Cam, Big Bore or other ideas? - Road Glide Forums
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View Poll Results: Cam or Big Bore kit
Upgrade Cam 15 65.22%
Upgrade to 120" Big Bore 8 34.78%
Voters: 23. You may not vote on this poll

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post #1 of 29 (permalink) Old 08-22-2018, 04:50 PM Thread Starter
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Cam, Big Bore or other ideas?

Talking with my better half, I've been given the green light to do some work over the winter while the bike sits. I've been pouring over all the numbers and data and posts that I can find and I am just lost in all the numbers at this point. Here is where I am at:

1. Upgrade cam to Woods 222 or 777 cam with lifters & pushrods ($650 + labor) *estimated 115HP and 115 tq*

2. Upgrade engine to 120" motor with cam, clutch, springs, lifters, pushrods, injectors etc. ($2600 + labor) *estimated 125hp and 130 tq*

What I am looking for is a boost.... not some radical, need a seat belt to hold on boost, but a "put a big smile on my face" boost. I do a little 2-up riding and I'd like to still have plenty of ump when my better half wants to go out with me as well. My overall goal is to have a fun bike with some extra giddy up, while still being as reliable as can be. At the end of the day, there is about a $2k difference between the cam or big bore kit and that's a decent chunk of change for an extra 10-15 hp and tq numbers.... so for those of you that have been down this road, do you have any advice? I feel like there's a lot more to the "story" than what the numbers tell, but I haven't ridden a 120" M8 to know just what the difference might be.

Thanks in advance and I look forward to this conversation!!!
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post #2 of 29 (permalink) Old 08-22-2018, 05:02 PM
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Quote:
Originally Posted by RoadglideinMO View Post
What I am looking for is a boost.... not some radical, need a seat belt to hold on boost, but a "put a big smile on my face" boost. I do a little 2-up riding and I'd like to still have plenty of ump when my better half wants to go out with me as well. My overall goal is to have a fun bike with some extra giddy up, while still being as reliable as can be. At the end of the day, there is about a $2k difference between the cam or big bore kit and that's a decent chunk of change for an extra 10-15 hp and tq numbers.... so for those of you that have been down this road, do you have any advice? I feel like there's a lot more to the "story" than what the numbers tell, but I haven't ridden a 120" M8 to know just what the difference might be.

Thanks in advance and I look forward to this conversation!!!
i was in that spot about 15 years ago. spent all the money on upgrades: AC, pipes, cam, etc. and it "wasn't enough."
— but the engine ran really well and would start at the first push of a button.

upgraded to an S&S 113 and loved it. was hotter, wouldn't start as well, didn't like to be chugging along, wanted to rip and run.
the power is addicting. and expensive on tires and tickets lol

you didn't mention who was doing the work. is warranty a concern?

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post #3 of 29 (permalink) Old 08-22-2018, 05:07 PM
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I did a Stage 4 kit on my 2011 RGU. Did cam on my 2015. The headaches by all the work weren't worth it to me. But the power of that Stage 4 kit was addictive. Just not worth it. The 15 with the 555 Woods cam, Arlen Ness Inverted air cleaner, Jackpot exhaust, and tuner was a real nice bump over stock. Reliability still in check.
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post #4 of 29 (permalink) Old 08-22-2018, 05:11 PM Thread Starter
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Fuel Moto would be building the 120" for me if I go that route- warranty is not a concern either.... I will be canceling my existing Harley ESP with tire/rim coverage and purchasing an ESP with tire/rim through Jim at Board Tracker IF I decide to go that route- from my conversations with Jim, they are building an ESP so that guys who do builds can still be covered, even if the MotorCo doesn't honor their end due to engine work.

I haven't quite decided who would do the cam as I have a few possibilities on that front that are more than capable.

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i was in that spot about 15 years ago. spent all the money on upgrades: AC, pipes, cam, etc. and it "wasn't enough."
— but the engine ran really well and would start at the first push of a button.

upgraded to an S&S 113 and loved it. was hotter, wouldn't start as well, didn't like to be chugging along, wanted to rip and run.
the power is addicting. and expensive on tires and tickets lol

you didn't mention who was doing the work. is warranty a concern?


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post #5 of 29 (permalink) Old 08-22-2018, 05:18 PM
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Originally Posted by RoadglideinMO View Post
Fuel Moto would be building the 120" for me if I go that route- warranty is not a concern either.... I will be canceling my existing Harley ESP with tire/rim coverage and purchasing an ESP with tire/rim through Jim at Board Tracker IF I decide to go that route- from my conversations with Jim, they are building an ESP so that guys who do builds can still be covered, even if the MotorCo doesn't honor their end due to engine work.
sounds like you're gonna have some fun

i would trust fuel moto, but it's not my bike.
jamie seems very knowledgeable. don't know but from what i've seen on the forums they know what they're doing.
S&S e-z start cams would prolly help. hopefully they're in the build.

best advice i can give you is to read up on the performance issues until you're ready to pull the plug.
at least you'll know what they're talking about when they rattle off a bunch of engineering terms.
make sure you can run on 93 octane pump gas!!!

and, for heaven's sake, ask all the questions BEFORE you do the build!!!
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post #6 of 29 (permalink) Old 08-22-2018, 05:34 PM
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One of the indies in this area is doing S&S 485 with A/C, 2-1 pipe and tune getting 115/115 regularly. Very reliable, starts, no leaks. That’s my winter project. My previous ride, ‘13 RK had Andrews57h, A/Call me, Pro-Pipe, tune ran 98/106 out of a TC.
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post #7 of 29 (permalink) Old 08-22-2018, 06:53 PM
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When you say 120" are you talking about the mocos 120" or an s&s? A buddy did the stage IV tire shredder kit and still breaks it loose in 3rd gear. Hes a big boy too for it to get up and move like it does.


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post #8 of 29 (permalink) Old 08-22-2018, 07:01 PM Thread Starter
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The MotorCo Stage IV is a bump from 107CI to 114CI with head work.... there is no 120" kit from the MotorCo.

https://www.harley-davidson.com/stor...18-92500062--1

I would be referencing the 120" big bore kit from Fuel Moto:

https://www.fuelmotousa.com/i-238971...ECIAL%20FLTRXS



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Originally Posted by retep2281 View Post
When you say 120" are you talking about the mocos 120" or an s&s? A buddy did the stage IV tire shredder kit and still breaks it loose in 3rd gear. Hes a big boy too for it to get up and move like it does.


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post #9 of 29 (permalink) Old 08-22-2018, 08:39 PM
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Originally Posted by RoadglideinMO View Post
I would be referencing the 120" big bore kit from Fuel Moto:

https://www.fuelmotousa.com/i-238971...ECIAL%20FLTRXS
ask them about compression releases for easier starting.

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post #10 of 29 (permalink) Old 08-22-2018, 09:00 PM
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Not worried about losing the warranty. No brainer, go 120
CCP under 200. Professionally tuned, not a FP3. Work done at a top notch shop. You shouldn't have any problems at all
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