I am pretty sure that I have decided on what combo to put in my new 2011 Power Pak Street Glide. My goal is to be 90+ HP and 100+ TQ. I also would like the additional torque on the lower end for the way I ride. I have read the SE204's are good bolt ins for 103's. Do you think that is feasible with this set up?

Jackpot 2-1-2 Head Pipe (from Fuel Moto)
Rev Perf EMS Tuner (from Fuel Moto)
SE 204 Cams (from dealer)
SE A/C (from dealer)
V&H Twin Slash Rounds (already have)

What are your thoughts on this combo for reaching those numbers? Thanks in advance.

 

I don't think you'll have any problem whatsoever achieving your goal with that combo. I'm very happy with my SE 204's. Even with my taller 2007 gearing, I don't have to shift down to pass, I just roll it on. Good low end, great midrange (where you do all your riding) and it doesn't fall off when you need to wind it up and that's with only 96 inches.

 

Just a few things to think about.

Firstly, I woudl say that you should be able to hit those numbers without upgrading cams. Open up the exhaust and air cleaner and a good tune shoudl be all you need. I think Jamie could provide you with a map that would get you there.

I have some experience with the SE204 and believe it is a very underrated cam. Recently, some guys have been putting up dsome nice numbers/curves but in the 96" configuration. Increase the bore size from 3.75" to 3.875" and static CR jumps up. IMHO, you will be flirting with detonation. The SE204 has a wicked dynamic advance; 8* ground into the profile. Assuming stock head gasket and chamber volume is 86cc, you are looking at 9.8 static CR, 9.3 corrected CR and cranking CR of 192psi. JMHO but that's right on the edge of ping city and hot start kick backs; a little bad gas, summer heat and you could be in trouble. If it were me, I would problaby run those cams retarded 4* with the +/- cam gear. I ran the SE204 in a 95" engine at 9.8 static CR that made 105TQ/95HP. I live in south Texas and the summers are hot; it is almost impossible to find fuel that does not contain "up to 10%" ethanol and the summer fuel is "reformulated". Anyway, the bike ran strong during the fall, winter and spring but when things heated up in July, she started to ping. We pulled timing out to eliminate the ping but the engine was sluggish with timing retarded and I had to change cams. I hated to do it because the bike ran so good with the SE204s but detonation is an engine killer; no choice.

Since you say you want the torque on the low end, why not the SE203? Less wicked advance ground in, only 4* IIRC and an intake close 2* later. This drops corrected CR and cranking CR to 92. and 190psi respectively. Not a significant drop but may be enough to avoid detonation problems.

I have assumed you are locked to SE cams but if not, there are several other options to consider. The Andrews 37H would be an excellent choice.

I know nothing about the RP EMS tuner but I don't believe it will " auto tune" timing?? Running a cam like the 204 will likely require timing adjustments to balance tuning between optimum performance and minimiizing the potential for detonation.

For sure, you need compression relealses; not sure but they may already be a feature of the Power Pak package?

 

EMS is not yet available for the 2011 according to Rev perf as of 3 days ago they still had not been able to break-in to the stock ecm.

 

my 2010 limited Woods cams TW-6-6, PC-V, Jackpot 2/1/2 head pipe, Jackpot Dyno Tuned Mufflers, Fuel Moto SE Stage 1 air cleaner, 96HP/109TQ

 

Running a 96 inch, I had detonation problems with the stock cams and the problem was gone after I changed to the SE 204's. I live in Sacramento, CA where the temps exceed 105 degrees with some regularity and have no problems with these cams. I've even added additional ignition timing (only 2 degrees on the low end) and have had no ill effects. I don't know whether you'll have the same experience as I have but that's my story and I'm sticking too it.

 

The OP is planning a 103", more compression. No problems in a 96", a good fit but 204s in a 103" is a different animal.

 

With your combination I've seen nothing but good numbers (that meet or excede what you're looking for) with SE 204's, or Woods TW 6-6's or 555's. Can't comment on the detonation part as I've got a 96". PS. I'm getting the numbers your looking for with just Stage 1, and Woods 6-6's, so you should have no problem doing this with a 103" at all. Good luck.

 

Well with the build that I have which you can read below the pic. I am really happy with my setup. Not a lot of HP but the torque is there and that is what I was looking for....