craigdiver
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| posted on 27/9/17 at 07:51 PM |
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Cooling system
Will be ordering up hoses and fittings to plumb up my cooling system. Never done this before so looking for any hints & tips or common
pitfalls?
I was thinking of putting bleed screw on radiator top hose and drain plug on bottom hose. I will be fitting the temperature sender supplied with the
Acewell dash in the top hose.
Any advice much appreciated
If it ain't broken, fix it anyway (just because).
Building - BMW powered Haynes Roadster/442E hybrid.
Volvo C30 T5 Polestar
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Nickp
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| posted on 27/9/17 at 08:37 PM |
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Have you decided on a rad?
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craigdiver
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| posted on 27/9/17 at 08:40 PM |
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Hi Nick, yes, got the polo rad, good fit in nose cone, hopefully will be sufficient to cool engine. Bought decent high wattage fan to mount behind the
radiator so fingers crossed!
If it ain't broken, fix it anyway (just because).
Building - BMW powered Haynes Roadster/442E hybrid.
Volvo C30 T5 Polestar
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Nickp
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| posted on 27/9/17 at 08:50 PM |
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quote:
Originally posted by craigdiver
Hi Nick, yes, got the polo rad, good fit in nose cone, hopefully will be sufficient to cool engine. Bought decent high wattage fan to mount behind the
radiator so fingers crossed!
OK for road use but I found out last week that it's really not up to hard track use. I'm currently speaking with Coolex in Nottingham.
They do 420mm wide 392mm high 70mm thick one based on an Escort design, which looks like it'll be a good fit. You can have the pipes anywhere
you want and no filler. Just waiting for a price, but won't be cheap.
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craigdiver
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| posted on 27/9/17 at 08:53 PM |
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quote:
Originally posted by Nickp
quote:
Originally posted by craigdiver
Hi Nick, yes, got the polo rad, good fit in nose cone, hopefully will be sufficient to cool engine. Bought decent high wattage fan to mount behind the
radiator so fingers crossed!
OK for road use but I found out last week that it's really not up to hard track use. I'm currently speaking with Coolex in Nottingham.
They do 420mm wide 392mm high 70mm thick one based on an Escort design, which looks like it'll be a good fit. You can have the pipes anywhere
you want and no filler. Just waiting for a price, but won't be cheap.
That’s good it is handling road use, can’t see me doing track days or racing - but you never know.
If it ain't broken, fix it anyway (just because).
Building - BMW powered Haynes Roadster/442E hybrid.
Volvo C30 T5 Polestar
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ian locostzx9rc2
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| posted on 27/9/17 at 09:03 PM |
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Plus 1 for coolex radiators had one on my striker .
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ste
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| posted on 27/9/17 at 10:09 PM |
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Avoid Auto Silicone Hoses, there are plenty of other companies out there that won't bleep you around.
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Nickp
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| posted on 28/9/17 at 04:28 AM |
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Fit the lowest available 'stat, think mine's 82deg.
Fit the most powerful fan you can, think mine's 220W.
Shroud around rad so air has to go through it, not around.
Make sure the hot air's got somewhere to go, plenty of vents at rear of bonnet.
Run 'water wetter' instead of anti freeze.
Do ALL of the above and you might just might get away with running a std Polo rad with the BMW engine 
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Nickp
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| posted on 28/9/17 at 10:52 AM |
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Coolex 'short' Escort rad, £210 delivered. Pipes (32mm) wherever you want them, fan switch boss, bleed/return pipe, drain bung etc
 
Description
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nick205
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| posted on 28/9/17 at 12:51 PM |
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I used a Polo rad in my Pinto MK Indy - kept it cool enough on the road.
Never bothered with a bottom hose drain plug - worked on the basis that simply releasing the end of the bottom hose from the radiator would let it
drain.
Make sure you get the right diameter hoses. Seem to recall the Polo rad had Ø32mm hoses. Engines can obviously be different diameters. Ø38mm on the
Pinto IIRC.
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rusty nuts
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| posted on 28/9/17 at 03:59 PM |
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Water Wetter will not stop coolant freezing and possibly causing major damage to the engine , it is suitable for use with antifreeze and can drop the
coolant temperature by as much as 20 degrees.
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craigdiver
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| posted on 28/9/17 at 05:40 PM |
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quote:
Originally posted by Nickp
Fit the lowest available 'stat, think mine's 82deg.
Not sure if you are running a different ECU (mine is MS42). The cooling fan is controlled by the ECU and works in conjunction with a heating element
in the thermostat housing. If you floor the pedal the ECU uses the heating element to open the thermostat and fires up the cooling fan in anticipation
of the forthcoming heat load.
Clever Germans! (and 10/10 for over-complicating a relatively simple tried and tested system!!!)
If it ain't broken, fix it anyway (just because).
Building - BMW powered Haynes Roadster/442E hybrid.
Volvo C30 T5 Polestar
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