hey i run that pipe on my 650 sn. i've never heard anything about the restrictor in line to the stinger? i've been told don't run the sizzler on a 701, but thats all. i will send you pictures of my set up. basically though, i can explain it. the main water feed line that comes from your pump, that goes to the bottom on the manifold attached to the cylinders. the idea is the exhaust helps regulate the water temp going to the jugs, if it's too cold the engine won't run right. so flow chart step one. water in to the manifold, through the jugs to the top of the cylinder head. from the head outlet, i have the water running to the bottom of the second part that bolts to the flange. the top hole on my flange is pluggedd. and the side port on my flange runs to the stinger. don't cut holes in the gasket between the manifold and the second pipe at the flange. any questions? i'll try to get my photo's up. it works great on my ski.
