>
Sent: Monday, July 27, 2009 11:47 PM
Subject: [Healeys] External Engine Hardware
> Listers,
>
> Can anyone tell me the bolt diameter, length, thread pitch/count for the
> two bolts associated with the "blanking plate" area on the forward right
> side of the engine. The Healey models in question are BN7, BT7, BJ7, and
> BJ8. This hardware may be seen on pages 10 & 11 of the Moss catalogue
> AHY-104 under page heading "External Engine 100-6, 3000". The bolt is
> item 39, two are required. Also listed are four (4) copper washers, item
> 40.
>
> On earlier Healey engines, i.e., BN4 & BN6, a blanking plate, gasket,
> studs, nuts, and washers served to seal an area of the block. On the
> later cars the bolts apparently sealed the threaded holes and the plate
> was no longer necessary. We are about to fire up a rebuilt engine and do
> not have the bolts or the technical information on the bolt size, length,
> or threads and are hoping one of the listers can provide the information.
>
> Thanks.
>
> Marks 3
> '66 BJ8
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