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 Post subject: radiator
PostPosted: Fri Jan 06, 2006 10:13 pm 
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998cc
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Joined: Wed Aug 31, 2005 9:16 pm
Posts: 714
Location: Gold Coast
its bloody hot in QLD and you know what that means, is there a better radiator i could get!!!

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PostPosted: Fri Jan 06, 2006 10:16 pm 
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Joined: Mon Jun 07, 2004 5:09 pm
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Location: Central Coast, NSW.
Better than what ?

I run a basic 3 core, works pretty good when not doing a freeway run.

Pretty sure 4 core sports ones are pretty good...but im not 100% on that.

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PostPosted: Fri Jan 06, 2006 10:22 pm 
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Joined: Tue Apr 06, 2004 2:49 pm
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Location: Central Coast, NSW
4 core is good (I've got one) but they are HUGE and only JUST fit in a "round-nose"
I'd reccommend the 2 core.. everyone seems to rave about them... if i hadnt boght a new 4 core, it would have been the 2 core...

J

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PostPosted: Fri Jan 06, 2006 10:22 pm 
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998cc
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Joined: Wed Aug 31, 2005 9:16 pm
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Location: Gold Coast
sorry just basic 3 core dont really know much bout radiators, how much we looking for 2 core

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PostPosted: Fri Jan 06, 2006 10:24 pm 
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Joined: Mon Jun 07, 2004 5:09 pm
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Location: Central Coast, NSW.
Or..do what kazjim has done with his setup.....

Radiator + Thermo Fan.

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PostPosted: Sat Jan 07, 2006 6:11 am 
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Joined: Fri Mar 19, 2004 6:19 pm
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Location: near Baulkham Hills, NSW
I've got a new 2 core in the 1293, it is not as good as the new 3 core (and freshair heater) in the 1360.

Considering the 2 core rad is 100 bux dearer (around $250 now) I reckon you are better just to add a heater core to what you have now- plumb it in between back of head and the bottom radiator hose takeoff. :wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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PostPosted: Mon Jan 09, 2006 9:41 am 
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848cc
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Joined: Fri May 06, 2005 6:19 pm
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Location: Au
Hi Guys,

I seem to to have the overheating on the highway thing happening too... around town its fine, but as when I try and push the speed over 90 on the highway heading from melbourne to geelong (and parts beyond), it overheats, and pretty much have to drive at 85 or so. I really need to look at this, as i also carry things on the roof rack which of course add to the problems. I tend to drive at least 4 or 5 hours on highways over the weekend, so I really need to get this sorted.

The plan at the moment is to replace the current cooling system (the mini is fairly new to me, so I'm not sure when this was last done). So, new rad, water pump, hoses, thermostat etc etc.

So, based on experience, whats the best combination of parts to use? New 4 core rad?
Will this be enough, or will it still over heat? Can I please get a little more information on the heater core idea that was mentioned before? A photo would be great.

Its a 78 Clubman, 998, pretty much stock.

cheers

David


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 Post subject:
PostPosted: Mon Jan 09, 2006 9:58 am 
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Joined: Tue Mar 16, 2004 5:17 pm
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a stock motor should have no problems with extended driveing take the car and get the rad and motor flushed first do it your self if you know what you are doing if all else fails get the rad place to do a system test to see what is failing
makka

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 Post subject:
PostPosted: Mon Jan 09, 2006 10:28 am 
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848cc
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Joined: Fri May 06, 2005 6:19 pm
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Location: Au
Thanks Makka,

Must admit, cos the car is new to me, and I have no real idea of history I'm leaning towards 'if in doubt replace it" at the moment.

If I get new parts, and replace them myself, I know at least that area of the car has been down properly, and shouldnt have to have any major work done on it for a while.

Good thought on the rad company though.. it might be something simple and then I can use the money for something else on the mini :-) Fixing the rear passenger side brake shoe that's just started draging might be a good start.. very annoying.

cheers

David


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 Post subject:
PostPosted: Mon Jan 09, 2006 10:30 am 
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thats what we are here for david to help each other out in keeping the mini dream alive .... and try to save a few dollars for the next thing that needs to be repaired
makka

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 Post subject:
PostPosted: Mon Jan 09, 2006 12:25 pm 
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Joined: Mon Sep 19, 2005 4:57 pm
Posts: 3635
Location: Gulgong
Minis dont have a lot of cooling capacity so the cooling system must be right to cope with hotter weather. If a car is running hot then it means there is one of two things happening.
1. There is not enough air passing through the radiator or
2. The is not enough coolant circulating around the system.
You only need a 25% reduction in either of the two above and its going to run hot.

I have just purchased off ebay, and taken delivery of a brand new 3 core radiator from Minisport in SA for my wife's 1100s which has been also running hot in this recent weather. It already has a new water pump so hopefully a good flush and a new radiator will solve that problem. If not I will put the auxillary radiator (heater core plumped between head outlet and bottom radiator hose inlet - As doc suggests) back into the system.

I will let you know how it goes.


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 Post subject:
PostPosted: Tue Jan 10, 2006 12:11 pm 
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Joined: Fri Aug 13, 2004 3:45 am
Posts: 2360
Location: SE QLD
A morrie 1100 land crab rad will fit too - I have no overheating in 40+deg heat

Hooroo

Rob Forsyth
Miniot!!

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 Post subject: Fan on correctly??
PostPosted: Tue Jan 10, 2006 2:17 pm 
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Joined: Sun Apr 11, 2004 11:32 am
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Location: Sthrn HiLoLands, NSW, Australia
drmini in aust wrote:
I've got a new 2 core in the 1293, it is not as good as the new 3 core (and freshair heater) in the 1360.

Considering the 2 core rad is 100 bux dearer (around $250 now) I reckon you are better just to add a heater core to what you have now- plumb it in between back of head and the bottom radiator hose takeoff. :wink:


Kev, I was reading a thing on a Mini gathering in Canada where KC pointed out that half the hundreds of engines had their fans on back-to-front....impeding the air flow rather than assisting it to extract heat out under the guard.

The problem is also reasonably common in Aus as well....this might be a great little sticky for the How to??....(plse Dr :?: )

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 Post subject:
PostPosted: Tue Jan 10, 2006 2:21 pm 
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Joined: Wed Nov 24, 2004 10:23 am
Posts: 1492
Location: Armidale, NSW
CPOCSM wrote:
A morrie 1100 land crab rad will fit too - I have no overheating in 40+deg heat


I thought the land crab was a Austin 1800 :?

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 Post subject:
PostPosted: Tue Jan 10, 2006 5:41 pm 
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Joined: Wed Sep 08, 2004 9:27 pm
Posts: 15912
Location: Wodonga - Vic/NSW border
on anything other than a really worked motor - get the radiator tanks taken off and the rad cleaned properly, flush the block out until the water comes out clean, and put in a new high flow water pump and thermostat... any overheating problems after that need the help of a professional. I can't keep the engine in my cooper S hot enough, and it's all 100% stock

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