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[SID8D2]

Sid,

Did you get the map from your tuner? Yes  What are your plans for this winter with the motor?Machine Jugs +.010 new pistons, new cam, inspect heads, and a few other goodies   My biggest concern is that it is carrying the torque for only 1200 rpms based on what you posted above and it is barely above stock numbers.Yea, I thought it would be better thats why I chimed in     The stock 255 cam carries longer, it is typically 2200-4200 before it bellies over.

Do you have another dynojet 250i in the area that you can get a tq/hp run on for comparison sake (not a tune). Probably


By chance do you know any of the following information ?

Have you done a leak down test as well as a cold / wet / hot cranking compression test on your bike since the build is now done and tuned? I asked HD to do it at the 1800 mile service when they dynoed it, I assume they did and found it to be good, I would like to do it myself but I don't know how to do the leak down test, I can follow the service manual I guess, I did preform a hot compression test and thought it was low but the bike only had a few hundred miles on it and I thought maybe the rings haven't seated, I can do this again

Leak down to be sure you don't have ring / wall issues? Only 1800 miles on bike but I will pursue a test.

Any idea what your piston to wall clearance is ?  .002 ?Not a clue

cold / hot / wet cranking compression to know what your static compression ?yikes, I need help from someone who knows what the F is up

What is your squish set to ??

Which head gasket did you use and how thick was your head gasket ?.030" Cometic

How far were your pistons down in the hole if they were ?.007"

   I'm in over my head and should find a good independent I think.

[HD Street Performance]

The tune is suspect.
11 runs then they went for the power run?
The AFR line is compressed. Looking at that AFR line when the divisions are 12, 13, 14 would reveal a rocky mess, I am sure. What was the starting map they used? What was changed in the timing, if any? What about the throttle by wire settings and at WOT what is the MAP pressure? All important and part of what a good tuner knows and does.

I am not convinced there are huge mechanical problems. Nor am I convinced this needs to be wallet whipped.
A compression, leakdown, and sumping test would verify that before taking anything apart.

[Unbalanced]

  I'm in over my head and should find a good independent I think.

Sid,

Did you get the map from your tuner? Yes  What are your plans for this winter with the motor?Machine Jugs +.010 new pistons, new cam, inspect heads, and a few other goodies   My biggest concern is that it is carrying the torque for only 1200 rpms based on what you posted above and it is barely above stock numbers.Yea, I thought it would be better thats why I chimed in     The stock 255 cam carries longer, it is typically 2200-4200 before it bellies over.

Do you have another dynojet 250i in the area that you can get a tq/hp run on for comparison sake (not a tune). Probably


By chance do you know any of the following information ?

Have you done a leak down test as well as a cold / wet / hot cranking compression test on your bike since the build is now done and tuned? I asked HD to do it at the 1800 mile service when they dynoed it, I assume they did and found it to be good, I would like to do it myself but I don't know how to do the leak down test, I can follow the service manual I guess, I did preform a hot compression test and thought it was low but the bike only had a few hundred miles on it and I thought maybe the rings haven't seated, I can do this again

Leak down to be sure you don't have ring / wall issues? Only 1800 miles on bike but I will pursue a test.

Any idea what your piston to wall clearance is ?  .002 ?Not a clue

cold / hot / wet cranking compression to know what your static compression ?yikes, I need help from someone who knows what the F is up

What is your squish set to ??

Which head gasket did you use and how thick was your head gasket ?.030" Cometic

How far were your pistons down in the hole if they were ?.007"

Cold Compression = take spark plugs out put on gauge to test compression hold throttle open till the gauge goes up no more and record highest value on each cylinder
Hot Compression = same thing as above only motor is at operating temperature and record pressure of each cylinder
Wet = put about a CC of oil  (Teaspoon) into the cylinder and and crank the motor over like above and record the pressure of each cylinder.

I would ask the dealer for the data hopefully they wrote it down if not have them redo it and record the data.

