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cooling a moke
https://www.ausmini.com/forums/viewtopic.php?f=2&t=24649		 Page 1 of 1
Author:  simon k [ Wed Nov 08, 2006 9:41 pm ]
Post subject:  cooling a moke
we all know that Mokes are pretty cool, but sometimes they can also be pretty hot...

a friend of mine has a moke that gets very hot at speeds over 70kph, it's not engine speed related cos it's fine in traffic, and you can sit it on 4000rpm for as long as you like while stationary and it won't get hot, or drive around at 50kph in 2nd gear, it's just at speed... now that I think about it, I have 2 friends that have this problem, one in Sydney, and one here in Wodonga

At the Moke Muster this year I saw a couple of examples of the original cooling aid used on Mokes, which you don't see very often... you know how the front of the mudguard of a moke is a right-angle triangle, well, at speed air goes under the mudguard, and probably tries to go through the radiator from the outside if the air going through the grille isn't being directed through the radiator properly. Originally, they had a piece of plastic or something on the radiator side that made the front of the mudguard square, which created a low pressure area behind the headlight, thus helping to draw the air from the engine bay through the radiator... you don't see it very often, but I'm led to believe it was standard fitment.

do any of our lucky moke owners have a similar experience to my friends where the little buggers overheat at speed? any special tricks or tips for keeping them cool? I'm looking for those lifelong moke addicts to bring their special secrets out into the light for the world to marvel at
Author:  awdmoke [ Thu Nov 09, 2006 1:22 am ]
Post subject: 
It's not unheard of for the fan to be fitted backwards accidentally,
then it cools fine when stationary, but struggles at cruising speed
as the fan fights against the natural air flow

But, that said, I've had plenty of cars that do that, not just minis/mokes.
Usually just a slightly blocked radiator core (or dodgy water pump).
Idle is fine, but placed under load for more than say 3/4 hour
it builds up more heat than the radiator can shift.
Author:  drmini in aust [ Thu Nov 09, 2006 5:39 am ]
Post subject: 
awdmoke wrote:
It's not unheard of for the fan to be fitted backwards accidentally,
then it cools fine when stationary, but struggles at cruising speed
as the fan fights against the natural air flow

But, that said, I've had plenty of cars that do that, not just minis/mokes.
Usually just a slightly blocked radiator core (or dodgy water pump).
Idle is fine, but placed under load for more than say 3/4 hour
it builds up more heat than the radiator can shift.

Turning the fan round won't change its helix angle direction.
If you fit the fan backwards, it still blows INTO the guard, but less efficiently. :wink:
Author:  sports850 [ Thu Nov 09, 2006 7:21 am ]
Post subject: 
Never had an overheating moke at any speed , but check to see if someone's put a pig solid bit of sheet steel or plastic across the grille to keep water away from the distibuter or something similar to impede the air flow in . As the doc said , turning the fan around won't reverse the direction of the air flow but it will reduce the efficiency of it by about 20% . Also make sure the rubber doover is between the radiator shroud and the body so all the air goes the right way and isn't lost in turbulence .
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