[Fot] To thermostat or not to thermostat...

[Dave Riddle]

Ok.  Think I’ll redo the shroud and block the bypass.  The pump, pulley and electric fan are what have been there forever from when Bob Schaller owned the Car. I have suspected the shroud is not working right

From: tr4racing at googlemail.com [mailto:tr4racing at googlemail.com]
Sent: Friday, June 10, 2022 12:25 PM
To: Dave Riddle; tr4racing at googlemail.com; 'Philip Gott'
Cc: fot at autox.team.net
Subject: AW: [Fot] To thermostat or not to thermostat...

Somehow your radiator system is inefficient.
My TR4 temperature is nailed to 185F and don’t move away from…range maybe from 180 to 190.
I use:

 *   Good aluminum radiator
 *   Blocked small circuit
 *   Automatic bleeding system
 *   7 blade pump
 *   Smaller drive pulley to lower water pump speed

Von: Dave Riddle <Dave at microworks.net>
Gesendet: Freitag, 10. Juni 2022 21:18
An: tr4racing at googlemail.com; 'Philip Gott' <vfracing at aol.com>
Cc: fot at autox.team.net
Betreff: RE: [Fot] To thermostat or not to thermostat...

Brand new Aluminum Radiator from Wizard and all new hoses

From: tr4racing at googlemail.com<mailto:tr4racing at googlemail.com> [mailto:tr4racing at googlemail.com]
Sent: Friday, June 10, 2022 12:17 PM
To: 'Philip Gott'; Dave Riddle
Cc: fot at autox.team.net<mailto:fot at autox.team.net>
Subject: AW: [Fot] To thermostat or not to thermostat...

Yeah, that was my thought.

Besides that, I use a thermostat in my TR4.

Cheers
Chris


Von: Fot <fot-bounces at autox.team.net<mailto:fot-bounces at autox.team.net>> Im Auftrag von Philip Gott via Fot
Gesendet: Freitag, 10. Juni 2022 21:07
An: Dave Riddle <Dave at microworks.net<mailto:Dave at microworks.net>>
Cc: fot at autox.team.net<mailto:fot at autox.team.net>
Betreff: Re: [Fot] To thermostat or not to thermostat...

Time to get the radiator flushed.
Sent from my iPhone

On Jun 10, 2022, at 2:25 PM, Dave Riddle via Fot <fot at autox.team.net<mailto:fot at autox.team.net>> wrote:

I have the thermostat housing open right now and have obtained a new 180 degree thermostat to replace the 180 degree Motorad one that has been in there since the 1990s.  The old one I put in a pot and saw it open when I heated the water but It is still suspect.  Here in the Phoenix area it is the rare day that we really need to be concerned with ambient temps leading to prolonged engine warm up conditions. Lately I had noticed that when running for prolonged times at Freeway speeds (+75 at 3500 RPM) the temps would quickly reach +230 and if I jumped off the Freeway and moved at surface Street speeds of 45 even with Stop and Go streetlights within a mile or two the temps had dropped back to between 210 and 220.

Should I look at using a 160 degree thermostat or just ditching one altogether?

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Dave Riddle
Business IT Consulting
Office: 480-610-8234
eMail: dave at microworks.net<mailto:dave at microworks.net>
Website: http://www.microworks.net<http://www.microworks.net/>
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