healeys
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Re: [Healeys] 3/8 BSF studs

To: Michael Salter <michaelsalter@gmail.com>
Subject: Re: [Healeys] 3/8 BSF studs
From: Per Schoerner <per@schoerner.se>
Date: Fri, 26 Jun 2020 20:59:26 +0200
Cc: healeys@autox.team.net
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CAB3i7LKq+3KWYJ+dAuv0uRZQEtiBgm58HZpOSwt1Yc6EQuUo2g@mail.gmail.com>
Michael
Happened to me too, but the other way around. I accidentally bought studs for a 
100 when I restored a 3000. I couldnâ??t understand why the studs didnâ??t fit, 
until many swear words later I discovered my mistake.

Per

Skickat från min iPhone

> 26 juni 2020 kl. 16:55 skrev Michael Salter <michaelsalter@gmail.com>:
> 
> 
> The 100 that I'm restoring has been previously "restored" so I'm being pretty 
> careful with threads and running taps and chasers through any that look even 
> slightly suspicious. 
> The exhaust flange studs on a 100 (2K7708) are 3/8" BSF and 3 years back the 
> ones on this engine looked to be in such good shape that I decided that 
> running a chaser down them wasn't necessary. 
> Silly me!!
> With one of the last jobs being installing one of my specially made single 
> sweeping curve front pipes I confidently started running the BSF nuts up to 
> secure the flange. On the last one the nut started well but after a few turns 
> became tight .... as is my usual practice I decided to back it off and run a 
> chaser up the stud to clean up the thread.
> Ahhh Houston  .... the nut had seized tight on the thread and despite every 
> trick the stud eventually broke off at the top of the thread.
> Now this is on an engine that I have painstakingly restored however,  there 
> was no option but to remove all the manifolds to replace the stud ... 
> Only after all that did I discover that this 1 stud had been replaced with a 
> UNF and that was why the brass nut had locked onto it 

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