I want more torque from my 103 stage 2 engine 2013 flhx

[Ratman1640]

Hey guys the wife and I just got back from Colorado springs , we live in southeast KS, with 35mph head wind and fully load down and at 80mph in 6th gear I had nothing left in the throttle so I'm thinking more torque maybe a big bore kit but I just want to change pistons and cylinders. The bike is a 2013 flhx with 57h cams, high flow A/C, fulsac pipes with high output V/H muffles , tts master tuner. Dyno was 112 tq and 92 hp , I'm 206 lbs. and the wife is let just say is small under 112lbs but the Kansas winds are rough sometime and I'm wanting to be able to twist the wick and go NOW !! I still want to keep it dependable so keeping the stock C/R would be nice. Thanks for any input guys !

[Admiral Akbar]

Gear it down or use 5th...

[Ratman1640]

Gottcha there Max but even in 5th loaded down and passing its still doesn't pull that hard, its fine when I'm by myself and roles good it just the head wind and loaded down that really slows the bike down.

[PoorUB]

Something is not right. I ride a 2010 Ultra with a 103", Andrews 57, Fuelmoto Jackpot head pipe and pull a small trailer. Even when it was a 96" with Andrews 48's I still had plenty to go even fighting a strong head wind.
I weigh about 200 and my wife about 100 so we are similar there.

Really you are about as far as you can go without raising compression or added more cubic inches.as for adding cubic inches go can go to a 107" without major engine work, but any farther is going to mean pulling the engine to machine the cases.

Raise the compression slightly and port the heads will get you a few horsepower too.

[clawdog60]

143"

[TorQuePimp]

Hey guys the wife and I just got back from Colorado springs , we live in southeast KS, with 35mph head wind and fully load down and at 80mph in 6th gear I had nothing left in the throttle so I'm thinking more torque maybe a big bore kit but I just want to change pistons and cylinders. The bike is a 2013 flhx with 57h cams, high flow A/C, fulsac pipes with high output V/H muffles , tts master tuner. Dyno was 112 tq and 92 hp , I'm 206 lbs. and the wife is let just say is small under 112lbs but the Kansas winds are rough sometime and I'm wanting to be able to twist the wick and go NOW !! I still want to keep it dependable so keeping the stock C/R would be nice. Thanks for any input guys !

  You don't need BIGGER you need to make the best of what you have

  Blueprint the stock pistons = zero deck the stock pistons

  MILD headwork including new intake valves.....if on a budget the exhausts are fine

  deck the heads to balance/equalize the compression

  spiff up the throttle body to get a little closer to a port match

  I would suggest another cam.....but the 57 is OK

  wont be a dyno queen but you should be able to pick up noticeable HP/TQ thruout the RPM range and you will find yourself riding the bike a bit different

  couple of recent examples in the dyno section....one includes a 57

[gonenorth]

  I ride a 2012 Limited with Andrews 48s, S&S Stealth air filter, V&H Power Duals and TTS Tuner.   All the  rest is stock.  In ND we regularly fight strong winds and I have no problem loaded and 2 up with pulling grades at 80 into a strong (30 to 40 MPH) wind in 6th and having throttle left.  I had the same issue when stock, but the cams, air flow and tuner fixed it.  Is the air filter clean?  I am wondering if air flow is restricted.

[Ratman1640]

gonenorth, ive checked the air cleaner and its clean, I guess what im looking for is a really strong motor with high torque, the motor runs great for most ppl but im just wanting more torque and im thinking more cid well fix that but don't know exactly how to go about it. I know raising the C/R and opening the heads up will do it but like the old 396 big block will pull like no other that's why im leaning that way . thanks Mike

[Ohio HD]

You may as well get it over with and jump in with both feet. An S&S 124 low compression will make for a very nice motor for two up touring. Can run it on less than optimum gas, and is made of all the best components you would want. You could sell your motor if you wanted in order to recover some of the cost.


T124LC   

http://www.sscycle.com/product/2007-Up-Twin-Cam-96-103-110-/Engines/T2-T-Series-Long-Block-Engines-for-2007-Up-Models-p25589.html

or

http://goo.gl/gCd0rP

[Don D]

Change your gearing first.

