Which cam?
Cruiser
Joined: Aug 2008
Posts: 115
Likes: 0
From: MT. airey MD
well with all this talk about the different cams going on I just had to ask this. IF I do a 110 kit with some head work and a projected compresion ratio of 10.25:1, will the 255 work or do i need to look at somthing different. the 255 come with the kit but that is only 9.5:1???? by the way it's going in a heavy *** bagger that I usually ride 2-up.
Last edited by capman98; Nov 2, 2009 at 06:52 PM. Reason: more info
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
take a look at any dyno chart. you'll see that the hp and torque cross at 5250 rpm. my thoughts are that a comfortable cam that places emphasis on fat low through midrange cam profiles would be a good choice. sure, you can get more horsepower etc, with higher lifts, longer durations, but are likely to sacrifice real world usable power. looks like the 255's and 54's both achieve that. there are surely others, and "big boyz" heads has a great chart describing cam grinds. there is some valuable information there too.
This is important to think about, considering the effort involved in building the motor. Get ready to "play" and find dissapointment? NOT an option.
Last edited by Faast Ed; Nov 2, 2009 at 07:03 PM.
Grand HDF Member
Joined: Sep 2007
Posts: 4,122
Likes: 44
From: Boise Idaho
You are leaving out the HQ500 cam, I put one in last winter and it flat turned my bike into a running machine, 90HP and 93LBS of torque, best investment I have made in my bike so far and I've invested a lot!!!!!!!!!
Road Master
Joined: Nov 2009
Posts: 856
Likes: 3
Do you have a dyno chart you could post?
Road Master
Joined: Nov 2009
Posts: 856
Likes: 3
I considered this setup 'til I read this thread and started corresponding with the OP. I ended up buying the OP's used 255's based on his comments and those I had gleaned in the past two years reading forums and talking to tech support from various cam mfrs. In that period I did talk to Bob Wood more than once and he was very helpful but didn't try to sell me on something inappropriate for my needs. Rather than spend $525 for the 6-6's w/+4° gear I spent $110 instead on the 255's, as my interest is in performance below 4k RPM. I considered the dyno charts posted by the OP of that thread as nearly worthless since the tuner didn't start the pull 'til 3k RPM, and 2-3k RPM is a region that's very important to me. "
I have a question for you, did you consider the Crane cams in your quest for the right cam? The HTC-300-2 grind has nice specs for a touring bike - 33* intake close, 226 duration, 27* overlap, .505 lift. I would like to hear your thoughts on this.
Last edited by thewholehog; Nov 3, 2009 at 01:08 AM.
Tourer
Joined: May 2009
Posts: 304
Likes: 1
From: Ohio
I'm in the same boat
I've narrowed my choice to the 21 or 255 also.
I might go to 103" maybe.
Seems a lot of people have the 255's and like them.
I would really like to see a dyno sheet and a write up on the 21's.
So, my vote goes to the Andrews 21's.
I think they would give a decent boost in torque,
and make a great all-around cam.
I've narrowed my choice to the 21 or 255 also.
I might go to 103" maybe.
Seems a lot of people have the 255's and like them.
I would really like to see a dyno sheet and a write up on the 21's.
So, my vote goes to the Andrews 21's.
I think they would give a decent boost in torque,
and make a great all-around cam.
Road Master
Joined: Nov 2009
Posts: 856
Likes: 3
I'm in the same boat
I've narrowed my choice to the 21 or 255 also.
I might go to 103" maybe.
Seems a lot of people have the 255's and like them.
I would really like to see a dyno sheet and a write up on the 21's.
So, my vote goes to the Andrews 21's.
I think they would give a decent boost in torque,
and make a great all-around cam.
I've narrowed my choice to the 21 or 255 also.
I might go to 103" maybe.
Seems a lot of people have the 255's and like them.
I would really like to see a dyno sheet and a write up on the 21's.
So, my vote goes to the Andrews 21's.
I think they would give a decent boost in torque,
and make a great all-around cam.
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