107 vs 110 kit
Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
Thank you. Heads with 2 into 1 exhaust or can true duals achachieve it?
Intermediate
Joined: Sep 2017
Posts: 42
Likes: 7
From: Tennessee
Miketv84,
After money spent and more money spent, listen to ProDrag or Scott at Hillside and get your heads done. You're looking at 20+% more power within your price range. Don't do what I did in the beginning of my build and try to go with cookie cutter components. Goto a builder and get the best for the money you want to spend. Also look at Head Hoggers. With 585 cams, I've seen 130hp/tq from a 107" build when tuned right.
As for as your exhaust, a 2-n-1 may give you more power on the dyne, but if you're like me and simply like the true duals, it's worth the couple HP cost for the True Duals. Just my opinion. Keep us posted.
After money spent and more money spent, listen to ProDrag or Scott at Hillside and get your heads done. You're looking at 20+% more power within your price range. Don't do what I did in the beginning of my build and try to go with cookie cutter components. Goto a builder and get the best for the money you want to spend. Also look at Head Hoggers. With 585 cams, I've seen 130hp/tq from a 107" build when tuned right.
As for as your exhaust, a 2-n-1 may give you more power on the dyne, but if you're like me and simply like the true duals, it's worth the couple HP cost for the True Duals. Just my opinion. Keep us posted.
Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
Miketv84,
After money spent and more money spent, listen to ProDrag or Scott at Hillside and get your heads done. You're looking at 20+% more power within your price range. Don't do what I did in the beginning of my build and try to go with cookie cutter components. Goto a builder and get the best for the money you want to spend. Also look at Head Hoggers. With 585 cams, I've seen 130hp/tq from a 107" build when tuned right.
As for as your exhaust, a 2-n-1 may give you more power on the dyne, but if you're like me and simply like the true duals, it's worth the couple HP cost for the True Duals. Just my opinion. Keep us posted.
After money spent and more money spent, listen to ProDrag or Scott at Hillside and get your heads done. You're looking at 20+% more power within your price range. Don't do what I did in the beginning of my build and try to go with cookie cutter components. Goto a builder and get the best for the money you want to spend. Also look at Head Hoggers. With 585 cams, I've seen 130hp/tq from a 107" build when tuned right.
As for as your exhaust, a 2-n-1 may give you more power on the dyne, but if you're like me and simply like the true duals, it's worth the couple HP cost for the True Duals. Just my opinion. Keep us posted.
Thank you. I had talked to Scott at Hillside and he did bring up crank issues when pushing that much power on the older Harley's 02-07. So I can see the possibility of this turning into even more of a money issue.
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
You really don't say what I of riding you do and what you're looking for but I assume quick as in acceleration quick. So I'm going to throw this out there since I know no one else here will and it's way too overlooked.
The name of the game is power to the rear wheel. That's the rush we're all chasing. Building the motor is only one way to improve this. The other is changing the gearing that's way too tall for anything but highway cruising. It takes an awful lot of horsepower/torque from the engine to make up for gearing that's too tall.
Your cams aren't the greatest for off the line acceleration or peak torque. But with the right gearing, they would work great.
There's more than one way to change the gearing too. Primary or final.
For a fraction of the cost, you'd be surprised what the right gearing would do for an engine with mediocre power.
There's some way bigger engine builds here that would struggle to keep up with the quickness of a properly geared bike with less hp/torque from the engine.
Leave the 103(unless it's tired), do some headwork, change the gearing, and you'll have one of the quickest bikes light to light and in the twisties that thousands of dollars in engine work will struggle to keep up with.
Anyone who races will tell you gearing is everything. I've contemplated the same things you are and the gearing change was the best thing I could've done.
Just my
The name of the game is power to the rear wheel. That's the rush we're all chasing. Building the motor is only one way to improve this. The other is changing the gearing that's way too tall for anything but highway cruising. It takes an awful lot of horsepower/torque from the engine to make up for gearing that's too tall.
Your cams aren't the greatest for off the line acceleration or peak torque. But with the right gearing, they would work great.
There's more than one way to change the gearing too. Primary or final.
For a fraction of the cost, you'd be surprised what the right gearing would do for an engine with mediocre power.
There's some way bigger engine builds here that would struggle to keep up with the quickness of a properly geared bike with less hp/torque from the engine.
Leave the 103(unless it's tired), do some headwork, change the gearing, and you'll have one of the quickest bikes light to light and in the twisties that thousands of dollars in engine work will struggle to keep up with.
Anyone who races will tell you gearing is everything. I've contemplated the same things you are and the gearing change was the best thing I could've done.
Just my
Last edited by 60Gunner; Jun 15, 2021 at 10:11 AM.
Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
You really don't say what I of riding you do and what you're looking for but I assume quick as in acceleration quick. So I'm going to throw this out there since I know no one else here will and it's way too overlooked.
The name of the game is power to the rear wheel. That's the rush we're all chasing. Building the motor is only one way to improve this. The other is changing the gearing that's way too tall for anything but highway cruising. It takes an awful lot of horsepower/torque from the engine to make up for gearing that's too tall.
Your cams aren't the greatest for off the line acceleration or peak torque. But with the right gearing, they would work great.
There's more than one way to change the gearing too. Primary or final.
For a fraction of the cost, you'd be surprised what the right gearing would do for an engine with mediocre power.
