[Spits] Top Timing cover Screw

[Bill Gingerich]

Is there any room to tap a thread in the block behind the plate?  I just
don't remember.  Another idea is you could drill out the plate, and weld a
threaded insert into the larger hole.  Perhaps enlarge the hole in the
alternator bracket to fit around the insert.  That would give you a longer
thread for the bolt to go into.  Not sure how much torque a .160 long thread
would hold.

Thinking back, it was one of the other front plate holes that I helicoiled.
Maybe the sealing block?

BillG

-----Original Message-----
From: spitfires-bounces at autox.team.net
[mailto:spitfires-bounces at autox.team.net] On Behalf Of Alex&Janet Thomson
Sent: Sunday, December 16, 2012 6:26 PM
To: 'Roger Elliott'; 'Spitfire list'
Subject: Re: [Spits] Top Timing cover Screw

A link below will take you to the McMaster Carr catalog where they list
various thread inserts. Naturally, most of those repair methods involve
special tools for insertion.Not sure if there is enough room for these or
not. Sounds like a heli-coil is out of the question based on the plate
thickness. Is there room to use a jam nut (skinny nut) on the back of the
plate?

http://www.mcmaster.com/#standard-rivet-nuts/=kmgbbf 

Alex Thomson