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Author: Subject: ZX12-Running temps
the moa 2

posted on 22/12/06 at 11:21 PM Reply With Quote
ZX12-Running temps

I have finally started my engine and now need to set up the cooling.

Im running an electric water pump with a thermostat controller and also a adjustable fan switch.

Can anyone advise what the running temp should be and at what point the fan should come on.

Any help mucho appreciatedo.

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RazMan

posted on 22/12/06 at 11:28 PM Reply With Quote
Are you using a Davies Craig pump & controller? If so you can lower the range of the working temp of the controller by putting a resistor across the sensor (if you think you are running too hot)

[Edited on 22-12-06 by RazMan]





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DIY Si

posted on 22/12/06 at 11:36 PM Reply With Quote
I seem to remember they run a little hotter than most engines, but as to weather this is due to under cooling or because they're supposed to I don't know. Something in the region of 95-98 ºC.





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the moa 2

posted on 22/12/06 at 11:42 PM Reply With Quote
Yes it comes with the resistor to reduce if required.

So 95-98 hot idle and if it steps over switch the fan on yes ?

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DIY Si

posted on 22/12/06 at 11:53 PM Reply With Quote
Sounds about right to me, although I'd wait for someone to confirm before trusting me on the life of your engine!
Try U2U'ng G.MAN, as he runs a ZX12R in Malta ( I think) and if he keeps his cool, you should be ok.

[Edited on 22/12/06 by DIY Si]





“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
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clutch_kick

posted on 23/12/06 at 01:46 AM Reply With Quote
quote:
Originally posted by DIY Si
Sounds about right to me, although I'd wait for someone to confirm before trusting me on the life of your engine!
Try U2U'ng G.MAN, as he runs a ZX12R in Malta ( I think) and if he keeps his cool, you should be ok.

[Edited on 22/12/06 by DIY Si]


Erm .... no .... I think he's from Cyprus However i'm hoping to be the first guy to run a ZX12R BEC in Malta lol

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DIY Si

posted on 23/12/06 at 02:58 AM Reply With Quote
Well, I knew one of you was from Malta! Cyprus isn't that far away!





“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
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Hellfire

posted on 23/12/06 at 09:27 AM Reply With Quote
95 to 98 is typical - our fan kicks in at 96

It's the oil temp that takes the hammering... esp on trackdays. If your going to doind plenty I'd advise an oil cooler.

Steve






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the moa 2

posted on 23/12/06 at 09:48 AM Reply With Quote
Cheers hellfire .

We do have an oil cooler already thanks.
I dont need to put a fan on that aswell do i ?

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G.Man

posted on 23/12/06 at 10:47 AM Reply With Quote
I ended up fitting a pace 4 core westfield race rad to mine to keep it cool, ie not boil over...

The polo/golf rad wasnt up to the job and the coolant capacity was too low for cyprus temps...

With ambient temps in the high 30's and low 40's water temp in traffic was a nightmare..

That was ith water wetter as well..

it runs @98 when its all ok...







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the moa 2

posted on 24/12/06 at 10:30 AM Reply With Quote
Cheers G.Man.

Hopefully my polo rad will be alright for UK temps. Is the Pace Westfield rad a stright swap or did it take some modifications to fit ?

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G.Man

posted on 24/12/06 at 11:14 AM Reply With Quote
Not a straight swap, inlet and outlet are on opposite sides instead of same sides..







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rjbrookes

posted on 30/12/06 at 07:00 PM Reply With Quote
i have had mine 115-120+ on a track day........ and had to back off.....

mines a never ending story!!

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