[Fot] TR8 Water temperature

[Duncan Charlton]

Wouldn’t using a triple core radiator result in a greater temperature differential between input and output?  Seems like your radiator temperature differential is more than adequate.  The more I think about it, the more I believe that flow through the system is too slow, either due to a restriction or the pump design.

Duncan Charlton
Elgin, Texas USA



> On Jul 9, 2016, at 2:28 PM, Christian Marx <tr4racing at googlemail.com> wrote:
> 
> It is a single pass single core radiator with 2” tube 
>  
> Gesendet von meinem Windows 10 Phone
>  
> Von: Greg Blake <mailto:gblake58tr3 at icloud.com>
> Gesendet: Samstag, 9. Juli 2016 21:08
> An: MadMarx <mailto:tr4racing at googlemail.com>
> Cc: FOT List <mailto:fot at autox.team.net>
> Betreff: Re: AW: [Fot] TR8 Water temperature
>  
> Maybe you need a multi pass radiator. Do you know what is in the car now; single, double; triple pass?
> 
> Sent from my iPhone
> 
> On Jul 9, 2016, at 10:07 AM, MadMarx <tr4racing at googlemail.com <mailto:tr4racing at googlemail.com>> wrote:
> 
> The cap is a 23 psi cap.
> I have an expansion tank which is plumbed at the sucktion side of the lower pump hose and has a 2nd connection at the top of the radiator to remove air from the system.
> I don’t understand the air flow question. The car has an inlet on front, and an airbox around the radiator to force the air through.
>  
>   <>
> Von: Greg Blake [mailto:gblake58tr3 at icloud.com <mailto:gblake58tr3 at icloud.com>] 
> Gesendet: Samstag, 9. Juli 2016 15:49
> An: MadMarx <tr4racing at googlemail.com <mailto:tr4racing at googlemail.com>>
> Betreff: Re: [Fot] TR8 Water temperature
>  
> questions. 
> What pressure are you running?
> Do you have a pressurized expansion tank plumed into the system that takes water from the back of one of the heads then recirculates to the pump?
> What kind of air flow are you getting through the radiator?
> 
> Sent from my iPhone
> 
> On Jul 7, 2016, at 12:20 PM, MadMarx <tr4racing at googlemail.com <mailto:tr4racing at googlemail.com>> wrote:
> 
> Hi guys,
>  
> My TR8 is running way too hot about 212F at full speed and at idle the temps are getting that high also. I have no idea to get them down.
> Radiator core is 68x48cm x 5 cm. I suppose that should be enough. I've experiment with different restrictor plates with no change. Changing pump speed didn't help either. The difference between radiator in and outlet is 10°C (50F). Not enough I would say. Maybe making the pump more slower? It was running on a ratio of 0.8 slower than crank, currently 1:1 speed. Any ideas? 10 Liters are circulating.
>  
> Cheers
> Chris
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