-- [ From: Bob Nogueira * EMC.Ver #3.1a ] --
Greg
When I rebuilt my Plus4 engine last year Ken at British Frame and
Engine advised me that he was also having a difficult time finding
properly hardened lifters. He said he was using a Ford (V8 Will !! )
lifter with a sleeve. Have you had any experience with this fix ?
Bob Nogueira ( Who now has a vision of his lifters looking like melted
Chocolate )
-------- REPLY, Original message follows --------
> Date: Sunday, 07-Feb-99 02:26 PM
>
> From: SOLOW GREG \ Internet: (gregmogdoc@surfnetusa.com)
> To: Robert K. Alexander \ Internet: (ralex@unm.edu)
> cc: MORGANS \ Internet: (morgans@autox.team.net)
>
> Subject: Re: brake (break?) fluid
>
> Because we co a lot of restoration work, I thought it would be a good idea
to
> try silicone fluid. We started using it for the first time about 15
years
> ago. What we have found is that glycol based fluid does NOT cause
Girling or
> Lockeed seals to expand, silicone based fluid DO CAUSE SEAL EXPANSION.
This
> has been confirmed by a press release that I have from Girling that they
put
> out about ten years ago. In most cases, in street driven cars this is not
a
> problem because in most hydraulic cylinders the seal fits into a groove in
the
> piston, The groove is very deep, and the piston and the seal slide back
and
> forth in the bore of the cylinder in which they are a close fit. The 10%
> expansion of the seal, (this is the figure used by Girling), only makes
for a
> tighter seal. But in some older Girling master cylinders, the seal fits
into
> a groove in the body of the cylinder and the piston, which is smooth,
slides
> back and forth through the seal. In our experience, in these cylinders,
the
> expansion of the seal causes the seal to lose contact with the piston and
the
> cylinder stops working. In fact you completely lose ALL pressure and the
pedal
> goes right to the floor! The type of cylinder where this has occurred is
used
> in all Morgans up to about 1955. All the sealing setup in most disc
brake
> calipers is the same as this, we have decided to restrict the use of
silicone
> fluids to clutch hydraulics and drum brake systems that use the later
design
> master cylinder and where the cars are driven infrequently and are really
> "garage queens." The other cars we use these fluids on are cars like MG T
> series and Morris Minors where the master cylinder is mounted under the
floor
> boards and are therefore exposed to a lot of moisture as well as having
the
> later design of cylinder.
> WE DO NOT RECOMMEND THE USE OF SILICONE FLUID FOR ANY DISC BRAKE CAR
THAT
> IS EVER DRIVEN HARD. As the temp of the fluid rises, the fluid becomes
more
> and more compressible, and it becomes more susceptible to contributing to
a
> sudden, total, and unpredictable lack of any pedal pressure and consequent
> brake failure. It is just not worth the risk.
>
> Regards, Greg Solow
> -----Original Message-----
> From: Robert Alexander <ralex@unm.edu>
> To: Greg Solow <gregmogdoc@surfnetusa.com>
> Cc: morgans@autox.team.net <morgans@autox.team.net>
> Date: Sunday, February 07, 1999 7:27 AM
> Subject: Re: brake (break?) fluid
>
>
> >Thanks, Greg. I needed to flush the system anyway, so I'll return to
> >good old Castrol for this. Have you tried the new silicon fluids?
> >They're supposed to be more friendly to rubber, more of a pain to bleed,
> >and not so great on the race course but better for street use.
> >
> >Bob Alexander
> >67+4
> >
> >PS: good picture of you and #45 in the last Format. RA
> >
> >On Sat, 6 Feb 1999, Greg Solow wrote:
> >
> >> Date: Sat, 6 Feb 1999 19:21:59 -0800
> >> From: Greg Solow <gregmogdoc@surfnetusa.com>
> >> To: Robert Alexander <ralex@unm.edu>, morgans@autox.team.net
> >> Subject: Re: brake (break?) fluid
> >>
> >> All Dot brake fluids of the same number are completely compatible with
> one
> >> another and for sure will not hurt your braking system. At the
Engine
> >> Room we use Castrol LMA Dot 4 fluid because of its fairly high boiling
> point
> >> and its' "low moisture activity" which I assume means it has less of a
> >> tendency to absorb water. We recommend flushing systems with fresh
fluid
> >> every year.
> >>
> Regards,
> >> Greg Solow
> >> -----Original Message-----
> >> From: Robert Alexander <ralex@unm.edu>
> >> To: morgans@autox.team.net <morgans@autox.team.net>
> >> Date: Saturday, February 06, 1999 4:40 PM
> >> Subject: brake (break?) fluid
> >>
> >>
> >> >Hi,
> >> > Had a minor road emergency a couple of days ago and had to fill my
> >> >brake fluid reservoir with NAPA Dot 4 (recommended by a local LBC type
).
> >> >Thought I'd better check it out with the cognoscenti. Is this stuff
> >> >eating all rubber parts in my brake system, or am I just changing
brand
> >> >names? Would appreciate your input. I know there was a thead on this
> >> >some time ago, but don't have time right now to research it. Thanks
for
> >> >any help
> >> >
> >> >Bob Alexander
> >> >67 +4
> >>
> >>
> >
>
-------- REPLY, End of original message --------
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