Making the Road King Romp
And It Still Looks Stock
You’ve heard it before: Speed is addictive. It’s one of those things that you just can’t seem to get enough of. Those were our exact thoughts while we eyed our colleague’s ’98 Road King fuelie. With the exception of the exhaust system and the Screaming Eagle cam, the motorcycle was the same as it was the day it left the factory. We wanted to take this 80-inch fuel-injected motor and give it the performance that would equal one of today’s 95-inch kits. We wanted to gain significant horsepower and torque without increasing displacement. Considering this, we would need the help of someone well known for making big power without sacrificing durability – which a well-ridden Road King needs.
One of our requirements for the Road King was to have the bike remain as stock-looking as possible. We wanted to have a real sleeper on our hands — a bike capable of holding its own at a light and comfortable riding two-up on a hill.
Our search landed us at Patrick Racing in Garden Grove, California. Nigel Patrick has been hot-rodding motorcycle engines for the last 25 years. His specialty these days are V-twin powerplants. We conveyed our thoughts about the hop-up we were planning on doing. After a few moments, he came back to us with the suggestion of adding a Dynojet Power Commander II Hooter 2-into-2 pipe and doing a little of Patrick Racing’s CNC porting of the existing heads, J&E; pistons, and a 0.560-inch lift Patrick Racing cam. We chose this exhaust to retain the almost stock look of the bike. If we had gone with a 2-into-1 pipe, we would increase our dyno numbers around four or five horsepower. Nigel figured that by making those modifications, the motor would give us the horsepower gains we were looking for without pulling the motor from the bike to facilitate additional stroke. Nigel’s plan would save us time and allow us to keep more of our hard-earned cash in our pockets.
We dropped off the bike and Nigel placed us in the capable hands of one of his top men, Doc. The Road King was rolled onto a lift and Doc tore into it.