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PostPosted: Tue Mar 08, 2011 9:02 pm 
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Give Ash some flowers Nick .
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Location: Toowoomba Region, QLD
woodwormm wrote:
heater cores are usually the go but they can get a lot dearer than 80 bucks, i reckon a lot of us contemplating auxilliary rads would like to see? :)


When I did mine I just went to the bike wreckers and got one of the radiators off of a Honda CR80. The bolt holes almost line up with those on the clutch cover and I only had to make one additional bracket to hold it on. Plus, with a motorbike radiator it was always designed to be exposed to the elements where as generally a heater core isn't.

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PostPosted: Wed Mar 09, 2011 3:12 pm 
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998cc
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1018 - did you get an aux bike radiator? ie one without a pressure cap?

i remember now my KLR had a capped radiator and one without a cap....

how much they set you back for a 2nd handy bike radiator, i've only looked on fleabay and they seem to be up around 150 bucks...


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PostPosted: Wed Mar 09, 2011 5:09 pm 
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998cc
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Ive been looking into this myself,

The only reason to remove the engine fan is if its too noisy or you are worried about the half odd horse-power it saps.
Its more than up to the cooling task.

A 12 inch fan will fit inside the guard and is the best size to fit the radiator.
A 10 inch fan will fit on the engine side but you will need a resonably fast flowing one.

I would definately recomend a goof brand like davis craig, remember if the fan fails you could easily cook your engine. Dont forget warning lights or temp gauges etc.

Im will be running an OEX fan in mine they are the fastest flowing ones avaliable but a 12inch one will set you back $200 plus.


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PostPosted: Wed Mar 09, 2011 5:54 pm 
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998cc
998cc

Joined: Tue Sep 06, 2005 1:26 pm
Posts: 817
Location: Adelaide
This is what I recommend.

Buy a pair of AU Falcon thermos with integral shroud from the wreckers. These fans really kick ass and are a firm favourite with Aussie muscle car tuners; they move 3,000cfm air measured with the radiator in place (unlike some aftermarket fan vendors - eg DC - who quote figures for freestanding fans).

Should cost around $70 to $120. Don't be tempted to buy the cheap Chinese copies off ebay - the OE Ford items have the strong Bosch motors, the ebay ones don't.

I've got them on my V8 Rovers and they work much better than the old engine driven viscous fans. I think Larry Perkins once said they were worth an extra 12hp on a V8 at 6,000rpm over the mechanical fans.

Now cut them in half (they're all plastic) and fit one fan with its shroud to the Mini radiator. Remove the engine fan and front shroud and bolt the radiator with brackets to the inner wing - makes removal a five minute job.

Then buy a variable speed Delta Current Controller from the US.

The DCController uses a temperature sensor inserted between the fins in the radiator near the radiator outlet. The controller controls the fan speed by use of PWM (pulse width modulation) which is an efficient method of slowly ramping the fan speed up and down, which avoids large current surges that a simple relay control allows.

Brian Baskin makes these in his spare time in Navada. He doesn't deliver real fast usually (I waited 3 months for delivery), but his products are top quality and have found their way onto countless Mustangs and other US heavy metal that require serious cooling. Just check the Mustang forums to see how highly regarded this item is.

http://www.dccontrol.com/introf0.htm

Cost for the FK50P Controller with all wiring and attachments included in the kit is around $200 delivered.

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 Post subject: Re: Thermo fan
PostPosted: Wed Mar 09, 2011 6:38 pm 
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998cc
998cc
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Posts: 848
Location: Hoppers Crossing
poeee wrote:
Gunna run one of those chinese radiators and no engine fan. What size thermo fan works best?

What brand should I look for, or just go for one of the cheapies off ebay?

What is the best way to mount them? Inside the wheel well with a blanking plate of some sort, and a good seal between the rad and inner guard? Or straight to the radiator?


Scott, I mounted my Supercheap 10" in the inner wheel well as it would not fit (missed by that much!) attached to the radiator. I created a shroud as shown in my Megasquirt article here: http://www.ausmini.com/forums/viewtopic.php?t=67644&highlight=jb007s
I have no engine fan and have experienced no overheating issues (yet). If I were to do it again, I would most probably go with a 9" mounted to the radiator and nestled in the shroud. Also maybe a 2 core radiator or a alloy one. My Supercheap sounds like a gas turbine when its running... I believe that the fans that have a 'S" style blade are quieter, but whether this is marketing hype I don't know. My fan is controlled via my Megasquirt, but the Chinese alloy ones have a spot for a thermo switch (try tridon).

My 2c worth... Jim 8)

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Last edited by jb007 on Wed Mar 09, 2011 7:00 pm, edited 1 time in total.

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 Post subject:
PostPosted: Wed Mar 09, 2011 6:46 pm 
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1098cc
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Location: Perth
My aux radiator made by Chinese dudes as requested, sorry poxy phone pics

Image

Image

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 Post subject:
PostPosted: Wed Mar 09, 2011 9:59 pm 
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Give Ash some flowers Nick .
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Joined: Wed Aug 09, 2006 1:22 pm
Posts: 10149
Location: Toowoomba Region, QLD
woodwormm wrote:
1018 - did you get an aux bike radiator? ie one without a pressure cap?

i remember now my KLR had a capped radiator and one without a cap....

how much they set you back for a 2nd handy bike radiator, i've only looked on fleabay and they seem to be up around 150 bucks...


I got one with the pressure cap. It was the first one I came across that had outlets in the correct positions and pointing the right way in the right size.

I bought it second hand for $50. It had 1/2" outlets on it and I just chucked the garden hose on the end of it to flush it out both ways.

Excuse the dirty engine bay:
Image

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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina


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 Post subject:
PostPosted: Wed Mar 09, 2011 10:33 pm 
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1098cc
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Joined: Wed Oct 01, 2008 11:14 am
Posts: 1906
Location: Brisbane Qld, North side
Babes wrote:
My aux radiator made by Chinese dudes as requested, sorry poxy phone pics

Image

Image


looks like my design we were playing with, taking measurements etc for a front mounting but i never had time to go through with it.

looks good mate hope it works!


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 Post subject:
PostPosted: Thu Mar 10, 2011 1:34 pm 
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848cc
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Joined: Sun Nov 06, 2005 11:41 am
Posts: 192
Location: Melbourne
poeee wrote:
Haha. Reading tells me that a 9" will fit on the radiator, and a 10" may not.

Also... someone convince me not to waste my time and simply use the standard fan.


Personally I wouldn't bother. I've fitted a couple of them in the past, both replacing the original fan and also in addition to it. Saw no real performance advantage (in cooling or HP)

Now I just use the standard fans, free (I have a box full of them), reliable, work fine and lighter than a thermo fan setup!

Andrew


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 Post subject:
PostPosted: Thu Mar 10, 2011 3:01 pm 
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1275cc
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Location: Port Stephens, a little north of Newcastle, Australia
poeee wrote:
.....
Also... someone convince me not to waste my time and simply use the standard fan.

Plenty of discussion here :lol:
http://www.ausmini.com/forums/viewtopic ... sc&start=0


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 Post subject:
PostPosted: Fri Mar 25, 2011 12:06 pm 
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998cc
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Location: Hoppers Crossing
MG Rocket wrote:
poeee wrote:
.....
Also... someone convince me not to waste my time and simply use the standard fan.

Plenty of discussion here :lol:
http://www.ausmini.com/forums/viewtopic ... sc&start=0


How did you go... what did you decide on...

I'm thinking of a alloy radiator, there is a place in North Laverton that sell's the Chinese ones.

Jim 8)

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