well,, after a few years of tooling around with the twin-cam mini donks running with alloy rads, & with the grunt we`re getting from the turbo one now i figured it`d be best to have a gork inside the rad, so I cut the bottom tank off one that we`d used for more than 3 years & had a look-see,,, used a sooper-dooper thin cut-off wheel in an angle grinder & open-sesame
nice & clean & all good (bar a couple of bits of soft goop),,, but i do use good quality corrosion-inhibitor so obviously that worked well

,,, so,,, i cleaned & wired brushed & cleaned again to get the alloy edges nice & shiney new,,, welded her up & sweet as a nut
the turbo Twinky moke runs 18psi of boost , LOTS of Grunt, & runs on 82deg temp everywhere
No-problemo
Oh & the tanks on mine have the sort-of Sqare-corregated look to them , they`re quite thick material,,,
the flat-pollished ones are a bit thinner but they`re not going to crack before the core does if you`re worried,,, just don`t let anything hit the cores/fins as that part of them is very thin
otherwise i`m quite happy with them & easy to clean out with a thin stainless-steel ruler shoved down each core
piece of P!$$ really

don`t know what all the fuss is about actually
Most of those late model alloy rads with plastic tanks are crap tho,,, i wouldn`t touch one with a 10ft barge pole
