[Tigers] Cooling Fan

Wed Jul 19 07:57:45 MDT 2023

If it is not puking, it is not overheating.  A good adage.

You need to examine the basics of the cooling system first.

You need to know your cooling system is clean and free flowing before you begin evaluating any cooling problems.

The temp gauge should always be checked by other means – infrared thermometer or other means

Flush the engine plus flush and back flush the heater core – you might be surprised how much crap accumulates in the heater core.

Years ago there were some very good flush products on the market, today not so much.

The last time I flushed a cooling system I used Thermocure by Evaporust – this product seems to work.

Many years ago my engine puked so I flushed the engine.   I cleared the heater core which took nearly an hour before the crap stopped come out of it.

I installed a coolant recovery bottle – coolant on the front left tire is not good in a right turn.

I have the Ford 6 bladed fan on my mostly stock 260 engine. 

No major overheating problem since.    After expressway runs into slower traffic I watch the temp gauge and pop the hood if the temp spikes past 200.

Read the cooling articles for additional advice and ideas about dealing with any cooling issues you still have.

Ron Fraser

From: Tigers <tigers-bounces at autox.team.net> On Behalf Of Owain Lloyd
Sent: Wednesday, July 19, 2023 2:03 AM
To: Jim B <jbsyv at yahoo.com>
Cc: tigers at autox.team.net
Subject: Re: [Tigers] Cooling Fan

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 <mailto: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 <mailto: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

Sent from my iPhone

On Jul 18, 2023, at 10:57 PM, Jay Laifman <jay.laifman at gmail.com <mailto: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 <mailto: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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