.
Dyno results for 2010 Limited with SE 255 cam
The peak numbers alone hide things, the 96 with the SE-255 looks to be as good as the 103 with them. Here is the dyno sheet, same engine as a 96 with the SE-255 and as a 103 with the same cams. The peak numbers don't change much, but there is a lot of real estate between the lines...
Dyno-96-to-103-small.jpg
The red lines are the 96, the blue the 103. The difference on the road is worth the price of the jugs and pistons and retune.
The only downside to the 103 Stage II is that the Monster Ovals aren't so quiet anymore...
Dyno-96-to-103-small.jpg
The red lines are the 96, the blue the 103. The difference on the road is worth the price of the jugs and pistons and retune.
The only downside to the 103 Stage II is that the Monster Ovals aren't so quiet anymore...
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
Your charts look very good, BTW, and I love the shape of those flat curves. The full Stage II will give a bump in performance over a stage 1 TC96, probably mostly because of the added compression, 10:1 vs. 9.2:1. OTOH, I will say that for my needs the 255 option in the TC96 is the better bang-for-the-buck if you are just looking for a meaningful bump in performance. I did the upgrade for $285 as a DIY project using used cams, including a $93 inner-bearing tool, but if you have all the right tools you can do this job for about $200, maybe less. Low-mileage CVO pulls are fairly common on Ebay for about $150, and one forum member just bought a set for $120 as a buy-it-now. Used cams are fine if they aren't damaged by a catastrophic engine event, as roller cams wear very little even in long-term applications.
I'm not raining on your Stage II report, and it is obviously very impressive, but I just want to emphasize that a nice bump in performance can be had for very little money without any engine mods.
This would be the case with any motor you install the 255 cams into, I think, and probably any performance cams. I have a stock TC96 with the 255's and found the bump in exhaust noise level to be over-the-top, although a baffle change mostly put things into acceptable territory without a performance hit. A cam upgrade will increase exhaust noise, so this needs to be factored into the decision. Some want the increased noise level, and for them it is just one more reason to upgrade. I didn't, but definitely wouldn't go back to stock.
Your charts look very good, BTW, and I love the shape of those flat curves. The full Stage II will give a bump in performance over a stage 1 TC96, probably mostly because of the added compression, 10:1 vs. 9.2:1. OTOH, I will say that for my needs the 255 option in the TC96 is the better bang-for-the-buck if you are just looking for a meaningful bump in performance. I did the upgrade for $285 as a DIY project using used cams, including a $93 inner-bearing tool, but if you have all the right tools you can do this job for about $200, maybe less. Low-mileage CVO pulls are fairly common on Ebay for about $150, and one forum member just bought a set for $120 as a buy-it-now. Used cams are fine if they aren't damaged by a catastrophic engine event, as roller cams wear very little even in long-term applications.
I'm not raining on your Stage II report, and it is obviously very impressive, but I just want to emphasize that a nice bump in performance can be had for very little money without any engine mods.
Your charts look very good, BTW, and I love the shape of those flat curves. The full Stage II will give a bump in performance over a stage 1 TC96, probably mostly because of the added compression, 10:1 vs. 9.2:1. OTOH, I will say that for my needs the 255 option in the TC96 is the better bang-for-the-buck if you are just looking for a meaningful bump in performance. I did the upgrade for $285 as a DIY project using used cams, including a $93 inner-bearing tool, but if you have all the right tools you can do this job for about $200, maybe less. Low-mileage CVO pulls are fairly common on Ebay for about $150, and one forum member just bought a set for $120 as a buy-it-now. Used cams are fine if they aren't damaged by a catastrophic engine event, as roller cams wear very little even in long-term applications.
I'm not raining on your Stage II report, and it is obviously very impressive, but I just want to emphasize that a nice bump in performance can be had for very little money without any engine mods.
To the Op, sorry about hijacking your thread. Wasn't my intention.
Road Warrior
Joined: May 2007
Posts: 1,384
Likes: 1
I've got a 2010 Limited with Stage 1, V&H ProPipe, Screaming Beagle FatCat slips, and a SE259E Cam. Fuel is handled by SERT and dyno'd at Horny Toad HD. 95 hp, 105 ft-lbs of torque. Got a deep growl that's low and set's off car alarms, yet I can still hear the radio at 80 mph. Perfect for me!
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
3rd Gear
Joined: Oct 2009
Posts: 7
Likes: 0
Folks, just my opinion, but there is allot of horsepower and torque being left on the table.
A mild port job and a switch to an Andrews 54 cam will put you in the 100 HP and 110 TQ all for about $400. That is a big jump from what I am looking at here. In addition the torque curve will be flat from 2400 rpm on.
To me that is allot of fun for $400.
A mild port job and a switch to an Andrews 54 cam will put you in the 100 HP and 110 TQ all for about $400. That is a big jump from what I am looking at here. In addition the torque curve will be flat from 2400 rpm on.
To me that is allot of fun for $400.
Thread
Thread Starter
Forum
Replies
Last Post
