My GSX-R just had two coolant pipes - in and out! The R1 has far more going on so I wanted to check my intended use before cutting up any silicon...



I've based my diagram on this:

ive got the pipe from the throttle bodies going to the header tank. theres a wee pipe from the heads going into them (i think) see the wee pipe on the cooling inlet at the rear, thats the water pump breather...mine goes to the exp. tk too.
i had a diagram but cant find it

Do you have a water pump breather next to the water pump inlet? Its a very small (5mm?) pipe on mine, which I have run to the top of the header tank to prevent airlocks.

Also instead of a take off from the thermostat housing, I have a pipe from the top of the radiator as its slightly higher.

Apart from that it seems pretty much the same!

mine plumbed the same so should be ok

I've been looking into dual rad plumbing for my car and I believe that it is more efficient to have the rads in parrallel rather than series. Heat transfer is proportional to the temperature gradient so if both rads are fed hot water the gradient is steeper and the transfer is quicker- rather than one getting hot water and the other getting warm water.

Rob

I agree with the theory, It would just require a fair bit of weight in hoses + extra water to fill them...

I do have a water pump breather, and it T's into the ITB return on the right there. (no shown)
Would it be worth connecting this to the header rather than into the bottom right T? not sure how/if this would affect circulation?