[Healeys] 100 water pumps

[Michael Salter]

Yes probably very similar to the 19mm one that I  used Hank. Ceramic seal
running on what looks like Delrin.
It can only be used in 100 pumps that have a keyed impeller.
If you have a pressed on impeller 22mm is required unless you want to risk
trying to get the impeller off and yes some trick machining is required.

M

On Sat., Mar. 6, 2021, 3:26 p.m. , <gradea1 at charter.net> wrote:

> 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 <michaelsalter at gmail.com>
> 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 <stmiller96 at hotmail.com>
>> 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 <michaelsalter at gmail.com>
>>> *Sent:* Saturday, March 6, 2021 11:10 AM
>>> *To:* S and T Miller <stmiller96 at hotmail.com>
>>> *Cc:* healeys at autox.team.net <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, <
>>> stmiller96 at hotmail.com> 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 <michaelsalter at gmail.com>
>>> *Sent:* Saturday, March 6, 2021 8:57 AM
>>> *To:* S and T Miller <stmiller96 at hotmail.com>
>>> *Cc:* healeys at autox.team.net <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, <
>>> healeys at autox.team.net> 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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