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[ob1]

Just back from picking up my 07 SEUC from getting it dyno tuned with a SERT. The results are very lacking and have me asking questions to myself. The bike was just in 1800 miles ago to have new heads put on, new rod's and flywheel, an Andrews 54 cam, jugs honed and new rings. I have a Rinehart 2-1 pipe and S.E.stage 1 air cleaner.

My base run was 77.69 h.p. and 88.90 max torque.
My final after tune run was 80.65 h.p. and 94.83 max torque.

These appear to be numbers that are close to stock should be. The tech was confused by the numbers and i could not get a straight answer out of any one. The only thing they felt was that the throttle body was restricting it.

Any thoughts on why my motor is lacking?

Appreciate your help and insight....

[HD Street Performance]

No way to diagnose this over the internet.
There are many things to check, first the motor health with a leak-down and compression test with the ACRs disconnected.
Assuming good motor health, sumping (oil left in the crankcase from not properly functioning oil pump scavenge side) or timing knock retard activity are a few heavy hitters that kill power.
The tune may have not been done properly also.
I assume you got a copy of the map
Can you post in Excel the timing and VE tables front and rear cylinders?

[Unbalanced]

What type of dyno is it ... the numbers might not be far off for a super flow dyno for instance.
What gear was the dyno done in 4th gear?

[ob1]

Thanks Don and Unbalanced for your responses. Went out to the garage to flashlight around after a 70 mile after dyno ride and noticed a burnt smell coming from the bike. upon observation i noticed oil tossing and wet spots around what appeared to be both Jugs. Imagine that. needless to say, i am beyond words with my dealer. was down 16 days earlier this month, now back to the stealer.

The dyno was performed on a winpep 7 dynojet. smoothing was 5, 5th gear runs, emps 74-84 degrees 19-30% humidity, sae 1.00 and 1.01, all i was handed was the before and after sheet with the corrected afr.

The bike was much smoother(although lacking power) and more responsive at lows rpm's. although there was noticeable vibration throughout idle a few times at a red light.

i will be visiting the owner of the dealership tomorrow to share concerns

[Unbalanced]

OB,
Sorry that really stinks, good luck dealing with the dealer,  hope they make it right without any hassles.

While there you might want to get a leak down test and a compression test to know what you have.  dont forget to disengage the compression releases.

[HUBBARD]

Harry,

Are those numbers in line with the Mod's?  Later--HUBBARD

[Unbalanced]

Hubbard,


Only thing I saw on this one that is a bit of a change is the cam andrews54 and the pipe.
The 110's in stock form put out roughly 105 tq - 110 tq and 84-95 hp given the day and the dyno.    I would expect with this combination this bike should produce on a dynojet somewhere in the neighborhood of 110 tq - 116 and 95-104 hp.  That seems to be the ranges with cam / pipes / open air and a good tune.

[ob1]

Just back from the other HD shop in southern illinois (40 miles) up the rode and dropped her off there. There guys agreed with the majority opinions on what it should be power wise and are going exploring. They were stumped by the results. She had less pulling power and more oil leaks then yesterday. i never called the dealer to complain who did all the work to this point. figured i'd get it done right and bring in the new sheets when she is finally right and then open up pandora's box with them.

Thanks again,will keep you posted

[ob1]

Got a call from the dealer and was given the results of the compression and leakdown test.

Front Jug 90 p.s.i. and 20% leakdown
Rear jug 100 p.s.i and 18% leakdown

I was told the these numbers are low and that they would tear it down and check the seating on the heads and go from there in fixing a jug leak and going through the motor. I am happy to this point in getting straight talk from these guys.

What should the proper p.s.i. and expected leakdown % be for these motor's?

Thanks again

Tim

[HD Street Performance]

200-210psi compression releases disconnected throttle wide open.

[sadunbar]

Got a call from the dealer and was given the results of the compression and leakdown test.

Front Jug 90 p.s.i. and 20% leakdown
Rear jug 100 p.s.i and 18% leakdown

I was told the these numbers are low and that they would tear it down and check the seating on the heads and go from there in fixing a jug leak and going through the motor. I am happy to this point in getting straight talk from these guys.

What should the proper p.s.i. and expected leakdown % be for these motor's?

Thanks again

Tim

Less than 5% leakdown on a new build...

Approx. 200 psi compression...

[fix it myself]

hate to here your having problems like that, when i talked to you the other day i guess you had not found the leaks yet.i hope this is not the kind of problems i will have, since we are in the same neighborhood.at least you are getting some action out of them.maybe both our bikes will be done by this spring,if it wasn't for warranty it would never get touched there.seems we are at there mercy for now anyway.                          did you have any head work done ?                                                                    are you running stock valve springs?       what type brand of headgasket.                                                    also what was the runout specks on the new bottom end before the install, was the original cam plate used or did they install a new one along with a new oil pump? how much side play did your rocker arms have? did you upgrade the left case bearing to a timkem? were the jugs bored 10 over?

[HDDOCFL]

I am at sea level and get  216 frt and 215 rear.  warm engine.  Doc

[ob1]

Thanks again for the help and insight. Talked to the dealer today and was told that they were in the jugs and seen the the new rings were installed wrong and that the motor was screwed from day1 after rebuild. I guess the ring gaps were all lined up in a row instead of staggered and that cause's a loss in cylinder compression, they r awaiting approval and will get it right this week along with new heads.

[ob1]

Talked to the dealer today and they contacted the folks at extended service and it appears that the former dealer never filed a claim to have the original work done a few weeks ago.? The people from extended have no records to go by on the head, rods, and flywheel replacement so they are sending out an investigator to approve the work being done now(that was supposta be done, and now messed up) a few weeks ago.

Guess the former dealer might have some explaining to do.

I am getting everything documented so when i finally walk into the former dealer and ask for my money back for the rings, tune, and anything they did on an improperly rebuilt motor, that i hope that i have no problems in securing.

Everything is torn down and the jugs still look good. they plan on showing the investigator the improperly installed rings, poor valve seating, the compression and leakdown results in support of.

Will keep u posted..... eager to get er done and for the trip to the former dealer for the stuttering episode......