[Tigers] Tigers Digest, Vol 15, Issue 132

Warren Goodman wjtwgoodman at aol.com
Tue Mar 29 11:47:18 MDT 2022 

The replacement Sunbeam Specialties sells is heavier and likely better on the side covers. The stock cores are thin tubes that are easily damaged when rodding them out. While apart drop in another core, my .20 cents :)

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Today's Topics:

  1. Heater control valve (Joel Martin)
  2. Re: Heater control valve (Theo Smit)
  3. Re: Heater control valve (michael king)
  4. Re: Heater control valve (LARRY PAULICK)


----------------------------------------------------------------------

Message: 1
Date: Tue, 29 Mar 2022 00:17:10 +0000 (UTC)
From: Joel Martin <jmartiniii at yahoo.com>
To: Tiger List Serve <tigers at autox.team.net>
Subject: [Tigers] Heater control valve
Message-ID: <1334692759.706099.1648513030147 at mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"

Hello All
With a aluminum radiator, what should the pounds of the cap should be on the overflow tank?? I have had a 13 pound cap on the overflow tank and have gone through 3? heater control values in 5700 miles and they all leak.
So now I am thinking about a 90 degrees manual valve with a very short handle that would fit in the stock location as the heater control valve utilizing the bracket of the heater control valve that? would allow me to bleed all air from the motor at the highest point, which I believe is the heater core,. The idea is try and and retain as close to possible the stock correct look, be able to bleed any air when refilling the radiator and have the ability to manually turn on the heater once to twice a year as I live in a very moderate environment and drive the car year round.
Any ideas as to a part number or manufacture that would meet these requirements or any other ideas?
Thanks
Joel Martin
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Message: 2
Date: Mon, 28 Mar 2022 18:57:26 -0600 (MDT)
From: Theo Smit <tsmit at shaw.ca>
To: Joel Martin <jmartiniii at yahoo.com>
Cc: tigers <tigers at autox.team.net>
Subject: Re: [Tigers] Heater control valve
Message-ID: <486403726.5545412.1648515446186.JavaMail.zimbra at shaw.ca>
Content-Type: text/plain; charset="utf-8"

The main worry, as regards cooling system pressure, is the end tanks on the heater core. Your radiator will be more than happy at anything the rest of the system can handle. 

Griffin recommends a 16 to 18 pound cap maximum. 

Cheers, 
Theo 




From: "tigers" <tigers at autox.team.net> 
To: "tigers" <tigers at autox.team.net> 
Sent: Monday, March 28, 2022 6:17:10 PM 
Subject: [Tigers] Heater control valve 

Hello All 

With a aluminum radiator, what should the pounds of the cap should be on the overflow tank? I have had a 13 pound cap on the overflow tank and have gone through 3 heater control values in 5700 miles and they all leak. 

So now I am thinking about a 90 degrees manual valve with a very short handle that would fit in the stock location as the heater control valve utilizing the bracket of the heater control valve that would allow me to bleed all air from the motor at the highest point, which I believe is the heater core,. The idea is try and and retain as close to possible the stock correct look, be able to bleed any air when refilling the radiator and have the ability to manually turn on the heater once to twice a year as I live in a very moderate environment and drive the car year round. 

Any ideas as to a part number or manufacture that would meet these requirements or any other ideas? 

Thanks 

Joel Martin 

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Message: 3
Date: Tue, 29 Mar 2022 09:32:30 +0800
From: michael king <michael.s.king at gmail.com>
To: Theo Smit <tsmit at shaw.ca>
Cc: Joel Martin <jmartiniii at yahoo.com>, tigers <tigers at autox.team.net>
Subject: Re: [Tigers] Heater control valve
Message-ID:
    <CAET8snXgWg+iME7zB2sU+P5QCMGbqFwNxvDXJUVX1tf3HNLCqg at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

The Tiger heater core is a known weak point, the sides of the core balloon
and stick it in the recess.. and they will also crack and leak. The later
style smiths heater valve as used on MKIA and MKII also seems a weaker
design than the earlier style MKI valve.

The repro MKIA/II style valves (MGC) had several faulty batches and they
tended to fail.

A big consideration is the original heater cores came from the alpine..
they were designed for a 7-9lbs pressure, same with the valve... the tiger
system upped the psi and stresses the valves and core.

