Is it possible to have one of my heat exchangers welded? Theres a guy down the road from me thats a cert. welder, any way they can be welded? I have 2 small pin holes in the one under the footwell.
no1chevyboy
New member
yes they can be welded
ExpertXViper
New member
Yea they can be welded but make sure you have them pressure tested before you re-install them.
I was hoping that I could just have him weld them on the sled, and just run the sled and see if they leak. Cause if they leak them I would have to take them off and just throw a different one on there.
bufalobob
Member
welding on the sled is fine. just make sure you unplug the cdi & all other electrical.
bob
bob
YAMyy
New member
it would be better and easier to take them off to get welded hand to get my rear exchanger welded but make sure you get all the antifreeze out.
I have repaired many heat exchangers, I use a product call "aluma-braze" Basically it is just like brazing steel but with aluminum. Very easy and no electrical malfunctions to electronics. Just be sure to remove all coolant from effected area, it is acutally best to hav the cooler drained so you can get the best heat transfer. Al
Is this product the same as that alumaloy product that was offered in infomercials on TV for awhile?alswagg said:
Not sure, I have never heard of alumaloy. Look up http://www.johnsonmfg.com/
I saw they now have a new product called wonderbraze, which is a flux cored aluminum rod for brazing. I have not tried this rod though. Al
I saw they now have a new product called wonderbraze, which is a flux cored aluminum rod for brazing. I have not tried this rod though. Al
I have one of those "expensive" welding machines and have not tried my hand a brazing aluminum. We hav esome welding rod at work that we can weld zinc or aluminum with, not sure of the name.
sleddineinar
VIP Member
Very important to get all the coolant out. I brazed my front heat exchanger last year, and until I got all the coolant out it wounld'nt heat up enough for the brazing rod to flow. it will be the same way with a TIG. Any contaminant and it won't take. Change_up is right do as much of the prep work yourself, if you have someone TIG it.
I found a brazing rod at Home Depot from Benzomatic. It just said Aluminum Brazing & Welding Rod on the package. The rod has a lower melting point than the Alumabraze that has been mentioned. Get a stainless steel wire brush and clean the surface area around the leak with the brush until it is nice and shiny. You can use a hand held propane torch with a turbo tip and Mapp gas. You can do it yourself for really cheap. Mine still looks like it did that day I did it... And the most important thing... it does not leak!
I found a brazing rod at Home Depot from Benzomatic. It just said Aluminum Brazing & Welding Rod on the package. The rod has a lower melting point than the Alumabraze that has been mentioned. Get a stainless steel wire brush and clean the surface area around the leak with the brush until it is nice and shiny. You can use a hand held propane torch with a turbo tip and Mapp gas. You can do it yourself for really cheap. Mine still looks like it did that day I did it... And the most important thing... it does not leak!