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[kng103]

hi guy's,
i am new to the forum, and would like to respond to some of the posts.
1st : the guy's with the bike that are popping on decel. are you running the stock header pipes? do you have a power commander or some kind of tuner? if your bike has been dyno tuned, and the air fuel ratio set, there is nothing wrong with a little pop on decel. the left pipe is a dud, and the air in that pipe is not as hot as the right. when a vaccum is created by closing the throttle, the air meets and POP. there is really nothing you can do about it without changing the header pipe. my buddy got rid of his by richining up the fuel mixture a bit. but if your air fuel mixture is corect, isn't it better to have your bike run good, than too rich?
2nd: ther were some questions about the specs on the se-103 engine. someone said the info was proprietary and that is corect. however, after many phone calls to motor company i got someone to fax me over what he had. heads: the heads are unique to this engine, and have a 9.1 comp ratio. the exhaust valve diameter is 1.62in. the intake valve is 1.90in. the valve seat pressure is approximately 170 lbs @ 1.82inch. the valve spring load is 430lb per inch. the max lift is 570-575. the se-253 cams have a lift of 530/530. they will not tell me the duration.
i hope this info helps someone. i am still frustrated. but finding this site was a real plus.
hd told me that they will probably go public with more info at the end of the summer.
they have already released new se-103+ parts that they want us to spend our money on.http://mysite.freeserve.com/harleyhog1/seproparts04.pdf

[starvin]

Wow pcc those are the leanest A/F numbers I've seen, although the rest of your dyno looks great???
As far as the popping on decel. I had this problem from the start and tuned it out by adding more fuel only on decelleration when the throttle was at 0%. worked perfect and if i'm wasting a little gas its only at very limited times.
kng, I've heard the theory before about sucking air in from the left pipe and i'm not saying i disagree but there are people that have true duels or 2 into 1 that still have the problem so i don't know. anyways welcome to the site [smiley=drink.gif]

[JCZ]

hi guy's,
i am new to the forum, and would like to respond to some of the posts.
1st : the guy's with the bike that are popping on decel. are you running the stock header pipes? do you have a power commander or some kind of tuner? if your bike has been dyno tuned, and the air fuel ratio set, there is nothing wrong with a little pop on decel. the left pipe is a dud, and the air in that pipe is not as hot as the right. when a vaccum is created by closing the throttle, the air meets and POP. there is really nothing you can do about it without changing the header pipe. my buddy got rid of his by richining up the fuel mixture a bit. but if your air fuel mixture is corect, isn't it better to have your bike run good, than too rich?
2nd: ther were some questions about the specs on the se-103 engine. someone said the info was proprietary and that is corect. however, after many phone calls to motor company i got someone to fax me over what he had. heads: the heads are unique to this engine, and have a 9.1 comp ratio. the exhaust valve diameter is 1.62in. the intake valve is 1.90in. the valve seat pressure is approximately 170 lbs @ 1.82inch. the valve spring load is 430lb per inch. the max lift is 570-575. the se-253 cams have a lift of 530/530. they will not tell me the duration.
i hope this info helps someone. i am still frustrated. but finding this site was a real plus.
hd told me that they will probably go public with more info at the end of the summer.
they have already released new se-103+ parts that they want us to spend our money on.http://mysite.freeserve.com/harleyhog1/seproparts04.pdf

KNG103 welcome to the board and thanks for your input.  I understand totally, what you're saying.  I have a V&H Pro Pipe.  It doesn't just pop a little, on deceleration, it's popping a lot and loud.  The Service Manager rode my bike and agrees that something is not right.  I've got my date next week and will take my bike in, as scheduled.  I'll post back here, the results.  Thanks again.

[the O`Fender]

kng103 thanks most info so far, I wonder why moco wants all this secrecy? I just got the service manual supplement for our bikes and their is no helpful info in it what so ever!!! [smiley=furious.gif]

[kng103]

OFFENDER.
did you click on the link i posted?
the moco wants us to change pistons, heads, and cams.
thay dont want to tell us what little mods we can do to gain performance.
i was reading here that some of the members have already changed cams, and had good results.
the moco told me not to change anything. that all of the components of this bike were specific to this bike.
i spent alot of money making my bike a screaming eagle road king, and i am not about to dumb another 2 grand into it.
i will be patient, and wait and see what they do. also what members of this forum will do.
besides, i dont want to void my warranty.
if i knew then what i know now, i could have built a 95ci, that would blow this one out of the water.
still i am confident that with a few small mods, this bike can really perform, and still be a great touring bike.

