New Engine Options
Thread Starter
|
Road Master
Joined: Oct 2007
Posts: 927
Likes: 56
From: Memphis, TN via NoVA
New Engine Options
2015 CVO Street Glide, 113" Fuel Moto big bore kit, CNC ported heads, 58mm TB w/ 5.3 injectors, 132TQ/129HP, Rekluse Apex clutch and basket. I want more...something in the 140TQ/HP range. Looking for input on the following, not looking for the Why questions.
Assuming a budget of 12K, what options are out there to do a new drop-in engine? I would not necessarily want to heavily modify the existing engine unless that is the only option given the fact it is a wet head. Looking forward to seeing the replies.
Assuming a budget of 12K, what options are out there to do a new drop-in engine? I would not necessarily want to heavily modify the existing engine unless that is the only option given the fact it is a wet head. Looking forward to seeing the replies.
Club Member
Joined: Apr 2016
Posts: 11,652
Likes: 8,464
From: Inland NW
Banned
Joined: May 2025
Posts: 148
Likes: 60
From: United States
A new S&S 135" or 143" crate engine is your best bet. They are complete, tested, and a direct drop-in for your frame. This will easily hit your 140+ goal without touching your current wet head motor.
For a built option, a 128" build from a top shop like Darkhorse Crankworks or HPI, using your existing cases, would also get you there. But the crate motor is the simplest solution.
For a built option, a 128" build from a top shop like Darkhorse Crankworks or HPI, using your existing cases, would also get you there. But the crate motor is the simplest solution.
Club Member
Joined: Apr 2016
Posts: 11,652
Likes: 8,464
From: Inland NW
135? Did your little AI helper let you down tonight, or what? You are blasting through these thread replies literally every 2 minutes with AI, and sometimes it is just not correct.
Thread Starter
|
Road Master
Joined: Oct 2007
Posts: 927
Likes: 56
From: Memphis, TN via NoVA
Fuel Moto 124 https://www.fuelmotousa.com/i-238972...%7Cyear%3D2016
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,076
Likes: 1,008
https://suzukicycles.com/sportbike/2025/hayabusa
get something that is designed to run. remember the more you want to go with hd, the more undependable they become. that is IF you are planning to use it short of sunday school bragging rights.
if you just want to occasionally street hop, nitrous, even then caution is needed, then there is a boosted system.
old saying just because you are big, even a big man falls hard, so lesser machines will show you their tail lights.
get something that is designed to run. remember the more you want to go with hd, the more undependable they become. that is IF you are planning to use it short of sunday school bragging rights.
if you just want to occasionally street hop, nitrous, even then caution is needed, then there is a boosted system.
old saying just because you are big, even a big man falls hard, so lesser machines will show you their tail lights.
Thread Starter
|
Road Master
Joined: Oct 2007
Posts: 927
Likes: 56
From: Memphis, TN via NoVA
https://suzukicycles.com/sportbike/2025/hayabusa
get something that is designed to run. remember the more you want to go with hd, the more undependable they become. that is IF you are planning to use it short of sunday school bragging rights.
if you just want to occasionally street hop, nitrous, even then caution is needed, then there is a boosted system.
old saying just because you are big, even a big man falls hard, so lesser machines will show you their tail lights.
get something that is designed to run. remember the more you want to go with hd, the more undependable they become. that is IF you are planning to use it short of sunday school bragging rights.
if you just want to occasionally street hop, nitrous, even then caution is needed, then there is a boosted system.
old saying just because you are big, even a big man falls hard, so lesser machines will show you their tail lights.
Trending Topics
Thread Starter
|
Road Master
Joined: Oct 2007
Posts: 927
Likes: 56
From: Memphis, TN via NoVA
A new S&S 135" or 143" crate engine is your best bet. They are complete, tested, and a direct drop-in for your frame. This will easily hit your 140+ goal without touching your current wet head motor.
For a built option, a 128" build from a top shop like Darkhorse Crankworks or HPI, using your existing cases, would also get you there. But the crate motor is the simplest solution.
For a built option, a 128" build from a top shop like Darkhorse Crankworks or HPI, using your existing cases, would also get you there. But the crate motor is the simplest solution.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Jason Momoa Is Turning Classic Harleys Into PHEVs
Verdad Gallardo
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,076
Likes: 1,008
hardie har har
even a sportster will pass you.
i take it that you are a sunday school rider.
will your machine take 7.5k running near 160mph? and that is not with the 140 range you are wanting, way less.
will your machine take on rice at the top, it sure will not on the low, probably have 750cc machines dancing around you. i bet the widow maker will give you a good run till she tops out.
i had a 305 super hawk keep up with a 750-4 within a 1.2 bike length till she topped out, problem is i could only get 3 good runs before the rings shattered and had to tear down to repair. i even developed a way to pull the head with the engine in frame.
bad thing here is at 140 you feel every rock in the road and you are soooo lite seems like riding on marsh-mellows. the hd frame is not designed for that and i have adjustable suspension.
dyno bragging sheet are just that bragging, seen tooooo many shade trees tear up that piece of paper, a dyno is a tool, a predictor NOT gospel. those number are for THAT moment in time, change one thing and the numbers are gone!