I would recommend getting a new heater core out of the UK as they are rated
to higher psi.. also add cable ties around the circumference of them to
help brace the ends to the core.

just my .02

On Tue, 29 Mar 2022 at 08:58, Theo Smit via Tigers <tigers at autox.team.net>
wrote:

> The main worry, as regards cooling system pressure, is the end tanks on
> the heater core. Your radiator will be more than happy at anything the rest
> of the system can handle.
>
> Griffin recommends a 16 to 18 pound cap maximum.
>
> Cheers,
> Theo
>
>
>
> ------------------------------
> *From: *"tigers" <tigers at autox.team.net>
> *To: *"tigers" <tigers at autox.team.net>
> *Sent: *Monday, March 28, 2022 6:17:10 PM
> *Subject: *[Tigers] Heater control valve
>
> Hello All
>
> With a aluminum radiator, what should the pounds of the cap should be on
> the overflow tank?  I have had a 13 pound cap on the overflow tank and have
> gone through 3  heater control values in 5700 miles and they all leak.
>
> So now I am thinking about a 90 degrees manual valve with a very short
> handle that would fit in the stock location as the heater control valve
> utilizing the bracket of the heater control valve that  would allow me to
> bleed all air from the motor at the highest point, which I believe is the
> heater core,. The idea is try and and retain as close to possible the stock
> correct look, be able to bleed any air when refilling the radiator and have
> the ability to manually turn on the heater once to twice a year as I live
> in a very moderate environment and drive the car year round.
>
> Any ideas as to a part number or manufacture that would meet these
> requirements or any other ideas?
>
> Thanks
>
> Joel Martin
>
> _______________________________________________
>
> tigers at autox.team.net
>
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> Archive: http://www.team.net/pipermail/tigers
> http://autox.team.net/archive
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>
> tigers at autox.team.net
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>

-- 
Regards

Michael King
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Message: 4
Date: Tue, 29 Mar 2022 09:53:40 -0400
From: LARRY PAULICK <lpaulick1 at verizon.net>
To: Theo Smit <tsmit at shaw.ca>
Cc: "jmartiniii at yahoo.com" <jmartiniii at yahoo.com>,
    "tigers at autox.team.net" <tigers at autox.team.net>
Subject: Re: [Tigers] Heater control valve
Message-ID: <4A513F3A-BB86-4730-819B-1DEF3B2AD66A at verizon.net>
Content-Type: text/plain; charset="utf-8"

I believe it was Tom Hall, who enclosed the valve mechanism in the heater core area. I did this using a Honda valve with a couple of tricks for all the connections.  It has worked great since 1990 with no leaks.
Since it's a Honda valve
, it actually works as opposed to slow leaks in the Sunbeam valve, which never really shuts off.

Of course it's not stock, but I always thought the heater valve looked like," oh we forgot something?, and was just plain ugly to me.

I have photos and an article.


> On Mar 28, 2022, at 8:57 PM, Theo Smit via Tigers <tigers at autox.team.net> wrote:
> 
> The main worry, as regards cooling system pressure, is the end tanks on the heater core. Your radiator will be more than happy at anything the rest of the system can handle.
> 
> Griffin recommends a 16 to 18 pound cap maximum.
> 
> Cheers,
> Theo
> 
> 
> 
> From: "tigers" <tigers at autox.team.net <mailto:tigers at autox.team.net>>
> To: "tigers" <tigers at autox.team.net <mailto:tigers at autox.team.net>>
> Sent: Monday, March 28, 2022 6:17:10 PM
> Subject: [Tigers] Heater control valve
> 
> Hello All
> 
> With a aluminum radiator, what should the pounds of the cap should be on the overflow tank?  I have had a 13 pound cap on the overflow tank and have gone through 3  heater control values in 5700 miles and they all leak.
> 
> So now I am thinking about a 90 degrees manual valve with a very short handle that would fit in the stock location as the heater control valve utilizing the bracket of the heater control valve that  would allow me to bleed all air from the motor at the highest point, which I believe is the heater core,. The idea is try and and retain as close to possible the stock correct look, be able to bleed any air when refilling the radiator and have the ability to manually turn on the heater once to twice a year as I live in a very moderate environment and drive the car year round.
> 
> Any ideas as to a part number or manufacture that would meet these requirements or any other ideas?
> 
> Thanks
> 
> Joel Martin
> 
> _______________________________________________
> 
> tigers at autox.team.net
> 
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archive
> 
> Unsubscribe: http://autox.team.net/mailman/options/tigers/tsmit@shaw.ca <http://autox.team.net/mailman/options/tigers/tsmit@shaw.ca>
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> 
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> 
> Donate: http://www.team.net/donate.html <http://www.team.net/donate.html>
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End of Tigers Digest, Vol 15, Issue 132
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