I currently have a Koyo rad fitted, but it's leaking a fair bit from the bottom (not sure how this has happened).

 

I guess it will need replacing? I had a search and gather that products like Radweld aren't so great for these cars? Can it be repaired?

 

I've been looking online for a Koyo rad, and found this, although that seems suspiciously cheap?

 

Would I be better off going for the Japspeed group buy on at the moment, and will the Japspeed radiator fit the same pipes that are currently attached to my Koyo rad?

You sure its the rad and not the bottom hose? Jeff posted a thread about this recently - the vacuum created when the engine cools causes the bottom pipe to distort and leak..

Yeah it's definitely the radiator leaking and not a hose. It only leaks when the radiator is warm/hot though... Replacement time?

Do you have a thermo coupling (probe-fits inside of pipe) to operate a fan on the rad because I’ve got a leak from the same area which I need to drain the rad and sort it for JAE

Nah, I've got a viscous fan fitted to mine. The leak is coming from the bottom of the rad, on the drivers side.

Get it out and have a good look mate, it may be able to be repaired (since it's a koyo) falling that It's new rad time :)

I have a brand new spare one from memory if you get stuck

Standard or uprated?