My 2011 CVO Road Glide with 20,000 miles on it has a stage 1 using Fullsac CX pipe and 2" baffles with a TTS tuner, Stock ventilator A/C. Can a 113 kit be added to this bike using the stock 50mm TB, crank, heads and my stage 1 stuff? Should any stuff be updated along with the 113"? Ant recommendation on which 113" kit or parts to use? What type increase could I expect?
I want to swap out the lifters anyway so might as well add a bit of torque as well. Thanks. HMT

 

A 3 cubic inch increase is going to net you around 2 hp and 3 lb/ft of torque, not something you're likely to notice. With that said, I believe you can simply bore your cylinders 0.060" with new pistons and rings and you'd be good to go with no other changes. I believe there are also "drop in" 113"kits available that require no other changes or upgrades.

Consider a cam upgrade while you're at it. A woods 555, Andrews 57H, or Cycle Rama 575 at 10.0-10.25:1 compression would give you a far bigger bang for the buck than the actual cubic in increase will, by far. Good luck with whatever route you decide to go.

 

J&E, and Mahle, both manufacture pistons to allow the boring of those cyls to 113", and we've used both.
Either work well.
That said, with the addition of a cam, mild head mods, and a 58mm t/body(you currently have a mis-match from port to manifold)you can have a stout, reliable, powerplant.
Boring the cases will allow a 117", using your crankshaft.
Scott

 

boring .060 will ensure a fresh,straight bore and yield 113",but I agree with adding compression & a cam set if you really want to feel improvments

 

I had a 113" done a ways back by getting my stock cylinders bored. From there, I had WFO Larry head work, 58mm TB, cycle-rama 575 cams, KB pistons, Fullsac/Crusher exhaust, and lower end reinforcement including the crank. Made 120/125 at around 10.2 compression. Very fun build with instant torque. The 113" is a nice platform.

The best advice I can offer.........Wait until you can do everything. I've done my bike in stages and though it's fun, a lot of unnecessary time and money was spent to get up to my 117" now (and I'm already thinking 124"). I wish someone would have yelled at me, and told me to just do a 124" initially and get it over with.

With the right combo of parts, you can have a dependable 113" 125+/125+ touring bike, no problem. I guarantee if you do a few things to gain 10 horsepower, you'll get bored soon and wish you would have waited and really juiced it up.

Good luck!

 

A 113" can easily be at 130/130.
Our web site has dyno evidence of one of the multitudes of S&S carbed 113" engines we performed our modifications to, and tuned in house......over 20 years ago.......130/140......long before these message boards, long before EFI.
Our company Facebook has a carbed 98", posted yesterday, that went 107/116 in extremely tame form.
Not made in China.
Scott

 

Oh I don't doubt it. I was a little conservative with my numbers Hell, anymore those numbers from a 107" don't surprise me. Seems like some of the better builders/tuners have really dialed these things in. Sometimes even at very reasonable compression.

 

your bike is my favorite cvo of all time

 

You can get the Mahle piston from Suburban Harley in Thiensville WI, great pistons. No problem boring the 60 over. I would strongly urge you to do a 58mm throttle body as well, S&S throttle hog can be had for a great price and if you still have the stock A/C you can get the bigger backing plate from Harley. At the very least give the heads some attention while they are off. At the very LEAST a good valve job and seals, then match a cam to the compression and your riding style. You have a great exhaust and should be able to make some real power without breaking the bank. Tuned an 11 cvo Roadglide yesterday with cam/pipe upgrade, real nice bike. Gray

 

Another option may be to bore the stock plate if there is room. I had that done to my Agitator back plate for 30 bucks.