103 upgrade
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2nd Gear
Joined: Feb 2015
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From: Texas
103 upgrade
I am upgrading my 2015 street glide with a SE stage 4 legal kit. I already have V&H 2 in1 with rhineharts and a SE heavy breather. I also plan on adding the SE cam plate support with high volume oil pump, SE high capacity oil pan, larger injectors, roller rockers and upgraded cam bearings. Then A trip to the dyno. To the engine builders out there are these extras overkill?
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Joined: Jun 2006
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From: san antonio
I am upgrading my 2015 street glide with a SE stage 4 legal kit. I already have V&H 2 in1 with rhineharts and a SE heavy breather. I also plan on adding the SE cam plate support with high volume oil pump, SE high capacity oil pan, larger injectors, roller rockers and upgraded cam bearings. Then A trip to the dyno. To the engine builders out there are these extras overkill?
I know a couple of guys that have had the Stage IV street and race kits installed. All were "tuned" by the dealer and all had rideability issues that required a competent tuner to clear up. The bikes were rideable with a better tune but lacking in power compared to similar builds with after market cams.
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Joined: Mar 2012
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From: Santa Cruz
I'm guessing ya are going to the SE kit because ya think it will be under warranty. SE book says that is only true if installed before delivery. If ya are having it done before delivery, kool. Otherwise ya may have trouble if ya have engine problems. Performance wise ya can do better in the aftermarket. But to the original question, yes the extras (except for the cam bearings) are overkill and unneeded.
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2nd Gear
Joined: Feb 2015
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From: Texas
It is due to warranty. If it is installed within the first 60 days warranty is valid. So roller rockers and high capacity oil pan are overkill.
I would also like tq in at 2000 through at least 5500 rpm. I ride 2 up 60 to 70 % of the time. And equal riding time in town and highway.
I would also like tq in at 2000 through at least 5500 rpm. I ride 2 up 60 to 70 % of the time. And equal riding time in town and highway.
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HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
It is due to warranty. If it is installed within the first 60 days warranty is valid. So roller rockers and high capacity oil pan are overkill.
I would also like tq in at 2000 through at least 5500 rpm. I ride 2 up 60 to 70 % of the time. And equal riding time in town and highway.
I would also like tq in at 2000 through at least 5500 rpm. I ride 2 up 60 to 70 % of the time. And equal riding time in town and highway.
If you want torque down low, plant to tour/ride two up 60%-70% of the time; IMHO, you should abandon the Stage IV kit plan. Save yourself some money and bolt in a set of SE255 cams, replace the inner cam bearings, upgrade to the billet plate and pump, replace the lifters with S&S standards get the bike in the hands of a good tuner and get it tuned. You will have TQ off idle but the SE255s will be all in at about 4500. I really don't think you will spend much time up around 5500 rpms. JMHO.
I have dyno sheets of Stage I 103s bumped up with a set of 255s; if interested, I will have to look for one but if interested, let me know and I will post one and you can compare.
Last edited by djl; Feb 27, 2015 at 08:40 PM.
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