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Old Sep 4, 2025 | 06:26 PM
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Default 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.
 
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Old Sep 4, 2025 | 06:38 PM
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Fuel Moto 124 https://www.fuelmotousa.com/i-238972...%7Cyear%3D2016
 
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Old Sep 4, 2025 | 08:46 PM
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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.
 
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Old Sep 4, 2025 | 10:57 PM
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Originally Posted by Roberto88
A new S&S 135" or 143" crate engine is your best bet.
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.
 
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Old Sep 5, 2025 | 06:03 AM
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Originally Posted by NorthWestern
Follow up question for you: Am I correct in assuming that an ECM change will be necessary given that the stock ECM is set up for a Wethead? There's a significant amount of engine codes associated with the wethead (coolant temp, coolant pump failure etc...) that I would think could drive the need for a different ECM.
 
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Old Sep 5, 2025 | 06:15 AM
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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.
 
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Old Sep 5, 2025 | 06:28 AM
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Originally Posted by bustert
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.
Appreciate your feedback but just a thought for you to consider: If I wanted a rice burner replacement, don't you think I would have posted to one of those forums, not a HD forum? I want to keep the look, style, and feel of my CVO, not a rice burner equivalent. And I disagree wholeheartedly with your "remember the more you want to go with hd, the more undependable they become." statement. I still have my '07 FXDC, which started out as a 96" and is now a 107" with over 110k miles (45K on the 96/65K on the 107) and that bitch be a tire shredding runner extraordinaire!
 
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Old Sep 5, 2025 | 06:32 AM
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Originally Posted by Roberto88
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.
S&S doesn't have a 135" option available. Where did you source your info? Their website shows 143/124/111 as options.
 
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Old Sep 5, 2025 | 07:54 AM
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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!!!
 
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Old Sep 5, 2025 | 08:59 AM
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Originally Posted by bustert
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!!!
Of what value is this and your other comment to the original thread provided? Thanks for wasting my time reading your **** posts! Even though you may have some validity to any of your posts on this or any other thread, your inability to stay on topic will preclude me from reading anything you ever post in the future! Thanks!
 
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