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[jsfenster110]

I know there are a lot of cam threads.  This is my 7th Harley so I read a lot and try and learn.

I had a 2016 CVO SG and ran the 100s.  They were fantastic for a cam only 110.  Zippers now has their 587 and it is specifically designed for the 110.  There are not many builds on any of the forums.

Early torque, fast revving and a good pull to 5,000 is what I am looking for.  I have the rinehart h-pipe slimline duals and COBRA race pros 4".  Yes I know, there are better pipes but I just bought this bike and it has this combo on it. The sound is amazing!

This time around if is a 2015 SGCVO.  I love these bikes.

[busarealfast]

Been there done that.  The stock 255 in the 110 pulls harder down low. I'm still running the 587 but upgraded with the se 117 big bore kit. Now it has the similar power band the 255 did with a lot more torque and horsepower.

[HD Street Performance]

Something has to give when you have a 6° later intake close than the SE255 and likely slower ramps so longer seat to seat timing. The combination becomes more pipe dependant too. So it could have great early torque with that cam but it will take a tuner that adds more timing where needed and a baffle on the smaller size to have it all so to speak. It takes a whole system to obtain desired results, cams do not work by themselves. There are not good cam brands or bad or a great do everything cam. Think good combinations of parts and tune.

[fastfreddy]

im at 51k miles on my 110 w/dx pipe and 1.75 cores TTS (FS map) and thinking its time to freshen up the motor, witch of these cams would be a better choice... goal is to keep TQ high under 3500 rpm not interested in big HP just  great touring manners. also lifters bleed down easily and want resolve this issue   

[HD Street Performance]

Raise the compression up a little on the rebuild and you can use a little longer cam and have it all. Steve George uses the TTS and Andrews 54. The TTS 150 is a cam that will make great torque but still be in the game after 4,000 rpm

[jsfenster110]

HD Street,

I appreciate all your helpful comments.  I have learned a lot reading your posts.

So, the TTS 100 for a stock bike, other than pipes, has the torque lower than a 587 if I read you?  I have used these cams before.  They were great.

Thanks

[HD Street Performance]

Yes the TTS100 is a short torque grind. So is the 587 but idle to 2000 will feel more responsive with the shorter TTS100. Frankly the difference between stock and the TTS100 as far as I am concerned isn't worth the swap if performance is the primary goal. That is why I suggested the TTS150. If I went to the TTS100 over the stock SE255 I would be looking at improved valve action and longer lifter life. The grind is ground by Andrews and the lobes are more conservative in my opinion which is just based on witnessing lower valvetrain noise. I have not had them on a camdoctor to actually measure. The performance of the two, SE255 VS TTS100, and torque output aren't going to be that different.

[busarealfast]

Lets face it. In stock configuration the 255 is a great cam. I was disappointed when I installed the 587 in my stage 1 cvo 110 ultra with pro pipe and thundermax auto tune. I realized then how good the 255 bottom end torque was after the swap. After the cubic inch change the 587 felt better and it will pull hard to 6k. What's so funny is when you talk to zippers about the 587 they say not to run it with added compression or bigger cubes. My experience is different. I also noticed more valve train noise with the 587 vs 255. Zippers claim the 587 has the quiet ramp. Anyway Ill just shake rattle and roll a little while as the sound from the pro pipe when I roll on the power is suWEEET!

[HD Street Performance]

What is a hot rod cam for a smaller motor reduces in stature as it is put in a larger motor with a higher airflow demand. This is what happened with the 110 to 117 move. Now the noise. When a grind comes from Andrews, lets say for discussion, the company either gives them the profile design or an Andrews designer assists with that. It is the decisions about how fast the ramps will be that will determine the noise level (simplified for the purpose of brevity). So a cam that has 230° degrees duration at .053" lift could be ~260° or perhaps ~275° at .002 or .006" lift. It is what in the car world is called advertised duration, seat to seat timing. The complete array of numbers at all the lifts give us the true story and how fast the ramps are. In my experience TTS (Andrews Based), S&S, and Andrews native grinds are conservative. Others not so conservative and everywhere in between. Noise levels increase, the need for heavier valve springs, and subsequent valve train wear including lifters take their toll. Faster ramps can result in higher potential torque and horsepower up to a point. From my NHRA stock class racing days we used the extreme versions, extremely fast ramp cams but we were limited in lift and duration. The valves were lofted on purpose for added lift! Heads were changed every 9 rounds with hammered stamped rocker arms and valve stems mushroomed. State of the art in 1970. Same story at the time with NHRA class Super Stock racing. We expect many trouble free miles from our Harleys and if you hear valve train noise this more than likely lash. Lash means the lifter roller is momentarily is leaving the cam lobe. Not good and something that can be controlled.

[jsfenster110]

Great discussion guys.

So, based on your feelings of the close similarities of the 255 and tts100, you would choose the tts150 for a cam only over the 587?

I saw somewhere someone said the tts150 needs more compression...

What is another option with emphasis on torque and a smooth powerband?  I just changed the lifters at 25,000.  At 30,000 I am going to change the cams.

Thank you.

[HD Street Performance]

That term "needs more compression" is abused in my opinion.  It is possible to run a cam with less than noise bleed compression and no room for less than perfect octane. Then add a little timing rather than back it off. Cooler running motor will last longer. The first CVO 110 would crank 225 with compression releases off. They were a furnace too. Very few exceeded 30k miles without issues. Some of the issues have been addressed over the years, others not so much.
I have run the tts150 at 9.8 and as high  as 10.7. 10.7 was not happy. 9.8 left some overhead.

[busarealfast]

HD Street, has anyone explored and documented the cam timing specs on the TTS 150?  I think last time I noticed a post on here about TTS cams seemed like it was top secret. I would love to see a comparison vs the Andrews 54 specs which I have considered to reduce noise.

[HD Street Performance]

How can you compare specs if all you have are numbers at .053"? I am sorry I don't have the numbers for the TTS150.