So we received a phone call from a local guy a little while back with an "unusual request" as he put it. He wanted us to install a supercharger on his BKing. Well we couldn't say yes fast enough to that one!
As the project is nearing completion, we figured we would post a build thread on this unusual build. From what we could find, they may very well be the only RTS kit equipped bking in the country.
While this was a complete kit straight from England, there were certain aspects of it we did not like. Like for example there's no concrete numbers on the boost and HP the bike will make. And chances are a restriction would of had to of been added on the inlet of the supercharger to limit boost. BUT too much of a restriction and the blower will start sucking oil past the seals.
With the gen 2 motors having such high compression, much over 4psi could cause major engine problems. So we decided to pull the engine, and install a base spacer, pro mod head studs, new valves, springs, and adjustable cam gears. This way we have some forgiveness built in to the tuning process, and we can change the pullies to add boost to get the HP where we want it.
The next thing that struck us as odd, is how the fuel system was instructed to be ran. The kit had a bigger in tank fuel pump to be used, however when it came to regulating the fuel pressure they wanted the stock regulator to be removed and plug the port so the pump would be running around 75-80psi of fuel pressure all the time. Not only is that just the wrong way to go about doing a fuel system, that simply puts too much strain on the pump to be at full pressure all the time. Not to mention the mess it would cause for tuning.
Now space is much more limited on these bikes, but with a little careful planning, an external pump, returning fuel system can be ran with no problems. We're also running a 3 bar map sensor, so we can do boost referenced fueling just like on a turbo gen 2.
So here's what we started with...
As the project is nearing completion, we figured we would post a build thread on this unusual build. From what we could find, they may very well be the only RTS kit equipped bking in the country.
While this was a complete kit straight from England, there were certain aspects of it we did not like. Like for example there's no concrete numbers on the boost and HP the bike will make. And chances are a restriction would of had to of been added on the inlet of the supercharger to limit boost. BUT too much of a restriction and the blower will start sucking oil past the seals.
With the gen 2 motors having such high compression, much over 4psi could cause major engine problems. So we decided to pull the engine, and install a base spacer, pro mod head studs, new valves, springs, and adjustable cam gears. This way we have some forgiveness built in to the tuning process, and we can change the pullies to add boost to get the HP where we want it.
The next thing that struck us as odd, is how the fuel system was instructed to be ran. The kit had a bigger in tank fuel pump to be used, however when it came to regulating the fuel pressure they wanted the stock regulator to be removed and plug the port so the pump would be running around 75-80psi of fuel pressure all the time. Not only is that just the wrong way to go about doing a fuel system, that simply puts too much strain on the pump to be at full pressure all the time. Not to mention the mess it would cause for tuning.
Now space is much more limited on these bikes, but with a little careful planning, an external pump, returning fuel system can be ran with no problems. We're also running a 3 bar map sensor, so we can do boost referenced fueling just like on a turbo gen 2.
So here's what we started with...
