PeteN
Silver Member
I did the same with some 5/16" diameter copper tube, plugged the end, drilled some small holes and also put a rubber cap on the end so it is less likely to gouge anything. I may also added a valve to restrict the air pressure but the air gun I started with has pretty good control of the pressure. Nice thing about the copper is that it is very malleable so you can bend it if you need to and straighten it out when your done. I bought the Radiator Genie before I did this but it didn't fit very well between the stacked radiators on the LS MT3. I still use it though for cleaning off debris in more open areas and it works great for that.