[Healeys] 100 water pumps

gradea1 at charter.net gradea1 at charter.net
Sat Mar 6 13:26:56 MST 2021


A great machinist, and friend of mine, rebuilt my 100 water pump with
a common argicultrial equipment seal and I believe a Delrin plastic
bush. Its rock solid. Hank

	-----------------------------------------From: "Michael Salter" 
To: "S and T Miller"
Cc: "healeys at autox.team.net"
Sent: Saturday March 6 2021 12:11:31PM
Subject: Re: [Healeys] 100 water pumps

  Titled pic 

 On Sat, Mar 6, 2021 at 2:59 PM Michael Salter  wrote:
   There are 3 main parts to the original seal system. Photo attached.
 The hard thing to find is the seal diaphragm.
 The sealing medium itself is a carbon block which runs directly
against a face of the cast iron body casting. The carbon block is
located in a bronze "holder" on top of the diaphragm seal. The bronze
holder is driven by splines on the impellor which wear badly in use.
 I have successfully rebuilt a number of lower mileage originals but
parts are really hard to find these days.
 M

 On Sat, Mar 6, 2021 at 2:35 PM S and T Miller  wrote:
   Looking forward to hearing your results of using it, in the car.
What is the original seal material made of? It's not metallic, and
feels like plastic or really hard rubber. I was thinking using valve
lapping paste could recondition the mating surfaces that isn't too far
gone? 

 The Millers

 "Always drive them, but remember each drive in an antique car is a
test drive."

-------------------------
FROM: Michael Salter 
SENT: Saturday, March 6, 2021 11:10 AM
TO: S and T Miller 
CC: healeys at autox.team.net 
SUBJECT: Re: [Healeys] 100 water pumps     No I left the seal out but
left the holder to maintain the bearing spacing.  On one of the others
I deleted the holder and turned up a longer bearing spacer to
compensate for the additional space. 
 M  
 On Sat., Mar. 6, 2021, 10:16 a.m. S and T Miller,  wrote:
   That is awesome. Is that a pool pump seal? Mine is the first one I
ever pulled apart, but I assume the other inner seal is simply to
contain the bearing grease. Since you are using sealed bearings, did
you still use that seal? 

 The Millers

 "Always drive them, but remember each drive in an antique car is a
test drive."

-------------------------
FROM: Michael Salter 
SENT: Saturday, March 6, 2021 8:57 AM
TO: S and T Miller 
CC: healeys at autox.team.net 
SUBJECT: Re: [Healeys] 100 water pumps     After a couple of premature
failures of repro 100 water pumps I decided to look into rebuilding
them with a modern seal and sealed bearings. I have some concerns
about the small size of the annulus through which all the coolant must
pass in the original design so I have managed to install a
considerably smaller seal as in the pics attached.  After bench
testing one of the prototypes is now fitted to my car awaiting a test
drive as soon as the snow is gone.  
 On Fri., Mar. 5, 2021, 11:13 p.m. S and T Miller via Healeys,  wrote:
   What's the skinny on the repo 100 water pumps? Hear they leak and
need broken in dry. Uprated pump any good? Moss states the brass tap
can be screwed into the uprated pump, but from the pictures it
actually looks like the standard has threads and not the uprated. Can
anyone confirm? Rebuild original?Thoughts/ advice welcomed? TY, Shawn 
 The Millers

 "Always drive them, but remember each drive in an antique car is a
test drive."
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