true story: i followed aj foyt since i am a texan but one day at the track, he showed up in a chevy station wagon, not intending to run, everyone there was running for sport and sheet bragging. well everyone pressure him so he got on the track and TORE everyone up, and at this moment in time, he was shade tree, later he did use dynos. well they all got together and cried fowl so he let them load sacks of redy mix in the back of the wagon, been tooooo long but probably 500 pounds worth. well?????
he smoke them WORST than before!!!!! little did they know that the extra weight made tha wagon hook up faster, needless to say that bunch NEVER questioned him again!!!
even a sportster will pass you.
i take it that you are a sunday school rider.
will your machine take 7.5k running near 160mph? and that is not with the 140 range you are wanting, way less.
will your machine take on rice at the top, it sure will not on the low, probably have 750cc machines dancing around you. i bet the widow maker will give you a good run till she tops out.
i had a 305 super hawk keep up with a 750-4 within a 1.2 bike length till she topped out, problem is i could only get 3 good runs before the rings shattered and had to tear down to repair. i even developed a way to pull the head with the engine in frame.
bad thing here is at 140 you feel every rock in the road and you are soooo lite seems like riding on marsh-mellows. the hd frame is not designed for that and i have adjustable suspension.
dyno bragging sheet are just that bragging, seen tooooo many shade trees tear up that piece of paper, a dyno is a tool, a predictor NOT gospel. those number are for THAT moment in time, change one thing and the numbers are gone!
true story: i followed aj foyt since i am a texan but one day at the track, he showed up in a chevy station wagon, not intending to run, everyone there was running for sport and sheet bragging. well everyone pressure him so he got on the track and TORE everyone up, and at this moment in time, he was shade tree, later he did use dynos. well they all got together and cried fowl so he let them load sacks of redy mix in the back of the wagon, been tooooo long but probably 500 pounds worth. well?????
he smoke them WORST than before!!!!! little did they know that the extra weight made tha wagon hook up faster, needless to say that bunch NEVER questioned him again!!!
Thread Starter
|
Road Master
Joined: Oct 2007
Posts: 927
Likes: 56
From: Memphis, TN via NoVA
hardie har har
even a sportster will pass you.
i take it that you are a sunday school rider.
will your machine take 7.5k running near 160mph? and that is not with the 140 range you are wanting, way less.
will your machine take on rice at the top, it sure will not on the low, probably have 750cc machines dancing around you. i bet the widow maker will give you a good run till she tops out.
i had a 305 super hawk keep up with a 750-4 within a 1.2 bike length till she topped out, problem is i could only get 3 good runs before the rings shattered and had to tear down to repair. i even developed a way to pull the head with the engine in frame.
bad thing here is at 140 you feel every rock in the road and you are soooo lite seems like riding on marsh-mellows. the hd frame is not designed for that and i have adjustable suspension.
dyno bragging sheet are just that bragging, seen tooooo many shade trees tear up that piece of paper, a dyno is a tool, a predictor NOT gospel. those number are for THAT moment in time, change one thing and the numbers are gone!
true story: i followed aj foyt since i am a texan but one day at the track, he showed up in a chevy station wagon, not intending to run, everyone there was running for sport and sheet bragging. well everyone pressure him so he got on the track and TORE everyone up, and at this moment in time, he was shade tree, later he did use dynos. well they all got together and cried fowl so he let them load sacks of redy mix in the back of the wagon, been tooooo long but probably 500 pounds worth. well?????
he smoke them WORST than before!!!!! little did they know that the extra weight made tha wagon hook up faster, needless to say that bunch NEVER questioned him again!!!
even a sportster will pass you.
i take it that you are a sunday school rider.
will your machine take 7.5k running near 160mph? and that is not with the 140 range you are wanting, way less.
will your machine take on rice at the top, it sure will not on the low, probably have 750cc machines dancing around you. i bet the widow maker will give you a good run till she tops out.
i had a 305 super hawk keep up with a 750-4 within a 1.2 bike length till she topped out, problem is i could only get 3 good runs before the rings shattered and had to tear down to repair. i even developed a way to pull the head with the engine in frame.
bad thing here is at 140 you feel every rock in the road and you are soooo lite seems like riding on marsh-mellows. the hd frame is not designed for that and i have adjustable suspension.
dyno bragging sheet are just that bragging, seen tooooo many shade trees tear up that piece of paper, a dyno is a tool, a predictor NOT gospel. those number are for THAT moment in time, change one thing and the numbers are gone!
true story: i followed aj foyt since i am a texan but one day at the track, he showed up in a chevy station wagon, not intending to run, everyone there was running for sport and sheet bragging. well everyone pressure him so he got on the track and TORE everyone up, and at this moment in time, he was shade tree, later he did use dynos. well they all got together and cried fowl so he let them load sacks of redy mix in the back of the wagon, been tooooo long but probably 500 pounds worth. well?????
he smoke them WORST than before!!!!! little did they know that the extra weight made tha wagon hook up faster, needless to say that bunch NEVER questioned him again!!!