There's some way bigger engine builds here that would struggle to keep up with the quickness of a properly geared bike with less hp/torque from the engine.
Leave the 103(unless it's tired), do some headwork, change the gearing, and you'll have one of the quickest bikes light to light and in the twisties that thousands of dollars in engine work will struggle to keep up with.
Anyone who races will tell you gearing is everything. I've contemplated the same things you are and the gearing change was the best thing I could've done.
Just my
The name of the game is power to the rear wheel. That's the rush we're all chasing. Building the motor is only one way to improve this. The other is changing the gearing that's way too tall for anything but highway cruising. It takes an awful lot of horsepower/torque from the engine to make up for gearing that's too tall.
Your cams aren't the greatest for off the line acceleration or peak torque. But with the right gearing, they would work great.
There's more than one way to change the gearing too. Primary or final.
For a fraction of the cost, you'd be surprised what the right gearing would do for an engine with mediocre power.
There's some way bigger engine builds here that would struggle to keep up with the quickness of a properly geared bike with less hp/torque from the engine.
Leave the 103(unless it's tired), do some headwork, change the gearing, and you'll have one of the quickest bikes light to light and in the twisties that thousands of dollars in engine work will struggle to keep up with.
Anyone who races will tell you gearing is everything. I've contemplated the same things you are and the gearing change was the best thing I could've done.
Just my
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
Much appreciated. I do like to go fast but I don't beat the ***** out of my machine. I'm a motor officer and leave that for the work wheel which is a 2020 RK police lol. When you say gearing, what are you actually changing or altering? Never really thought of that before but it makes perfect sense. Same way you change the rear diff in a muscle car. I took a ride out to PA today to check out a 17 Road King with a 124 build. Very nice motorcycle but we were never going to agree on a trade in price for mine. I'm already at the point where other than selling privately I will get the argument of it's a 2007, even with all of the custom work will never get what I'm asking. At what point do I say **** it, buy newer and start over.
I am not going to engage 60Gunner in a gearing discussion; been there, done that. Gearing for certain situations certainly makes sense; gearing for Bonneville is very different from gearing for the drag strip, so gearing has it's place. Having said that, you add couple of teeth to your trans sprocket with you current power of 100/105 and line up against the same bike pulling 115/120 numbers and you lose. You might jump out in front but the more powerful motor will reel you in and run right by you.
If you like your bike and have the funds to build the motor, talk to Scott/Hillside or Kirby/VeeTwin about building the motor. You can build a 124" motor on your cases cheaper than buying a new bike; no brainer IMHO.
Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
Sounds to me like you are there; time to fish or cut bait.
I am not going to engage 60Gunner in a gearing discussion; been there, done that. Gearing for certain situations certainly makes sense; gearing for Bonneville is very different from gearing for the drag strip, so gearing has it's place. Having said that, you add couple of teeth to your trans sprocket with you current power of 100/105 and line up against the same bike pulling 115/120 numbers and you lose. You might jump out in front but the more powerful motor will reel you in and run right by you. If you like your bike and have the funds to build the motor, talk to Scott/Hillside or Kirby/VeeTwin about building the motor. You can build a 124" motor on your cases cheaper than buying a new bike; no brainer IMHO.
I am not going to engage 60Gunner in a gearing discussion; been there, done that. Gearing for certain situations certainly makes sense; gearing for Bonneville is very different from gearing for the drag strip, so gearing has it's place. Having said that, you add couple of teeth to your trans sprocket with you current power of 100/105 and line up against the same bike pulling 115/120 numbers and you lose. You might jump out in front but the more powerful motor will reel you in and run right by you.
If you like your bike and have the funds to build the motor, talk to Scott/Hillside or Kirby/VeeTwin about building the motor. You can build a 124" motor on your cases cheaper than buying a new bike; no brainer IMHO.HD Forum Stories
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Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
Sounds to me like you are there; time to fish or cut bait.
I am not going to engage 60Gunner in a gearing discussion; been there, done that. Gearing for certain situations certainly makes sense; gearing for Bonneville is very different from gearing for the drag strip, so gearing has it's place. Having said that, you add couple of teeth to your trans sprocket with you current power of 100/105 and line up against the same bike pulling 115/120 numbers and you lose. You might jump out in front but the more powerful motor will reel you in and run right by you. If you like your bike and have the funds to build the motor, talk to Scott/Hillside or Kirby/VeeTwin about building the motor. You can build a 124" motor on your cases cheaper than buying a new bike; no brainer IMHO.
I am not going to engage 60Gunner in a gearing discussion; been there, done that. Gearing for certain situations certainly makes sense; gearing for Bonneville is very different from gearing for the drag strip, so gearing has it's place. Having said that, you add couple of teeth to your trans sprocket with you current power of 100/105 and line up against the same bike pulling 115/120 numbers and you lose. You might jump out in front but the more powerful motor will reel you in and run right by you.
If you like your bike and have the funds to build the motor, talk to Scott/Hillside or Kirby/VeeTwin about building the motor. You can build a 124" motor on your cases cheaper than buying a new bike; no brainer IMHO.See and here's something that just pisses me off. I reached out to another builder that isn't far from me with the same question, 107 or 110 or something else. He says.....a 110 kit would require machining the crank and in that case recommends a crate motor. Wtf. Who the **** can you trust now a days. Everyone has something different to say !