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| which way does the fan go ..? https://www.ausmini.com/forums/viewtopic.php?f=2&t=51169 |
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| Author: | micky [ Fri Mar 13, 2009 9:27 am ] |
| Post subject: | which way does the fan go ..? |
looking the see which way the fan goes my car overheats and wondering how can i check if its correct its currently on the vechile. |
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| Author: | Harley [ Fri Mar 13, 2009 9:31 am ] |
| Post subject: | |
Fan usually turns the same direction the crankshaft does, you know with them being connected and all. Don't check with a finger, just trust me on this. Do you have a metal or plastic fan? The other things is just cause the car is overheating doesn't mean to blame the fan, it could be any number of things like the radiator or thermostat, etc. |
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| Author: | Wombat [ Fri Mar 13, 2009 9:40 am ] |
| Post subject: | |
From Keith Calvers site: "This is a subject that crops up often, but can easily be solved with a few words. The general description is one of poor cooling on a re-built engine. Both in traffic, and when on the move. All the usual suspects are checked out - ignition, fuelling, hoses, thermostats, water pumps, cracks in heads, etc. All to no avail, all seeming perfectly OK. And this isn't restricted to the Americas and Canada. I've seen this many times over here too. It’s just that having seen the problem very recently in quantity, it stuck in my mind to mention it in this here page. The fan blade. I dearly love a pound for every one I've seen on the wrong way round. Oh sure - it'll still blow a bit. But that's just the crunch - it will be a 'bit'. Fitted the wrong way round makes the blades grossly inefficient. Not so much of a problem on the older, multi-bladed metal fans - but certainly on later 11 blade plastic and 'export' 6-blade metal fans as they are aerofoil-shaped for maximum 'blow'. This causes desperately poor airflow at idle/low speed (as in traffic), and highly restrictive at higher speeds. Plastic 11-blade types should be fitted with the smooth moulded centre section facing the engine. The other 'webbed' side obviously faces the radiator. If still in doubt, there are metal inserts moulded into the plastic to take the retaining bolts. They are 'top-hat' in shape - the 'brim'/washer side goes under the head of these retaining bolts, so needs to face the radiator. And if that still isn't enough - most of them have an 'F' or 'Front' moulded into them meaning that side should face the front of the engine (radiator end in the Minis case). The metal 6-bladed 'export' fan should be fitted with the centre section facing the engine. The blades are riveted on separately; the blades therefore should be on the radiator side. And I believe many are stamped with 'this side facing front' or some such wording. Get it right - it makes a big difference." |
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