Oil coolers

the oil coolers for this build I have chosen to use a gsxr1100 cooler from the 1st generation suzuki's rather than the gsf1200 cooler, the gsf uses a 2 bolt flange to attatch the lines to the cooler, the gsx-r uses an m16 banjo bolt. If i were to use the gsf cooler I would have to track down special adapters to use the AN- fittings, and so far these adapters i have only seen available in America. Earl's supply them if you've got money to burn. with this in mind, I can buy a male to male an-8 to m16x1.5 straight union adapter for a fraction of the price.

As well as the main Cooler I will be plumbing in a secondary Oil cooler that will cool the head. On the rear of the gsx-r/gsf engines is a Y shaped hose that picks oil up from the crank and delivers it to the rear of the rocker cover, Yoshimura adapted this to sipply cool air by taking the two rocker cover connections and joining them together with a Y-piece connection and having those go to one end of a secondary oil cooler, and taking the connection from the top of the crank to the other side of the cooler, supplying cooler oil to the top of the head.

the above picture shows the cooler and how it is supplying oil,taken from an old yoshimura parts catalogue.
below is the coolers and the engine together - still much work to do on the engine, but even the little steps forward are extra steps to finnishing :)

Below is the yoshimura Bonneville (the 1100 street bike, the 750 was given the name tornado) you can see infront of the main cooler the secondary head cooler and makeout the routing of the oil pipes.
im using a smaller cooler that will be mounted in the front of the nose cone - this particular cooler was from a gpz600.