Working on fitting a 2000 GSX750F engine with BST-36 carbs in a 1980 GS550E frame. The goal is to keep the stock GS550 bodywork, seat, etc.
I'm running into some slight clearance issues with the tank to carb tops and the petcock to air filters. I swapped from K&N filters to RamAir and they're much more forgiving. After trying a few different brackets, etc., I think I have come to a solution that allows everything to clear and the seat to latch. However, the filter on the #1 throat is going to be mashed a little bit (actually, both outer throats will be mashed slightly, simply because of the frame).
Is this acceptable? It's pretty much gonna HAVE to be unless I throw out the stock bodywork. As you can see in one of the pics, I'm using Bandit 1200 air box rubbers, so they'll have an internal velocity stack. The stacks are clear by a mile and there's probably at least an inch of space from the end of the stack to the filter, even on the mashed areas.
In this pic, there's a piece of fuel line to mock up where it would run off the petcock. It will mash the foam on the #1 and #2 throats just slightly and run up to the center of the bike to a T-splitter (dual fuel inlets on these carbs).
This pic shows a velocity stack on the #3 throat, to illustrate that even though the foam is mashed in spots, there's still plenty of space around the stacks inside the filters.
