[Tigers] Cooling Fan

Wed Jul 19 08:31:56 MDT 2023

Thanks for all of the replies.  I have a mostly stock engine (with
Edelbrock intake and 4 bbl.) and stock radiator.  I have a temperature
gauge mounted on the intake and the engine seems to run a little over 200
at idle but I haven't had any problems while driving the car.  My problem
right now is that I took the car out one afternoon when the temperature was
over 100 degrees and when I pulled into the garage and shut the engine off
it puked some water onto the floor.  The temp gauge was showing around 250
degrees at that point.

I already have the lower shroud on my radiator and I am making some horn
opening covers today.  I will also look at blocking off the area below the
radiator.  I have read all of the articles that people have referred to and
I believe I have an airflow problem at low speeds.  So I was just looking
for pusher fan recommendations at this point.

The best advice is to probably not drive in 100+ degree weather.

Thanks,
Joe Brown

On Wed, Jul 19, 2023 at 8:33 AM LARRY PAULICK via Tigers <
tigers at autox.team.net> wrote:

> I made a custom lower fan shroud, as one does not exist for the stock
> tiger, fan shroud. I did smoke test with the car at idle and the air comes
> through the radiator down towards the ground and circles back through the
> radiator again. So essentially you're just recycling hot air from your own
> radiator.  It works.
>
> On Jul 19, 2023, at 2:03 AM, Owain Lloyd <owain.lloyd at gmail.com> wrote:
>
> I think michael hit the nail on the head.  first need to know is it
> overheating when stationary / moving slowly or at speed?
>
> a pusher fan will only help at very low speed or when stopped.  and spal
> is the go to brand.   still need the horn holes and gap between cross
> member and rad blocked.  cardboard and zip ties does the trick quickly and
> can be replaced with a more permanent solution later if you want.  also
> need a fan shroud.
>
> personally i've never needed the electric pusher fan because i have a
> small 13" flex fan on the water pump pulley.  that creates enough pull
> through the radiator at idle.
>
> if its overheating at more than 30/40mph then its another problem entirely
> and there are a variety of other things to check.
>
> in my case its fuel boiling in the carb under certain conditions (slowing
> down after running fast in really high ambient temps above a particular
> altitude) rather than coolant temp which is the problem.  there are a bunch
> of things i could do there, most importantly a carb heat shield, but
> i've only suffered from it once.
>
> one thing i've found very useful for debugging cooling issues in the tiger
> over the years is having a glass gano filter in the rad top hose.  at least
> you can see how the coolant is circulating which helps with thermostat or
> water pump issues and if you're used to how it should look, even how
> blocked the radiator is.
>
>
> On Wed, Jul 19, 2023 at 7:41 AM Jim B via Tigers <tigers at autox.team.net>
> wrote:
>
>> I’ve been reading about cooling issues with tigers for more that a decade
>> (much less than some reading this) blocking horn holes, pusher fans, and
>> shrouds etc etc. Entire studies have been done on this issue. Just check
>> STOA, CAT or any club site. All good reads! I think the first place to
>> start is knowing what the actual engine team really is. We all know that
>> the original temp guage can be off. The other thing is: as a dyed in the
>> wool ford guy, 185 degrees is the optimal engine temp. But, Ford engines
>> can get to 195-200 degrees easily and that is not necessarily a bad thing.
>> Yes, I put a pusher in mine only because I had one. I’m not really sure is
>> does anything. My original guage can show 225-230 on  a hot day (humidity
>> plays a bitg role) but never has pucked out fluid. The design of the should
>> is an issue. It lets hot air from the engine compartment to get under the
>> radiator. Many, many, ‘fixes’ that can be done. However, on a hot low
>> humidity day.. well good luck. JMO
>>
>> On Jul 18, 2023, at 8:40 PM, Allan Ballard <aballard at ix.netcom.com>
>> wrote:
>>
>> The article includes several suggestions.
>>
>> One of them is to seal the missing section of the stock fan shroud at the
>> bottom.
>>
>> A list member offered a piece he fabricated.
>>
>> I obtained one and here are a couple of pictures. I hope to fit it later
>> this year.
>>
>> Even a few degrees of cooling will be worth the effort.
>>
>> Allan Ballard
>> Mk1a Tiger
>>
>> <image0.jpeg><image1.jpeg>
>>
>> Sent from my iPhone
>>
>> On Jul 18, 2023, at 10:57 PM, Jay Laifman <jay.laifman at gmail.com> wrote:
>>
>> 
>> Have you looked at this cooling suggestions?
>> http://tigersunited.com/techtips/SteveLaifmanValance/pt-SteveLaifmanValance1.asp
>>
>> It works great in Southern California heat.
>>
>> On Tue, Jul 18, 2023 at 3:42 PM Joe Brown <jbbrown1980 at gmail.com> wrote:
>>
>>> My Tiger can't keep up with this 100 degree weather in Texas.  I've read
>>> through the article by Tiger Tom and Chuck King and I will make some of the
>>> suggested modifications.  They listed two different pusher electric fans in
>>> the article but both of them are no longer available.
>>>
>>> So, has anybody recently installed a pusher fan?  If so, what part
>>> numbers?
>>>
>>> Thanks,
>>> Joe Brown
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