Expansion tank leak

Expansion tank leak

Author
Discussion

Buggy

Original Poster:

128 posts

135 months

Sunday 4th October 2015
quotequote all
Hi,
just discovered a pin prick hole on the expansion tank. Is it ok to get welded or should I buy a new one?
Cheers,
Mark

bobfather

11,171 posts

254 months

Sunday 4th October 2015
quotequote all
Welding should work if you can find someone that can weld aluminium. A replacement tank will cost a fortune

Sardonicus

18,928 posts

220 months

Sunday 4th October 2015
quotequote all
I got someone out of trouble that had a random external deep pit (was leaking) put in a self tapping screw with some sealer lasted 2 years so far scratchchin obviously a blob of TIG is better but I dont have ally welding facilities frown and my local machine shop was shut rolleyes

ianwayne

6,244 posts

267 months

Monday 5th October 2015
quotequote all
There's some cold metal epoxy putty stuff about that may do the job well.

Sardonicus

18,928 posts

220 months

Monday 5th October 2015
quotequote all
ianwayne said:
There's some cold metal epoxy putty stuff about that may do the job well.
This kind of thing will do it no bother http://www.ebay.co.uk/itm/ABRO-STEEL-REINFORCED-ME... this is one I have used before that comes recommended but my fav are Devcon products

Dungman

255 posts

170 months

Monday 5th October 2015
quotequote all
Metal epoxy didn't work for very long for me. Used ones are available from the usual breakers, think I paid £50.

BoostedChim

541 posts

224 months

Monday 5th October 2015
quotequote all
Dungman said:
Metal epoxy didn't work for very long for me. Used ones are available from the usual breakers, think I paid £50.
Same for me, I tried a couple of times. Even roughing up the surface and using industrial Belzona didn't work. Mine was due to the previous owner using blue/green coolant and then someone had topped the expansion tank up with red coolant. The reaction left about 10 pin holes in the tank.

Buggy

Original Poster:

128 posts

135 months

Tuesday 6th October 2015
quotequote all
Thanks chaps.
Took another look at the tank and I don't think it will be long before other holes appear so a replacement it is.
Anyone got one for sale or should I contact the usual breakers?
Cheers.