Mk4 Rick

I want to modify my car radiator abit and wanted to no if I can braze alloy.My whole radiator is alloy but I think its been tig welded.

3i Jim

Your rad would have been tig welded. I don't think you can braze aluminium, I might be wrong.

Mk4 Rick

I googled not long after and it says you can lol.Tig welding is an art I just wanted something modifying

little bram

yeah you can ive had mine done before

foreigneRS

yes you can. i used to braze aluminium air con pipes. it's difficult though as they are not hot enough and then suddenly they just disappear

Mk4 Rick

What sort of temp would I need to melt the stick rod.Am I best off getting fluxed or pre-fluxed

daveandhelenturbo

iTrader: (1)

I'd just take it to someone and get them to tig it. Yearn fabrication in Oldham would do it for you. Geoff is a great guy and is fantastic at tig welding aluminium.www.yearnfabs.co.uk

Dave

foreigneRS

i would also have it tig welded as brazing is really difficult especially on a radiator that quickly dissipates the heat. much finer control with tig.

stevieturbo

Yes you can braze it.

but there are also products like Lumoweld, Alumaweld or whatever it's called that are designed for aluminium

ie this sort of thing.

http://www.frost.co.uk/hts-2000-alloy-repair.html

ajamesc

I like fluxed brazing rods but brazing is hard if you haven't done it before don't attempt it on your rad lol. It's a juggling act between getting the metal hot enough with out melting it and heat rod just to the point of melting so it all flows togther with out melting!
Ive Brazed copper pipe to steel pipe before so it's all do able

Mk4 Rick

Cheers Dave I will give them a bell nxt week.