The CBR250Ri Turbo

Plumbing the Depths


Once the hairdryer was installed, it was time to get the plumbing sorted out. No, Neil hadn’t backed up the dunny again (this time). Rather, we needed to sort out the oil and coolant lines. Coolant wasn’t going to be a problem, what with the radiator, the water pump and half a dozen external coolant lines within easy piping distance. Spoiled for choice in regard to coolant, we were. Oil, on the other hand, was both more critical and more difficult. CBRs don’t have any external oil lines that we could tap into, so we had to look a bit harder to find a suitable supply of high-pressure clean oil. Steve suggested using a coolant feed instead, given their proximity and ease of connection. Initially it sounded like a good idea, but on sober reflection (which took a while, ‘coz we’re only very rarely sober) we spotted a flaw. If we used coolant for both cooling and lubrication, the water pump would get confused. Ecstatic with our powers of deductive logic, we smacked Steve around the head with the manifold again (even harder this time), and went back to pondering the problems of providing the turbo with slippery.

Strangely enough, it was Richard who made the breakthrough. Never one to sit on his hands and use his brain while he could be fiddling with something critical, he fired up the bike and started unscrewing bolts. Sure enough, pretty soon he wound up with a faceful of high-pressure oil. With his typical arse (he has no class whatsoever), he’d unscrewed the cover on the oil pump inspection port and we had a supply of nice clean pressurised black goop to lubricate the whirly thing. Bonus!

Finding a return port was a bit more difficult, and we had to resort to handing Richard the electric drill, covering our eyes and standing back. It meant a whopping great big hole in the sump, but there really wasn’t any other way.