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[Unbalanced]

Mark after our conversation I would definately not recommend the compensator sprocket.  
there is no need to do this unless you have considereed strongly a 6 speed.   You need to address the issues with the front lean rear to rich.   This is not doable with the power commander since it tunes both at the same time.   I also dont recommend those dual fire spark plugs.  

I would check for exhaust and fuel injection leaks before next steps.

If no leaks are found then I would then look at the injectors to be sure they are both firing and spraying the correct patterns.

Now if they are you will probably need either a download or to buy the race tuner.   In this case I would lean more to the race tuner so that you can play with each cylinder provided you have a tuner that will work on your bike without the muffler on.   Since you have a 2 into 1 your going to need to get into each header and sniff to be sure they have equaled out and neither is running to rich or to lean.

I would take the money he wants you to spend on a sprocket 250 and spend it on an appropriate cam like a 251 or a gear drive that better suits the way you want to drive the bike.

I think your first order of business is getting the cyclinders to both run correctly and then go from there.   Moving on without taking care of this just means throwing money at a problem and still having the problem.

[syclone]

The SE 257 cams want at least 10.0 compression...better yet around 10.5:1 to give any kind of low end torque as well as perform as they should up top. One look in the H-d SE catalogue for the various builds and you will see the Stage 4 torque build...using 95" Se forged pistons and SE performance heads for a 10.5:1 comp ratio. with the 257 cams.
Our 103 motors are advertized as only 9.0 :1 comp ratio but if you do a hot compression test on one you end up with 165 lbs cranking compression which works out to @ 8.7 static ratio. That

[103RKyeehah]

syclone, thanks for your input.  I've learned through this process that whoever put the 257 cams in this bike  (previous owner) did so without completing the job.  My guess is he dropped 'em in, tuned it to run and then rode it hard from.  There is also evidence the factory recommended 'break-in' period was not followed.  In any case, I'm not happy with the 257s and definitely want to swap them out for something else.

FYI, the guys at Twin Visions Speed an Custom have been very forthwright with the options I have.  I haven't disclosed 100% of our discussions, but can tell you they have been very up front with me.  He did tell me in order for the 257 to work well with my bike, headwork and all that you mentioned would need to be done.

That being said, I need to budget for the future mods that need to be done.  I'm ready to consider one of the other cams mentioned, a race tuner, and possibly some head work.  I'm not made of money though, and want to do things right as I can afford to.

Can you tell me the major difference between the tw5 and 37g, and 26g.  I'm just getting used to the idea of changing cams and want to make the right choice.

Thanks

[grc]

Next visit will be to address the oil burning.

[syclone]

syclone, thanks for your input.

[103RKyeehah]

Question:  is the rear plug wet & black, or dry fluffy black?  Anytime folks mention oil consumption and a black plug, I suspect intake valve stem seal leakage.  This has been a large problem for H-D, and they in fact redesigned the valve stem seals for '06.  Just a thought.

Jerry

grc, rear plug was shiny, not soaking wet, and black.  Ring replacement has been mentioned by shop to resolve oil consumption.  

Thanks

[sefatboyscott]

Granted that as far as mechanics and modifications go I have no clue. One thing I do have a clue about is being a consumer. Hopefully if I was you and had purchased this bike from a H-D dealer I would have taken the extended warranty. That being the case I would take the bike to my local H-D ( read authorized ) wrench , tell them my problems have them replace the rings, fix whatever else is wrong and put in a brand new stock cam set up re tune the thing and leave with a bike that runs new again for 50 bucks...but thats just me. If there is damage to the rings there could be damage to other parts of the bike including the cylinder walls etc.. [smiley=sauer055.gif]

Now I know alot of guys know their chit when it comes to modifications on these bikes that make them go faster so on and so forth. It also makes sense to me that the epa could have alot of involvement on how the factory can legally produce their motors.............On the other hand however these other facts are obvious to me as well......The H-D research and developement team has paid more money than most of us will ever have using teams of scientist/engineers and state of the art equipment to produce what they think is the best possible set up for this motorcycle including all things such as tire size in real world driving conditions. That being said now I factor in whom I trust....H-D been making good bikes since 1903 and have built more bikes than anyone in these posts......( Ok we can take away a few years for AMF we all know those sucked! ). BTW the 05SEFATBOY is voted cruiser of the year v-twin magazine july!   [smiley=2thumbsup.gif]

