Actually I don't think it is either.
The thread is 3/8" x 28 T.P.I. whereas BSF is 3/8" x 24 T.P.I. I was able to
buy a tap for it many years ago after discovering that 3/8" x 24 just would
not do the job!!
Why on earth they used such a fine thread in aluminum I have no idea but I
guess someone had a "better idea".
Michael Salter
On Sat, Oct 2, 2010 at 7:37 PM, Alan Seigrist <healey.nut@gmail.com> wrote:
> Not sure if that's a BSP or BSF thread, if so you can probably
> helicoil it, but that still requires disassembly.
>
> Alan
>
> On 10/3/10, Team.net <lawrence.swift@gmail.com> wrote:
> > The oil pressure in my 59 BT7 is below standard due, I just discovered,
> to
> > the stripped banjo bolt on the 4th (from the front) rocker arm pedestal.
> > The oil spurts out from the top of the pedestal quite vigorously. Short
> of
> > purchasing a new pedestal and bush and rebuilding the entire arm, are
> there
> > any other fixes?
> >
> > Thanks,
> >
> > Larry Swift
> >
> > -----Original Message-----
> > From: healeys-bounces@autox.team.net [mailto:
> healeys-bounces@autox.team.net]
> > On Behalf Of jim brown
> > Sent: Friday, October 01, 2010 9:16 AM
> > To: healeys@autox.team.net
> > Subject: [Healeys] pressure relief valve
> >
> > I seem to remember that there are 2 different oil pressure relief valves
> > available. They are different in their profile on the bullet end of the
> > piston
> > with one having a shoulder and not being a smooth taper. Fitting the
> wrong
> > one
> > will change the pressure at which oil is by passed. Is that correct?
> >
> > Jim Brown
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