Coolant flow direction

hi all, daft question....

which way does the coolant pump in a series? top to bottom of rad or vice versa?

I'm fitting a leccy fan to help with carb icing on cold days and need to work out which hose to tap into:

Temp switch hose adaptor off fleabay;
http://bit.ly/1cHyFd0

Muchos amigas and a very happy new year!

Always top to bottom

The Mad Hat Man said:

Always top to bottom

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sweet thanks, I can plumb/splice into bottom hose for my fan cut in switch then

anyone fitted one to bottom hose with much success?

X-Fan Thermostatic Fan Switch 34mm diameter in Blue

would like to hear your opinions

It's too far from the engine! It won't be a true reflection of engine temp, it'll only read cooled water returning!!!

Diesel Do said:

It's too far from the engine! It won't be a true reflection of engine temp, it'll only read cooled water returning!!!

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I thought about top hose fitment but then read fit to bottom as it will then cut fan in if the radiator can't cool it enough under its own steam so to speak.

joe27979 said:

I thought about top hose fitment but then read fit to bottom as it will then cut fan in if the radiator can't cool it enough under its own steam so to speak.

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If the water goes out the top of the engine thru the rad and gets cooled on the way and is still hot enough to turn on the fan it means the engine will be boiling!

Read my fan fitting with piccies fred.

The aim is to regulate the engine temp as well as possible, to do that you need an accurate temp reading ie as close to the engine outlet as possible. It's the way all manufacturers do it. I tend not to listen to pub mechanics cos they cause lots of problems, if you were to put it in the bottom hose you'd find that most of the time it'd be fine, you'd be happy it's working, BUT one day you put extra demand on the system, the engine would boil the fan wouldn't cut in cos the water going past the switch is cool (relatively) and you screw up your engine!

The Mad Hat Man said:

Read my fan fitting with piccies fred.

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No, don't want to

The Mad Hat Man said:

Read my fan fitting with piccies fred.

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Happy new year

This must have been "discussed" gazillions of times.... Do a :search:

http://www.landyzone.co.uk/lz/f7/200-tdi-conversion-pics-230884.html

Old arguement this but I'd go for top hose everytime to be safe. I'd rather be running a tad cool all day long than overheat once.

The Mad Hat Man said:

This must have been "discussed" gazillions of times.... Do a :search:

http://www.landyzone.co.uk/lz/f7/200-tdi-conversion-pics-230884.html

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How many 0s in a gazillion?????

Diesel Do said:

Happy new year

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I weren't talking to you , but to the OP.

Yu n I agree .

Seasons Felicitations, old chap. How's the work?

Diesel Do said:

How many 0s in a gazillion?????

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A lot more than yu want to read .

The Mad Hat Man said:

I weren't talking to you , but to the OP.

Yu n I agree .

Seasons Felicitations, old chap. How's the work?

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Who's Felicity? Works great, getting paid is another matter

Ere yar. As it's the new year....


Lots of piccies for the dumbos too.....

http://www.landyzone.co.uk/lz/f6/mhm-lecky-fan-fitting-piccies-46314.html

Diesel Do said:

Felicity? Works great, getting laid is another matter

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Well really!

The Mad Hat Man said:

Well really!

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Clearly not met the ex in Brighton hill!