111hp/115ft lbs...should I be disappointed?
1 Attachment(s)
I have a 2010 SE Ultra. I dynoed the stock engine before making engine upgrades. The stock 110 was putting out 77hp/100 ftlbs from the factory on the dealer's dynojet.
I made the following engine upgrades:
I decided to upgrade the exhaust and installed the D&D Fat Cat Boss 2:1. Bike was tuned again (dealer offered at no charge after his techs returned from Harley tech school last week). The techs that did the tuning said they have maxed out the ST's limits and there's no more room to improve the performance. As you can see from the dyno below they did a great job tuning the bike in terms of AFR. 111hp/115ft lbs. Nice broad torque band with 100ft lbs or more from 2700-5700 rpms. It pulls strong all the way to 6000. The bike rides incredible. Endless torque everywhere. The throttle "pulls" to the rev limiter. Its an explosive ride with excellent slow speed throttle handling. It's everything I thought it would be OTHER than appearing to be delivering far less performance on paper than other identical builds. Here's my questions:
https://www.hdforums.com/forum/attac...1&d=1264468241 |
Well since you said all responses welcome.......
"The bike rides incredible. Endless torque everywhere. The throttle "pulls" to the rev limiter. Its an explosive ride with excellent slow speed throttle handling. It's everything I thought it would be OTHER than appearing to be delivering far less performance on paper than other identical builds." Forget the paper IMO, you seem very happy with the power range and performance. Damn it man.......ride the heck out of it! :) |
Originally Posted by IndyClassic
(Post 6150571)
Well since you said all responses welcome.......
"The bike rides incredible. Endless torque everywhere. The throttle "pulls" to the rev limiter. Its an explosive ride with excellent slow speed throttle handling. It's everything I thought it would be OTHER than appearing to be delivering far less performance on paper than other identical builds." Forget the paper IMO, you seem very happy with the power range and performance. Damn it man.......ride the heck out of it! :) |
Yes you should be dissapointed.
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That sounds good but i will tell you what I had. I had an 07 fatboy that i had my HD dealer rebuild my engine. I had a Headquarters 103 10.0 to 1 compression. I was running V&H staggered big shots. I dont have my dyno chart to upload but my tq reached 116 at just over 2000 and peak hp was 106. I had a powercommamder.
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Originally Posted by dan11809
(Post 6150658)
Yes you should be dissapointed.
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I'd be pretty damn happy with it. Sounds like you did good.
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I personally havent seen any 110's with 120/120. If it pulls like you say and your happy, thats what matters. Dont get caught up in the numbers game.
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Think you have a good solid build. With that TW 408-6 cam and 10.5 CR, I believe your corrected compression is 9.5. Not bad. Am I reading your charts correctly, were these the results of 4th gear (SAE) roll-on?
Which baffle do you have in the FatCat? If its the standard baffle, they may be restricting your exhaust and holding back on your numbers some. You may want to consider the performance or performance quiet baffles. Are the 50mm and 58mm TBs you refered to the Harley/SE products or some other aftermarket part? The larger TB may impact on your low end torque, but certainly not your overall peak results. I would discuss your parts list with Scott at Hideside for his advice, as he ported your heads and know how they respond with the Wood cams. |
Originally Posted by 02GhostRiderVA
(Post 6150803)
Think you have a good solid build. With that TW 408-6 cam and 10.5 CR, I believe your corrected compression is 9.5. Not bad. Am I reading your charts correctly, were these the results of 4th gear (SAE) roll-on?
Which baffle do you have in the FatCat? If its the standard baffle, they may be restricting your exhaust and holding back on your numbers some. You may want to consider the performance or performance quiet baffles. Are the 50mm and 58mm TBs you refered to the Harley/SE products or some other aftermarket part? The larger TB may impact on your low end torque, but certainly not your overall peak results. I would discuss your parts list with Scott at Hideside for his advice, as he ported your heads and know how they respond with the Wood cams. I have the Performance (Big Bore) baffle in the Fat Cat. Because this is a 2010 there are only 2 throttle bodies that can be run and they have to Harley's since its a fly-by-wire TB. No one (to the best of my knowledge) has come out with an aftermarket FBW TB for HD touring bikes. Scott (at Hillside) is the one who made the recommendation for this engine build with the Woods 408-6 cams and he's equally surprised by the low dyno #s. I think this may be the 1st 2010 with this engine build and therefore the low dyno performance could be related to the significant changes that Harley made to the SuperTuner software. |
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