[Ohio HD]

Don, that makes them pull better for sure. But look at his reply #7. He wants more power, big block Chevy as his analogy.

He wants a 124.   

[Don D]

OK
I get that but the gearing and making 6th more usable at cruising speeds may make the difference. From there mild porting and getting the compression in a better spot for the cam is an incremental change than is worth about 8hp 5tq and added torque all the way from idle up.
If the problem warrants spending 6K or so for a 124" then by all means go for it.

[Ratman1640]

I was thinking of just changing out the pistons and the cylinders for more torque or am im thinking wrong ? 

[Ratman1640]

ok let me ask this question .... How can I get more torque out of what I have ?

[Ohio HD]

Problem is, you can't swap out to any cylinder that will increase your cubic inches past a 107, without pulling the motor apart and boring the cases for larger cylinders. By the time you do all that, basically rebuild the motor, then you should go to 117 inches with 4.125" cylinders. I just don't trust the factory cranks if you're going to try to put some real power to the ground.

[Ratman1640]

Thank you Ohio HD , my next question is what kinda torque would I end up with, Ballpark?

[Ohio HD]

Here's an example of a really nice street friendly 117 inch.
You can get more from yours, but being a smaller motor, it gets harder to get it from it.

http://harleytechtalk.com/htt/index.php/topic,81598.msg912513.html#msg912513

[TorQuePimp]

I was thinking of just changing out the pistons and the cylinders for more torque or am im thinking wrong ?

  Adding cubic inches to an already underheaded engine is not the answer

  Being a non 107-117 fan

  this looks like a touring engine to me

http://harleytechtalk.com/htt/index.php/topic,80743.0.html

[Matt C]

  Adding cubic inches to an already underheaded engine is not the answer

  Being a non 107-117 fan

Good to know you're not a '107 pimp' there John. lol

[fxstdavew]

Re-gear it first. It's the most bang for the buck. Pistons arent going to do what you want.

[Matt C]

Re-gear it first. It's the most bang for the buck. Pistons arent going to do what you want.

Right on. (Especially without better heads)

[Ratman1640]

thanks guys !!! Ohio the numbers on that that dyno are a little more than what im looking for but I got to say I so would live with that lol . so Im looking at 2 grand to get what im looking at?

[sfmichael]

You may as well get it over with and jump in with both feet. An S&S 124 low compression will make for a very nice motor for two up touring. Can run it on less than optimum gas, and is made of all the best components you would want. You could sell your motor if you wanted in order to recover some of the cost.


T124LC   

http://www.sscycle.com/product/2007-Up-Twin-Cam-96-103-110-/Engines/T2-T-Series-Long-Block-Engines-for-2007-Up-Models-p25589.html

or

http://goo.gl/gCd0rP

that 113 John posted looks awesome but that wouldn't be cheap either...

buy the 124 (with a warranty) and sell your old motor

[TorQuePimp]

You may as well get it over with and jump in with both feet. An S&S 124 low compression will make for a very nice motor for two up touring. Can run it on less than optimum gas, and is made of all the best components you would want. You could sell your motor if you wanted in order to recover some of the cost.


T124LC   

http://www.sscycle.com/product/2007-Up-Twin-Cam-96-103-110-/Engines/T2-T-Series-Long-Block-Engines-for-2007-Up-Models-p25589.html

or

http://goo.gl/gCd0rP

that 113 John posted looks awesome but that wouldn't be cheap either...

buy the 124 (with a warranty) and sell your old motor

  A little more than half the cost of a S&S 124

  not including labor

  Its not  just the engine involved in doing a 124 that up the costs ALOT

  Clutch,throttle body &probably exhaust system.....have to dick around with drilling for the oiling system

  Having built a few ...im doing one for my own bike

[hrdtail78]

ok let me ask this question .... How can I get more torque out of what I have ?

Up your compression.  Pay more attention to corrected compression.  9.5 is my limit on the street.  I can't see why 120-125tq wouldn't be achievable with a 103/ 57 combination.  Pistons might get you there, and shaving might still be required.  While you are this for.  Any more money you put into headwork/ TB will only help with squaring up the HP to TQ.