Leak down will help verify if you have pressure getting by the rings / a valve ... record each cylinder's loss.    there will be some it is typically done at 100 psi.

if everything is correct your squish should be .037

Before you engage redoing the motor and dumping a lot of money, I would get another dyno run done for comparison sake.  I think a lot of the information we need is in your map as 11 runs is not what i would expect on a good tune.  Doc just tuned one of my bikes and it was about 5-6 hours even with a TTS / Narrow Bands and it was quite a few more runs than you have.  I am not saying the tuner is not a prodigy, but there maybe more left in that there motor and again maybe there is not, but investigate it vs just throwing cash at the problem.  

[SID8D2]

Call my  dealer today and he said that he had preformed a Compression check and a leak down test and both were OK. He was not able to tell me what the results were other than that both cylinders were within 5psi of each other on the compression check (when I checked it months ago I could never get close to what the shop manual said it sould be, I was in the 180psi range)  Me being the skeptical type and my desire to know more sure would like to get a 2nd opinion. I will do my own compression checks this weekend and see if I can figure out how to do the leakdown test. He did not mention anything about sumping either so, I just assumed all was good. I would of thought they would have been happy to inform me if there was a problem since I have pretty much voided my motor warranty.

I am all for another dyno run, I'd love to have Doc do it but I don't see myself going to FL anytime soon. Doc has looked at my tune after using the TTS Data collector, he made a few changes in the table to help get rid of decel pop and said it looked pretty good. I started with one of the program's that came with the TTS (UE-205-002-C2). Although money is a concern I am also interested in getting this SERG spot on with all the tolerance issues gone.

If anyone can turn me onto a GOOD tuner in Michigan it would be greatly appreciated. Its pretty sad when ya can barley out run a bone stock 96" RG with pipe & A/C. Like this thread intails, I expected more, I hope it is just a tune away. If at all possible I'd like to maintain the 2-1-2 exhaust but I'm not totally against a D&D Fatcat, thats what I had on my 04SEEG and it ran great (114tq/113hp) but it was all up top, I wanted to build a good running touring bike.
 
Your suggestions are welcome but I think I need to find an independent that knows his chit.

[HD Street Performance]

If anyone can turn me onto a GOOD tuner in Michigan
I did
2 hours away from you

[SID8D2]

Thanks Don, You've been up to the challenge thru this whole process and your still there helping a novice garage mechanic thru this build. There are very few professionals in any field that continue to stand by there product/customer like you have. Its been 4 months and your still wishing you could put a wrench to my bike to help out (trust me I wish I didn't live so far away) Generally once the $$ has exchanged hands its adios amigo, and good luck. The best decision I have made to date was the choice of Heads by Dewey. Your customer service has been #1. I'm sure we'll work thru this, just be patient with this beginner. There have been a few others too who seem to want to help those in need HD-Dude and Doc to name a few. Thanks guys,

        I couldn't do it without ya

[Unbalanced]

Sid,

Any updates on the compression tests / leak downs or another dyno pull elsewhere ?

[SID8D2]

Sid,

Any updates on the compression tests / leak downs or another dyno pull elsewhere ?

No, haven't done any of the tests yet, But I was able to get it on another Dyno and tweaked a little and got a little better over what I had. The tuner was doing me a favor and did not have the time to put his heart & sole into it. In an effort to allow the bike to breathe better so these heads can flow I guess a better A/C and Pipe are in order. I like the look of both the stock A/C and stock (looking) pipe (Fullsac X-Pipe) but do believe a good 2 into one D&D or other pipe will flow much better. I have read that the HD Ventilator A/C  flow pretty good and I'm not sure I would gain much with some other A/C, just interested in your thoughts before spending $$$ to replace something I like. Also I can see where the X-Pipe could be a little restrictive with all the bends and smashed crossover pipe; Replacing the pipe may be the bigger bang for the buck/bike?

[HD Street Performance]

Try the pipe first. Even untuned it will make a big differance. BTW gaining 5/8 from nothing more than a AFR change and no VEs fixed is nothing to sneeze at. The heads breath, now letting the rest breath will unleash the power. The air cleaner can be tested while you have it retuned by simply pulling it off and comparing runs. Also looking at your MAP readings at peak rpm tells the same story about the air cleaner / TB. Should be close to 100 MAP. If not when the AC comes off and it is fixed that is the offender, if not then the TB is the constraint. All very logical and a lot better approach then throwing parts at it.