[103RKyeehah]

Doing more research on Cams.  Found this description on two Andrews Cams and need to better understand which might work.  Here are the descriptions for the EV 23 and 27

EV23:
Note: Must check coil bind, valve-to-valve clearance and valve-to-piston clearance.
EV23 GRIND CAM
[list bull-blueball]

• Bolt-in cam for heavier touring bikes and high-geared bikes with 65-tooth rear pulleys
  Crisp throttle response and strong pulling power from 1,500 to 6,000 rpm
  

EV27:
Note: Must check coil bind, valve-to-valve clearance and valve-to-piston clearance.
[list bull-blueball]

• EV27 GRIND CAM
  Bolt-in street cam with fast open and close ramps
  Similar timing to EV3, but designed to produce a very broad torque band
  Pulls from 1,500 to 6,000 rpm
  

I know there are lots of choices out there and I appreciate the conversations and educated opinions of everyone.

[grc]

I believe the "EV" cams are for evolution motors only.

[103RKyeehah]

Thanks, GRC.  
See, that's why I need the help from you guys.
[smiley=dunce2.gif] [smiley=nixweiss.gif]

Thanks

Alright, so where do I find descriptions for my 103?  I found those on an Ebay listing.

[grc]

Try this link to Andrews - they have listings for chain drive and gear drive cams.
http://www.andrewsproducts.com/motorcycle/index.htm

Jerry

[103_RK]

Unbalanced, I change my oil in my 03 SERK and only add 4 qts.  When I check the oil level between oil changes, I am never more than 1/3 qt low.  Isn't the oil cooler too low to drain during an oil change?  It appears that the extra oil in the coller is not changed unless there is a way to drain it.  I change my oil at 2500 mile intervals and currently use syn3.  I am thinkng about switching to Ammsoil but have not bothered yet.

[SPIDERMAN]

yeehah    headwork is definitely in your future- - -   my opinion, Dave Mackey is the best H-D head guy in the business,  at one point before the V-Rods started dominating TopFuel Bikes, Mackey had 7 of the top 10 AHDRA Top fuel riders running his heads. I believe you can find him online  Great thing about Dave, is that he will come to the phone and discuss with you where you're at, suggest a few things and go from there   He cuts his own cams too, profiles are similar to Leinweber without the steep shoulders

[Big Time]

Really curious too hear what you cam up with. If you think to 257s are bad, imagine the 260s that the idiot put in the seeg I just picked up. Can you say two stroke powerband!?

[103RKyeehah]

Really curious too hear what you cam up with. If you think to 257s are bad, imagine the 260s that the idiot put in the seeg I just picked up. Can you say two stroke powerband!?

Hey Big Time, Let me tell you how bad the 257s are for my riding style.  

I recently made a 1600 mile trip across PA to NYC and then up through the mountains of NY and back across the Southern Tier of NY to OH.  Over half the trip was spent in the 45-50mph range and the other half was OTR at about 72mph.  I was loaded with an additional 85 pounds of gear for cold weather and was using wind deflectors over the engine guards. (riding in 45-50 degree temps made the guards a must)

First, I had to spend all my OTR time in 5th gear (rather than 6th) because there was too much load in 6th at 72 mph.  Second, while my riding buddys were running in 5th gear cruising through the mountains, I had to ride in 4th because of the load again being too much at that lower speed.  

Now, on the other hand, while on the highway with my buddies, since my torque kicks in right around where I was crusing......all I had to do was open the throttle and hold on if I wanted to fly around someone.  All the way from 72mph to 110 or so, the power just kept on coming.

Bottom line IMHO, the 257 cam is totally wrong for how I ride my SERK.  Put a load on it and it's even worse.  I'm planning on swapping out for 251s (or a comparable geard drive cam)over the winter.

For now I'll just enjoy the memories I made with my friends and look forward to another ride in the spring.

Later