Alloy radiator

[neal1980]

Just bought a universal alloy radiator for my little project im building but need to add a bleed point.

Cant find any on the net looking for alloy I guess to be tig welded on.

Any idears??


Regards

Neal

[stevieturbo]

neal1980 said:

Cant find any on the net looking for alloy I guess to be tig welded on.

Any idears??


Regards

Neal

Find any what ? What exactly are you looking for and trying to achieve ?


If its a bleed point on a header of the radiator. Just weld a boss on and drill it and tap it for a bolt.

Bolt out - bleed
Bolt in - no bleed.

[sparkybean]

is there access to drill+tap without welding a boss?

[neal1980]

Yes I need a boss and bolt didnt know if they were special ones.

Dont fancy drilling and tapping as the end tanks dont look that thick and I need to get some other stuff tigged anyway.

[stevieturbo]

You probably can buy something special if you needed.


But a simple lump of aluminium, drill a hole and fire a normal easily available bolt into it, will be the cheapest.

I defo wouldnt tap the header tank as is...it will be far too thin.

[brogenville]

If you want to save yourself time drilling and tapping, perhaps you can find an ally bolt that you could weld straight on? Someone's bound to make them?

[stevieturbo]

What use would welding a bolt on be, when he needs a hole ?

[stainless_steve]

stevieturbo said:

What use would welding a bolt on be, when he needs a hole ?

I think he's on about a nut,not a bolt,maybe

[brogenville]

Errr yes... I think a nut might be of more use indeed. I'll blame it on the night-shift.

[Pumaracing]

Just out of interest why do you think you need a bleed valve in the radiator anyway? I've never owned a car that had one or needed one. The header (expansion) tank is always the highest part of the system, or at least should be, and provided it is then the whole system should fill just fine. If for some obscure reason you've got the radiator situated higher than everything else then you needed a radiator with a fill cap in the first place.

[stevieturbo]

Pumaracing said:

Just out of interest why do you think you need a bleed valve in the radiator anyway? I've never owned a car that had one or needed one. The header (expansion) tank is always the highest part of the system, or at least should be, and provided it is then the whole system should fill just fine. If for some obscure reason you've got the radiator situated higher than everything else then you needed a radiator with a fill cap in the first place.

The remote expansion tank may indeed be the highest point. But that doesnt mean to say all pipework runs upwards to that same point.

On my own car, the highest point on the radiator, is higher than the pipework going to/from it. So once air is in there, without a bleed it could never be expelled.

But yes, the expansion bottle is the highest item in the cooling system ( I'll ignore a dodgy slightly higher heater hose though )

[neal1980]

Pumaracing said:

Just out of interest why do you think you need a bleed valve in the radiator anyway?.

I was just copying the original TVR Chimaera radiator setup and that had one so guessed it would be needed as I did used to bleed air from this.

Neal