100 HP Mods?
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Tourer
Joined: Dec 2006
Posts: 329
Likes: 1
From: Oldsmar, FL
100 HP Mods?
Ok, so I have this '99 RK that I love since I bought it 4 years ago. I just dumped a bunch of money into new paint and some other nice accessories. My only wish left for this bike is more POWER. It rides and handles great now, but I really want to have to hang on for dear life (well, almost) when I crack the throttle. I'm thinking boosting it up to the 100 hp range?
The bike is in excellent condition, about 55,000 miles, well maintained and cared for. I just had the cam chest rebuilt a little over a year ago, but all stock. That alone made quite the difference in the way it was running, but now I'm ready to spring for the good stuff. I know a lot of you guys have done this work to your bikes and I'm interested in hearing about it so I can decide the best way to go. Money is not too much of a problem, I'd just like to keep it reasonable.
It's a '99 RK Police bike, TC 88, Marelli injection (I know, but it works great.)
So fire away, and thanks!
The bike is in excellent condition, about 55,000 miles, well maintained and cared for. I just had the cam chest rebuilt a little over a year ago, but all stock. That alone made quite the difference in the way it was running, but now I'm ready to spring for the good stuff. I know a lot of you guys have done this work to your bikes and I'm interested in hearing about it so I can decide the best way to go. Money is not too much of a problem, I'd just like to keep it reasonable.
It's a '99 RK Police bike, TC 88, Marelli injection (I know, but it works great.)
So fire away, and thanks!
Thread Starter
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Tourer
Joined: Dec 2006
Posts: 329
Likes: 1
From: Oldsmar, FL
One other thing I forgot to mention is that I need all this to be RELIABLE when it's done. Most of the miles on this bike have come from me riding it the past 4 years, and I've been able to do so (knock on wood) with just regular maintenance. This bike has never failed to start or get me from point A to point B, whether it's 5 miles or 2000 miles.
Outstanding HDF Member
Joined: Apr 2008
Posts: 3,140
Likes: 17
From: Wisconsin
Call or e-mail Fuel Moto and discuss it with them, they won't steer you wrong. I have their 107" kit, 555 cams, 2-1-2 head pipe, Jackpot mufflers, FM airfilter and DynoVision tuner, stock heads. I plan on doing the heads this fall with a ported and polished throttle body. Currently at 122 ft lbs of torque and yep, you want to hang on .......... I can only imagine what the headwork will get me.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
A well built 95"-98" will get you right there. Going any bigger than that will necessitate full tear down of your engine. If you are going to fully tear the engine down then you can go over 100" with a stroker crank and/or cylinders that require boring of the cases so they will fit.
Outstanding HDF Member
Joined: Apr 2008
Posts: 3,140
Likes: 17
From: Wisconsin
Damn! I need to pay closer attention, you're starting with an 88"er. Yep, seen a lot of well built 95" motors turn 100HP. First one I saw at our dealership was a RK and I watched him pull the front wheel going through the parking lot. Hard to beleive I used to think an 80" shovelhead was the trick, then went to 86", then on to the twin cams at 96", then 103", now 107", OMG, when will it stop? Oh yeah, there is the 120R hanging out there like a freaking carrot to a bunny!
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
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From: Phoenix '53, '88, '09 Big Twins
One other thing I forgot to mention is that I need all this to be RELIABLE when it's done. Most of the miles on this bike have come from me riding it the past 4 years, and I've been able to do so (knock on wood) with just regular maintenance. This bike has never failed to start or get me from point A to point B, whether it's 5 miles or 2000 miles.
How Fast
How Much
How Long
You pick two
So it's the balance of power/cost and reliability
You could make your bike into a money pit, cause next it's the primary drive, clutch, tranny and swingarm need upgraded.
maybe brakes too to a newer style multi piston.
suspension upgrades, wider tire, maybe a chain conversion.
* and like the rider below- the starter can't start the bike
These are many of the things which i have watched pals go through. one of my Pals dumped over 30K in "performance work" to his 2001 Road King--- which sold for under 10K when he lost his job. ( so a net loss of about $38,000 )
It was just not a friendly streetable machine anymore--- and although showed well over 100/100 at 1200' elevation, was left behind by my evo bagger in the mountains.
His carb/ignition tuning and compression/headwork was so finicky that air density conditions outside of it's "range" resulted in a poor running bike.
I've seen this over and over, buy a Harley dump money into it, loose mpg and reliability and dump it on the market.
My suggestion for guys who want to go fast is to dump that money into a lighter bike- an evo FXR is suited for high speed, they handle great and the 80" evo can reliably make 75-80 HP. My Fxrp is under 400 pounds and'll do 135 no problem, and be stable at speeds over 100 mph.
For the money you would put into your 99, you could buy an FXR or Ducati Monster or a sportbike.
my 2˘, take it for what it's worth.
Mike
Last edited by mkguitar; Mar 29, 2012 at 12:44 PM.
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Road Master
Joined: Sep 2009
Posts: 1,169
Likes: 9
From: Southern Illinois
I just did a 97" BB on my 01 Magnetti-Morreli injected 01 Ultra. Had heads street-ported and 1.92 intake, 1.64 exhaust valves with combustion chambers cut to 85cc's, a Woods TW-5G cam set installled with Woods Directional lifters. Bike is just now getting seated in (lost starter this weekend, even with the compression releases i had cut in) and 2-up this thing pulls hard and the mileage is still in the mid forty's.
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Road Captain
Joined: Apr 2010
Posts: 513
Likes: 3
From: Charlottetown, Prince Edward Island
If you want good reliable power, get your cyclinders bored to 95", get a good set of pistons that keep your compression in the 10:1 range, couple this with a good set of cams (Andrews, Woods, SE's, etc...) air cleaner,and a decent exhaust with a good tune/tuner and then leave it alone.
If you want best bang for your buck - do not go any further and let your seat of the pants dyno decide if you're happy rather than chasing numbers. If you like your stocker now if you do the above upgrades for I'd say 2K max you'll have the biggest smile on your face you ever had and also have a good reliable easy starting bike for lots more miles.
This should put you in the mid 90's by the way - but you start chasing those last 15-20hp getting into headwork, case boring, crank, lifters, throttle body, clutch - believe me have your wallet ready!!
If you want best bang for your buck - do not go any further and let your seat of the pants dyno decide if you're happy rather than chasing numbers. If you like your stocker now if you do the above upgrades for I'd say 2K max you'll have the biggest smile on your face you ever had and also have a good reliable easy starting bike for lots more miles.
This should put you in the mid 90's by the way - but you start chasing those last 15-20hp getting into headwork, case boring, crank, lifters, throttle body, clutch - believe me have your wallet ready!!
