Originally Posted by mas335
Cruz, Sorry, I failed to answer your question!
I see no reason why you need to drop the engine. Not being exactly familiar with the 87 engine differences I am guessing the cooling hose tubes mounted on the heads are in the same location. You will not be able to remove the rear valve cover without removing the water tube. The front valve cover can be removed without removing the front water tube but only if you pull the front coils, ( as best as I remember).
Thanks for the excellent info and pics Mas.
"I reckon it would be good getting a heap of XR's in the one spot and watching a heap of blokes kicking fuck out of there bikes and swearing."