Alloy radiator

Where can I get one

Anyone know anything

I got one for my Punto gt recently on eBay, maybe they fit the Uno too??

Apparently they don't. I did think that but I don't have a gt rad to try it

All my Unos have had alloy rads, certainly the cores were alloy. Or do you mean alloy as in the whole thing?

Alloy for the whole thing

I know the standard rad are in the middle I want all over

Chas Uno wrote:All my Unos have had alloy rads...

That's odd Chas...

I thought the core was aluminium (a chemical element in the boron group with symbol Al).

An alloy is a mixture or metallic solid solution composed of two or more elements

Back to the original question and not splitting hairs lol...

radtec don't do owt for an Uno maybe you could search the web or try and get a standard one to fit

I don't think you will find an off the shelf solution as there is not a big market for UT parts.

Thant means you may need to look at a custom build which won't be cheap. Plenty on google hers one of the first results - I've no idea if they are any good or price.

http://www.grsmotorsport.co.uk/customradiators.html

looking at thives Radtec may do a custom - may be worth going direct

How come you need it to be all metal? maybe the price is a show stopper?

My car get hot so I want a full alloy rad

I edited the above.

If it's just an overheating issue you may have lost slow speed on the rad fan...

Has your UT got a 3 wire fan speed temp switch on the rad? if it has it's not uncommon for the slow speed resistor pack in, so you get no fan until your rad warms up more to activate full speed.

Oh the slow speed resistor is somewhere at the bottom of the fan cowling and the coil / resistive element rusts away to leave an open circuit.

I bypassed (short circuited) my knackered resistor so I get full speed at the lower temp.

Make sure you insulate the bypass well or it will short and blow the fuse - leaving you with no fan at all which can lead to overheat and a warped head.

Hopefulley a 50p fix, not £500

Ive got a spare GT rad laying about will compare it to my Uno one when i get a chance.
Probably the fan/thermostat housing may differ but you would think water in and out would be the same....

Yeah I think my resister for slow speed has gone where can I get one or what can I do

Matt if a gt one fits with a couple of mods then I will get the gt alloy rad
I got a mate how said he can modify it a little

I don't think you can get the resistor, but as I said it can be bypassed (short circuited) so you get full fan speed at lower temp and it stays on when the fan would normally switch to high speed. I did mine with a double ended male spade connector and good insulation IIR.

You'll still have the same issue if you use your existing fan on a GT rad .

I'd say fix your fan first and see how you go with the temp. The standard rad should be good enough in UK temperatures when it's working properly IMO.

You got any pics or diagrams on how you bypassed it

No Sorry, but hope I can explain.

Probs best to disconnected the battery first as the fan feed to the temp switch is always live and could cut in at any time LOL.

Find temp switch in the rad.

follow wires towards fan
find the wire that goes from rad switch to resistor (1) - think it's benind the rad low down

find wire that goes from resistor to fan (2)

remove resistor

join (1) to (2) - could solder it.

insulate loads and loads (if it shorts to the body work it will blow the fan fuse and you will have no fan)

ensure any slack wire is secured so it can't get tangled in the fan

run your uno and keep a close eye on the gage to make sure it's now cutting in at cooler speed - don't wait for it to go into the red it should now cut in at a lower reading on the temp gage than it has been doing.

There are other issues that you could have with the cooling system that a new rad won't fix...

neglecting coolant - should be replace every 2 years for blue, 5 years for red antifreeze, with a good flush.

blocked cooling system - can get an air lock if that thin pipe from top of rad to headder tank blocks

antifreeze not diluted enough. Yes pure antifreeze may offer more corrosion protection but carries less heat and so is really bad for the system

there are others factors that can cause issues like loss of pressure in system from any leak, knackered water pump but for me the number one likely suspect is the resistor because it's in a poor location imo.

Ok I will try this when it all goes back together

Could you take a pic of what u done

bit of a problem mate



can't get to it

Arr I see maybe difficult

you dont need an alloy radiator the standard one is fine, the punto gt rad is no bigger and doesnt fit,

there is something wrong somewhere, your engine could be running lean? knackered water pump? thermostat? is it leaking coolant? head gasket?