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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I have a 2011 CVO 110 and purchased the 117 kit. The build is as follows;
Standard 117 kit with 5.3inj, 58mm TB, 9.9:1 pistons with the exception of;
.03 head gasket
Woods TW-7H cam
Adjustable pushrods
SE CamPlate and Oil pump
Trask Air Cleaner
currently have true duals with Tab slip-ons
My 110 with the Trask AirCleaner and Duals showed 92.51hp and 115.85Tq
My 117 build with Trask AirCleaner and Duals shows 98.87hp and 112.18Tq
I am told that it must be the exhaust so we are ordering a 2-1 exhaust.but it makes no sense that with the same exhaust i am showing so little gain in hp and losing in torque.
Any help would be appreciated.
First question comes to mind is who did the tune; the tune is certainly suspect. All things being equal, the 7 addtional cubic inches should have shown an improvement in both TQ/HP. I would be looking at the tune and considering another tuner.
Is the red line the 117? Because irrespective of the peak torque, there's a huge fat area under that curve at low RPM that is way more important than the torque peak. If you're that concerned about the peak, install a bigger cam.
It is at the Harley dealership where the 117 kit was installed. I could be wrong but i believe they said they started with the harley 117 map since they didn't have a map with the woods cam and then started tuning from there. It is on a dynojet.SAE smoothing 5
i switched to the TW-7h because the cam calculator showed with my build it would be at 9.48:1 corrected compressions and 197.9 CCC. The 259-e showed 9.17:1 corrected compression and 189.7 CCC so I thought the tw-7h would help with lower end torque since I ride 2 up most of the time and still help with total power. I could have been totally mistaken. I just thought people had said in the past that if you didn't use higher compression you would fall short with the 259-e.
I could have them put the 259-e back in and maybe go with suburban 117 pistons with +6.6cc dome. That would put it up to 9.87:1 corrected and 208.3 CCC.
I don't disagree with the other posters comments but very suspect of the quality of a dealer tune. The OP's dealer may be the exeption to the rule but as a general rule, dealer tuners don't have a good track record. Before I would start changing exhaust sytems or cams, I would get the bike in the hands of a tuner known for their proficiency. What software was used to tune?
@krackken Where are you located? Maybe we can point you to a known tuner in your area?
Thanks, I'm in Tulsa, Oklahoma. They use a dynamometer 250ix with supertuner and sell me a powervision license. I'm not 100% what the software version is.
Your cams and the exhaust are both working against it, I wouldnt expect any tuner to get a lot out of it. Before Id change pistons Id spend the money on a different set of cams. Heres a link to a 117 drop on with cyclerama 575 cams, which has the low end youre wanting, further down he shows what it did with 259s
7 Surprising Harley-Davidson Products that Are Not Motorcycles
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Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
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117 kit help
