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Stage II: Torque Cam vs power cam

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  #11  
Old 09-20-2018, 07:05 AM
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Also remember that people throwing out peak numbers may not tell the whole story. The person may have only gained 5-10 at the peak, but they may be making 20+ more down low where it's most useful. No argument that headwork will really liven a cam change up, but I wouldn't say it's useless without it. I had been saving up to do headwork and cam change at the same time, but that account seems to keep getting tapped for something else. I'm debating doing just cams over the winter.
 
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  #12  
Old 09-20-2018, 07:50 AM
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Originally Posted by mrlexus


what did it dyno at with the stock rushmore cams?

84/99 iirc

But FNG is correct too - the biggest change isn’t the numbers, but where the power curve peaks. The 585 is very noticeably stronger down low.
 
Last edited by QNman; 09-20-2018 at 07:52 AM.
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  #13  
Old 09-21-2018, 10:19 AM
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Originally Posted by QNman
I will respectfully disagree. I did cams (see my sig), and I don't regret it one bit. 92 HP and 110 ft-lbs, and a grin ear to ear.
Sure. But 85 HP and 105 TQ are easily had from the stock Rushmore cam with a good tune. Pretty costly to add 7 and 5 IMO.
 
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  #14  
Old 09-21-2018, 10:21 AM
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Originally Posted by Tn.Heritage
If it's the Limited it has 10.1 comp. but the Ultras have around 9.5 I think, they can use a little bit more but your right, you can get a PV Liscence and tune her up but the 48 will give alot of bottom end tq.
Air cooled are about 9.8 IIRC.
 
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  #15  
Old 09-21-2018, 10:23 AM
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Originally Posted by rhuff
Sure. But 85 HP and 105 TQ are easily had from the stock Rushmore cam with a good tune. Pretty costly to add 7 and 5 IMO.
Then you miss the entire purpose. I didn't buy "numbers", I bought a curve. One worth every penny in my book (and wallet).

Peak numbers don't tell the story; only the curve does that.
 
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  #16  
Old 09-21-2018, 10:52 AM
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Originally Posted by dscholl
I have a 2014 ultra classic (103) with a stage I upgrade ( I am using Rinehart head pipes and slip-ons) and am considering a stage II upgrade. Can you give me the details on the real difference between a torque cam and a power cam for the stage II? Also, what else do I have to consider for the upgrade?
The first thing you need to determine is how YOU ride the bike. What I mean is for you to go out and ride as you normally do and figure out what RPM range you ride in MOST of the time. If you are like most of us you will find you mainly run the engine between idle to 3500 RPM 95% of the time your riding. IF you fall into that group, then concern yourself with improvements in that RPM range. As the nice big numbers above 4000 RPM look good on paper but will very rarely every get used by you. Remember that 3000 RPM in 6th gear rolling down the highway is 80 MPH.
 
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  #17  
Old 09-21-2018, 11:52 AM
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Originally Posted by QNman
Then you miss the entire purpose. I didn't buy "numbers", I bought a curve. One worth every penny in my book (and wallet).

Peak numbers don't tell the story; only the curve does that.
You are totally right.
The majority on the various forum websites base their whole ride on those damn peak numbers.
That is just a part of the whole package.
Area under the curve is a foreign term to most.
Im happy I installed TW222 cams in my Rushmore for $350, S&S lifters $106, SE pushrods $155, o rings/bearings for a few bucks and it turned out great, next a proper tune as soon as I can find somebody within three day ride who can tune PV2.

 
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  #18  
Old 09-21-2018, 12:37 PM
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Other then Fuel Moto who would you go to for head work. I have a stage II motor but want to go for some more. I just am not sure I want to go with Big bore kits.

Shaun
 
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  #19  
Old 09-21-2018, 01:42 PM
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Originally Posted by JakeUSAF
Other then Fuel Moto who would you go to for head work. I have a stage II motor but want to go for some more. I just am not sure I want to go with Big bore kits.

Shaun
Scott at Hillside or Frank Dragos would be my go to people along with FM.
 
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  #20  
Old 09-21-2018, 04:23 PM
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I'm researching cams right now an from what I've been seeing on dyno charts (quite a few on fuel moto's site) the stock cams make solid power the aftermarket cams make it earlier an longer, not just for a brief window. here's a comparison between stock cams in a stage one with a good tune an TW-222 cams an a good tune (exhaust pipe may have been upgraded too for the cams)

https://www.fuelmotousa.com/files/lp...-103-Losch.jpg

now that I have a power vision an tune from Fuel Moto I'm not in a hurry for cams...bike feels rock solid with good power....I will change them when I do cam bearings an lifters next fall.
 
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