[the O`Fender]

103 I do appreciate the insight. If the cam is in fact .530/.530 that is sufficient lift for where I want to go however, the heads with those valves sizes are too restricted and need to be opened up on both valves. I have a stock set of TC88 heads sitting on my work bench that I needed to know if they were going to need some massaging (got them on ebay for $100). So despite what the moco wants, I want mo'preformance for less money!!! [smiley=1syellow1.gif]

[JCZ]

I have popping on deceleration so I took it to the shop Sat.

[kng103]

jcz,
i have the same problem with the popping and the loss of power when i go full throttle.
do you know what they did to fix it?
i have already had the bike dyno tuned and the air fuel ratio is almost perfect.

[JCZ]

jcz,
i have the same problem with the popping and the loss of power when i go full throttle.
do you know what they did to fix it?
i have already had the bike dyno tuned and the air fuel ratio is almost perfect.

I'm not sure exactly what they did.    I can tell you that my friend at HD sent my dyno sheet to the person that he thought to be the most knowledgable person at the Motor Company, regarding the 103" and this was his response to my first dyno:

"the torque being up high in rpm is mainly a result of the CVO cam.....the cam is actually a high rpm cam....it is good for about 7000 rpm peak HP....with the right induction module/carb.

As far as making it pull a little better on the bottom end....I would try rolling some timing in....as you know when we cal we have to do it for worst case.....hot, high comp, etc. ....his engine may be able to handle a little more...... but remember if he takes it to Az. he may need to be careful.....hot with bad fuel......ion sensor should correct for this.....but it is a picky beast.

As a side note.....it looks like the AFR is flat at 13.5:1......this is recommended in the manuel to ease tunning....but he may pick up a little at WOT with a slightly richer (12. AFR.....and I hope the cruise range was returned to 14.5 or so......I am afraid some technicians have tuned the VE values to achieve the 13.5:1 every where and then leave it.....AFR table should be returned to something similar to what was in the base cal and then tweaked for power after the VE's are returned...."

I took this email with me, when I took the bike back for the re-tune.  Other than that, don't really know what they did and they seem to want to keep the details close to the chest.

[JCZ]

Update.....my bike started popping again, after about 250-300 miles.  It gradually got worse, to the point where it started popping when I'd accelerate and shift.....it would pop during the shifts (as I rolled off the gas and pulled the clutch in).  I dropped it off again, last night.   I'll keep you guys posted.

[JCZ]

Weld was busted on the rear cylinder exhaust flange.  It's all good now!  Bike is home.

[Johnny]

JCZ - Had my bike dyno tuned last week at dealer and am getting the exact same poping, also seems some of the low end is gone from before tuning.  At the same time had SE air kit, SE mufflers and race tuner installed.  Was a little disapointed that it didn't pull better.  Talked to the dealer and they said bring it back in which I am scheduled to do next week.  Will also take a look at the flange.  Thanks

[JCZ]

JCZ - Had my bike dyno tuned last week at dealer and am getting the exact same poping, also seems some of the low end is gone from before tuning.

[110tHunDer]

Just had my bike dynoed today and thought I'd post the results.  Only modifications to the bike are SE air filter, SE one-piece (slash up) slip-ons, and the standard Stage 1 reflash courtesy of the SE race tuner.  You guys have shown there's a lot more in these bikes, but I'm real happy with the way mine runs, especially compared to the 2002 88" Electra Glide Classic I'm coming from.  I think I may stop here before things start getting expensive. [smiley=laugh.gif]

[110tHunDer]

Here's the graph above along with the one from my '02 with the same mods.  Like the saying goes, there's no substitute for cubic inches.  The extra 20 ft/lbs. of torque is very noticeable on this bike. [smiley=beerchug.gif]