Tryin' to Stick with 96"
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Cruiser
Joined: May 2010
Posts: 126
Likes: 1
Tryin' to Stick with 96"
Wantin' to Stick with 96...
Quote:
Originally Posted by Old Gunny
I think HD measures the HP and Torque at the crank.
Nothing wrong with that.
Most dynos measure at the rear wheel.
Nothing wrong with that.
The bigger engin will be stronger almost always all things being equal. At the crank.
But to measure apples to apples remember the 96 engine has a good deal taller gearing.
Almost all real world dyno measurments will be rear wheel.
Nothing wrong with that except the felt, seat of the pants, will be less with the 96 all other things being equal because of the taller gearing. Unless you keep it wound up some all the time.
Point is the 96 works real good with a more torqueier cam that comes on lower. Below 2000 RPM. The engin likes it and the gear ratio likes it. Cause thats where the thing will live most of the time.
Without that a 96 will be about two gears away from where you would like to be at a unexpected rollon.
A high HP engine gives good dyno sheets. On the street, the race will be over before it gets cooking.
Got an '09 RKC. I'm thinking SE255, Vance and Hines Power Duals with the BUB 7 slip-ons I already got on, PCV with Autotune. I'm not expecting the world here, but I really don't want to go up to 103" on an essentially new bike/engine.
Anything else I can do with heads and valves without cost getting too crazy?
If not SE 255, then cam gives me the most torque down low on a stock 96?
Quote:
Originally Posted by Old Gunny
I think HD measures the HP and Torque at the crank.
Nothing wrong with that.
Most dynos measure at the rear wheel.
Nothing wrong with that.
The bigger engin will be stronger almost always all things being equal. At the crank.
But to measure apples to apples remember the 96 engine has a good deal taller gearing.
Almost all real world dyno measurments will be rear wheel.
Nothing wrong with that except the felt, seat of the pants, will be less with the 96 all other things being equal because of the taller gearing. Unless you keep it wound up some all the time.
Point is the 96 works real good with a more torqueier cam that comes on lower. Below 2000 RPM. The engin likes it and the gear ratio likes it. Cause thats where the thing will live most of the time.
Without that a 96 will be about two gears away from where you would like to be at a unexpected rollon.
A high HP engine gives good dyno sheets. On the street, the race will be over before it gets cooking.
Got an '09 RKC. I'm thinking SE255, Vance and Hines Power Duals with the BUB 7 slip-ons I already got on, PCV with Autotune. I'm not expecting the world here, but I really don't want to go up to 103" on an essentially new bike/engine.
Anything else I can do with heads and valves without cost getting too crazy?
If not SE 255, then cam gives me the most torque down low on a stock 96?
Ultimate HDF Member
Joined: Jun 2009
Posts: 6,932
Likes: 4
From: 46th State, USA
I was use to the hp and torque of the Goldwings I've owned. It's taken some time getting use to not having the same power since switching to a Harley. I'm not much into going fast and paying speeding tickets. My '09 Ultra Classic gets me down the road just fine. It takes a little longer to pass another vehicle but everything considered, it gets me where I want to go.
On long rides I've notice the riders going to the same place I am, don't like for anyone being in front of them are stopping more often for fuel. In most cases, their ETA isn't much different than mine.
Where the horsepower is measured doesn't matter to me.
On long rides I've notice the riders going to the same place I am, don't like for anyone being in front of them are stopping more often for fuel. In most cases, their ETA isn't much different than mine.
Where the horsepower is measured doesn't matter to me.
Stellar HDF Member
Joined: May 2008
Posts: 2,588
Likes: 9
From: Sunny Southern California
On my '07 I had run Rinehart True Duals, SE A/C & V&H Fuel Pack for a long time & thought it was just fine. A few months back added SE 255 cams & PCV w/ Auto Tune from Fuel Moto & their canned map. At the time I thought "WOW! All I need! What a transformation!!" Now.... looking at 103", 10.1:1, mild head work (Bean @ Big Boyz) & Andrews 54H cams. So, all I can say is WARNING: Installing 255 cams may just give you a taste of what you really, really want! LOL! 
Good Luck!
And I know, some will say I'll want more than this but... that will do it for this bike.
Good Luck!And I know, some will say I'll want more than this but... that will do it for this bike.
Road Master
Joined: Feb 2010
Posts: 791
Likes: 1
From: The Real World
Ride-on dynos do measure the crank HP and Torque by calculation of the transmission losses during the run-down......
....Torque usually increases in line with any HP increases. Your cam choice will give some variation on this but to be most effective it should be accompanied by headwork (gasflowing/compression increases and valve/guide modifications) as well as exhaust and fuelling/timing changes.
....Torque usually increases in line with any HP increases. Your cam choice will give some variation on this but to be most effective it should be accompanied by headwork (gasflowing/compression increases and valve/guide modifications) as well as exhaust and fuelling/timing changes.
Last edited by harleyriv; Aug 7, 2010 at 02:07 PM.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
Hp is Tq measured by how fast the work is done.....the race is won by hp not tq alone, while I'm not saying that tq is not important, it is, the time it takes you to get from A to B is what I want and I'll bang down 2gears in a blink and fly by the roll on torquer guy. Just my style of riding and it's not for everybody.
Club Member
Joined: Jun 2009
Posts: 5,323
Likes: 37
From: NJ
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Lots of guys have done pretty much the same thing you're contemplating, and have been very happy. The se255 likes relatively low compression and is a natural fit for the 96" motors.
Go up to 103, though, and there's a whole bunch of other cams that can come into play.
Go up to 103, though, and there's a whole bunch of other cams that can come into play.
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